winframework / winphp

www/vendor/PHPMailer/PHPMailer/SMTP.php

Indentation +1272 added lines, -1272 removed lines

@@ -29,621 +29,621 @@ 
  */
 class SMTP
 {
-    /**
-     * The PHPMailer SMTP version number.
-     *
-     * @var string
-     */
-    const VERSION = '6.0.1';
-
-    /**
-     * SMTP line break constant.
-     *
-     * @var string
-     */
-    const LE = "\r\n";
-
-    /**
-     * The SMTP port to use if one is not specified.
-     *
-     * @var int
-     */
-    const DEFAULT_PORT = 25;
-
-    /**
-     * The maximum line length allowed by RFC 2822 section 2.1.1.
-     *
-     * @var int
-     */
-    const MAX_LINE_LENGTH = 998;
-
-    /**
-     * Debug level for no output.
-     */
-    const DEBUG_OFF = 0;
-
-    /**
-     * Debug level to show client -> server messages.
-     */
-    const DEBUG_CLIENT = 1;
-
-    /**
-     * Debug level to show client -> server and server -> client messages.
-     */
-    const DEBUG_SERVER = 2;
-
-    /**
-     * Debug level to show connection status, client -> server and server -> client messages.
-     */
-    const DEBUG_CONNECTION = 3;
-
-    /**
-     * Debug level to show all messages.
-     */
-    const DEBUG_LOWLEVEL = 4;
-
-    /**
-     * Debug output level.
-     * Options:
-     * * self::DEBUG_OFF (`0`) No debug output, default
-     * * self::DEBUG_CLIENT (`1`) Client commands
-     * * self::DEBUG_SERVER (`2`) Client commands and server responses
-     * * self::DEBUG_CONNECTION (`3`) As DEBUG_SERVER plus connection status
-     * * self::DEBUG_LOWLEVEL (`4`) Low-level data output, all messages.
-     *
-     * @var int
-     */
-    public $do_debug = self::DEBUG_OFF;
-
-    /**
-     * How to handle debug output.
-     * Options:
-     * * `echo` Output plain-text as-is, appropriate for CLI
-     * * `html` Output escaped, line breaks converted to `<br>`, appropriate for browser output
-     * * `error_log` Output to error log as configured in php.ini
-     * Alternatively, you can provide a callable expecting two params: a message string and the debug level:
-     *
-     * ```php
-     * $smtp->Debugoutput = function($str, $level) {echo "debug level $level; message: $str";};
-     * ```
-     *
-     * Alternatively, you can pass in an instance of a PSR-3 compatible logger, though only `debug`
-     * level output is used:
-     *
-     * ```php
-     * $mail->Debugoutput = new myPsr3Logger;
-     * ```
-     *
-     * @var string|callable|\Psr\Log\LoggerInterface
-     */
-    public $Debugoutput = 'echo';
-
-    /**
-     * Whether to use VERP.
-     *
-     * @see http://en.wikipedia.org/wiki/Variable_envelope_return_path
-     * @see http://www.postfix.org/VERP_README.html Info on VERP
-     *
-     * @var bool
-     */
-    public $do_verp = false;
-
-    /**
-     * The timeout value for connection, in seconds.
-     * Default of 5 minutes (300sec) is from RFC2821 section 4.5.3.2.
-     * This needs to be quite high to function correctly with hosts using greetdelay as an anti-spam measure.
-     *
-     * @see http://tools.ietf.org/html/rfc2821#section-4.5.3.2
-     *
-     * @var int
-     */
-    public $Timeout = 300;
-
-    /**
-     * How long to wait for commands to complete, in seconds.
-     * Default of 5 minutes (300sec) is from RFC2821 section 4.5.3.2.
-     *
-     * @var int
-     */
-    public $Timelimit = 300;
-
-    /**
-     * Patterns to extract an SMTP transaction id from reply to a DATA command.
-     * The first capture group in each regex will be used as the ID.
-     * MS ESMTP returns the message ID, which may not be correct for internal tracking.
-     *
-     * @var string[]
-     */
-    protected $smtp_transaction_id_patterns = [
-        'exim' => '/[0-9]{3} OK id=(.*)/',
-        'sendmail' => '/[0-9]{3} 2.0.0 (.*) Message/',
-        'postfix' => '/[0-9]{3} 2.0.0 Ok: queued as (.*)/',
-        'Microsoft_ESMTP' => '/[0-9]{3} 2.[0-9].0 (.*)@(?:.*) Queued mail for delivery/',
-        'Amazon_SES' => '/[0-9]{3} Ok (.*)/',
-    ];
-
-    /**
-     * The last transaction ID issued in response to a DATA command,
-     * if one was detected.
-     *
-     * @var string|bool|null
-     */
-    protected $last_smtp_transaction_id;
-
-    /**
-     * The socket for the server connection.
-     *
-     * @var ?resource
-     */
-    protected $smtp_conn;
-
-    /**
-     * Error information, if any, for the last SMTP command.
-     *
-     * @var array
-     */
-    protected $error = [
-        'error' => '',
-        'detail' => '',
-        'smtp_code' => '',
-        'smtp_code_ex' => '',
-    ];
-
-    /**
-     * The reply the server sent to us for HELO.
-     * If null, no HELO string has yet been received.
-     *
-     * @var string|null
-     */
-    protected $helo_rply = null;
-
-    /**
-     * The set of SMTP extensions sent in reply to EHLO command.
-     * Indexes of the array are extension names.
-     * Value at index 'HELO' or 'EHLO' (according to command that was sent)
-     * represents the server name. In case of HELO it is the only element of the array.
-     * Other values can be boolean TRUE or an array containing extension options.
-     * If null, no HELO/EHLO string has yet been received.
-     *
-     * @var array|null
-     */
-    protected $server_caps = null;
-
-    /**
-     * The most recent reply received from the server.
-     *
-     * @var string
-     */
-    protected $last_reply = '';
-
-    /**
-     * Output debugging info via a user-selected method.
-     *
-     * @param string $str   Debug string to output
-     * @param int    $level The debug level of this message; see DEBUG_* constants
-     *
-     * @see SMTP::$Debugoutput
-     * @see SMTP::$do_debug
-     */
-    protected function edebug($str, $level = 0)
-    {
-        if ($level > $this->do_debug) {
-            return;
-        }
-        //Is this a PSR-3 logger?
-        if (is_a($this->Debugoutput, 'Psr\Log\LoggerInterface')) {
-            $this->Debugoutput->debug($str);
-
-            return;
-        }
-        //Avoid clash with built-in function names
-        if (!in_array($this->Debugoutput, ['error_log', 'html', 'echo']) and is_callable($this->Debugoutput)) {
-            call_user_func($this->Debugoutput, $str, $level);
-
-            return;
-        }
-        switch ($this->Debugoutput) {
-            case 'error_log':
-                //Don't output, just log
-                error_log($str);
-                break;
-            case 'html':
-                //Cleans up output a bit for a better looking, HTML-safe output
-                echo gmdate('Y-m-d H:i:s'), ' ', htmlentities(
-                    preg_replace('/[\r\n]+/', '', $str),
-                    ENT_QUOTES,
-                    'UTF-8'
-                ), "<br>\n";
-                break;
-            case 'echo':
-            default:
-                //Normalize line breaks
-                $str = preg_replace('/\r\n|\r/ms', "\n", $str);
-                echo gmdate('Y-m-d H:i:s'),
-                "\t",
-                    //Trim trailing space
-                trim(
-                //Indent for readability, except for trailing break
-                    str_replace(
-                        "\n",
-                        "\n                   \t                  ",
-                        trim($str)
-                    )
-                ),
-                "\n";
-        }
-    }
-
-    /**
-     * Connect to an SMTP server.
-     *
-     * @param string $host    SMTP server IP or host name
-     * @param int    $port    The port number to connect to
-     * @param int    $timeout How long to wait for the connection to open
-     * @param array  $options An array of options for stream_context_create()
-     *
-     * @return bool
-     */
-    public function connect($host, $port = null, $timeout = 30, $options = [])
-    {
-        static $streamok;
-        //This is enabled by default since 5.0.0 but some providers disable it
-        //Check this once and cache the result
-        if (null === $streamok) {
-            $streamok = function_exists('stream_socket_client');
-        }
-        // Clear errors to avoid confusion
-        $this->setError('');
-        // Make sure we are __not__ connected
-        if ($this->connected()) {
-            // Already connected, generate error
-            $this->setError('Already connected to a server');
-
-            return false;
-        }
-        if (empty($port)) {
-            $port = self::DEFAULT_PORT;
-        }
-        // Connect to the SMTP server
-        $this->edebug(
-            "Connection: opening to $host:$port, timeout=$timeout, options=" .
-            (count($options) > 0 ? var_export($options, true) : 'array()'),
-            self::DEBUG_CONNECTION
-        );
-        $errno = 0;
-        $errstr = '';
-        if ($streamok) {
-            $socket_context = stream_context_create($options);
-            set_error_handler([$this, 'errorHandler']);
-            $this->smtp_conn = stream_socket_client(
-                $host . ':' . $port,
-                $errno,
-                $errstr,
-                $timeout,
-                STREAM_CLIENT_CONNECT,
-                $socket_context
-            );
-            restore_error_handler();
-        } else {
-            //Fall back to fsockopen which should work in more places, but is missing some features
-            $this->edebug(
-                'Connection: stream_socket_client not available, falling back to fsockopen',
-                self::DEBUG_CONNECTION
-            );
-            set_error_handler([$this, 'errorHandler']);
-            $this->smtp_conn = fsockopen(
-                $host,
-                $port,
-                $errno,
-                $errstr,
-                $timeout
-            );
-            restore_error_handler();
-        }
-        // Verify we connected properly
-        if (!is_resource($this->smtp_conn)) {
-            $this->setError(
-                'Failed to connect to server',
-                '',
-                (string) $errno,
-                (string) $errstr
-            );
-            $this->edebug(
-                'SMTP ERROR: ' . $this->error['error']
-                . ": $errstr ($errno)",
-                self::DEBUG_CLIENT
-            );
-
-            return false;
-        }
-        $this->edebug('Connection: opened', self::DEBUG_CONNECTION);
-        // SMTP server can take longer to respond, give longer timeout for first read
-        // Windows does not have support for this timeout function
-        if (substr(PHP_OS, 0, 3) != 'WIN') {
-            $max = ini_get('max_execution_time');
-            // Don't bother if unlimited
-            if (0 != $max and $timeout > $max) {
-                @set_time_limit($timeout);
-            }
-            stream_set_timeout($this->smtp_conn, $timeout, 0);
-        }
-        // Get any announcement
-        $announce = $this->get_lines();
-        $this->edebug('SERVER -> CLIENT: ' . $announce, self::DEBUG_SERVER);
-
-        return true;
-    }
-
-    /**
-     * Initiate a TLS (encrypted) session.
-     *
-     * @return bool
-     */
-    public function startTLS()
-    {
-        if (!$this->sendCommand('STARTTLS', 'STARTTLS', 220)) {
-            return false;
-        }
-
-        //Allow the best TLS version(s) we can
-        $crypto_method = STREAM_CRYPTO_METHOD_TLS_CLIENT;
-
-        //PHP 5.6.7 dropped inclusion of TLS 1.1 and 1.2 in STREAM_CRYPTO_METHOD_TLS_CLIENT
-        //so add them back in manually if we can
-        if (defined('STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT')) {
-            $crypto_method |= STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT;
-            $crypto_method |= STREAM_CRYPTO_METHOD_TLSv1_1_CLIENT;
-        }
-
-        // Begin encrypted connection
-        set_error_handler([$this, 'errorHandler']);
-        $crypto_ok = stream_socket_enable_crypto(
-            $this->smtp_conn,
-            true,
-            $crypto_method
-        );
-        restore_error_handler();
-
-        return (bool) $crypto_ok;
-    }
-
-    /**
-     * Perform SMTP Login.
-     * Must be run after hello().
-     *
-     * @see    hello()
-     *
-     * @param string $username The user name
-     * @param string $password The password
-     * @param string $authtype The auth type (CRAM-MD5, PLAIN, LOGIN, XOAUTH2)
-     * @param OAuth  $OAuth    An optional OAuth instance for XOAUTH2 Login
-     *
-     * @return bool True if successfully authenticated
-     */
-    public function authenticate(
-        $username,
-        $password,
-        $authtype = null,
-        $OAuth = null
-    ) {
-        if (!$this->server_caps) {
-            $this->setError('Login is not allowed before HELO/EHLO');
-
-            return false;
-        }
-
-        if (array_key_exists('EHLO', $this->server_caps)) {
-            // SMTP extensions are available; try to find a proper Login method
-            if (!array_key_exists('AUTH', $this->server_caps)) {
-                $this->setError('Login is not allowed at this stage');
-                // 'at this stage' means that auth may be allowed after the stage changes
-                // e.g. after STARTTLS
-
-                return false;
-            }
-
-            $this->edebug('Auth method requested: ' . ($authtype ? $authtype : 'UNKNOWN'), self::DEBUG_LOWLEVEL);
-            $this->edebug(
-                'Auth methods available on the server: ' . implode(',', $this->server_caps['AUTH']),
-                self::DEBUG_LOWLEVEL
-            );
-
-            //If we have requested a specific auth type, check the server supports it before trying others
-            if (!in_array($authtype, $this->server_caps['AUTH'])) {
-                $this->edebug('Requested auth method not available: ' . $authtype, self::DEBUG_LOWLEVEL);
-                $authtype = null;
-            }
-
-            if (empty($authtype)) {
-                //If no auth mechanism is specified, attempt to use these, in this order
-                //Try CRAM-MD5 first as it's more secure than the others
-                foreach (['CRAM-MD5', 'LOGIN', 'PLAIN', 'XOAUTH2'] as $method) {
-                    if (in_array($method, $this->server_caps['AUTH'])) {
-                        $authtype = $method;
-                        break;
-                    }
-                }
-                if (empty($authtype)) {
-                    $this->setError('No supported Login methods found');
-
-                    return false;
-                }
-                self::edebug('Auth method selected: ' . $authtype, self::DEBUG_LOWLEVEL);
-            }
-
-            if (!in_array($authtype, $this->server_caps['AUTH'])) {
-                $this->setError("The requested Login method \"$authtype\" is not supported by the server");
-
-                return false;
-            }
-        } elseif (empty($authtype)) {
-            $authtype = 'LOGIN';
-        }
-        switch ($authtype) {
-            case 'PLAIN':
-                // Start Login
-                if (!$this->sendCommand('AUTH', 'AUTH PLAIN', 334)) {
-                    return false;
-                }
-                // Send encoded username and password
-                if (!$this->sendCommand(
-                    'User & Password',
-                    base64_encode("\0" . $username . "\0" . $password),
-                    235
-                )
-                ) {
-                    return false;
-                }
-                break;
-            case 'LOGIN':
-                // Start Login
-                if (!$this->sendCommand('AUTH', 'AUTH LOGIN', 334)) {
-                    return false;
-                }
-                if (!$this->sendCommand('Username', base64_encode($username), 334)) {
-                    return false;
-                }
-                if (!$this->sendCommand('Password', base64_encode($password), 235)) {
-                    return false;
-                }
-                break;
-            case 'CRAM-MD5':
-                // Start Login
-                if (!$this->sendCommand('AUTH CRAM-MD5', 'AUTH CRAM-MD5', 334)) {
-                    return false;
-                }
-                // Get the challenge
-                $challenge = base64_decode(substr($this->last_reply, 4));
-
-                // Build the response
-                $response = $username . ' ' . $this->hmac($challenge, $password);
-
-                // send encoded credentials
-                return $this->sendCommand('Username', base64_encode($response), 235);
-            case 'XOAUTH2':
-                //The OAuth instance must be set up prior to requesting auth.
-                if (null === $OAuth) {
-                    return false;
-                }
-                $oauth = $OAuth->getOauth64();
-
-                // Start Login
-                if (!$this->sendCommand('AUTH', 'AUTH XOAUTH2 ' . $oauth, 235)) {
-                    return false;
-                }
-                break;
-            default:
-                $this->setError("Login method \"$authtype\" is not supported");
-
-                return false;
-        }
-
-        return true;
-    }
-
-    /**
-     * Calculate an MD5 HMAC hash.
-     * Works like hash_hmac('md5', $data, $key)
-     * in case that function is not available.
-     *
-     * @param string $data The data to hash
-     * @param string $key  The key to hash with
-     *
-     * @return string
-     */
-    protected function hmac($data, $key)
-    {
-        if (function_exists('hash_hmac')) {
-            return hash_hmac('md5', $data, $key);
-        }
-
-        // The following borrowed from
-        // http://php.net/manual/en/function.mhash.php#27225
-
-        // RFC 2104 HMAC implementation for php.
-        // Creates an md5 HMAC.
-        // Eliminates the need to install mhash to compute a HMAC
-        // by Lance Rushing
-
-        $bytelen = 64; // byte length for md5
-        if (strlen($key) > $bytelen) {
-            $key = pack('H*', md5($key));
-        }
-        $key = str_pad($key, $bytelen, chr(0x00));
-        $ipad = str_pad('', $bytelen, chr(0x36));
-        $opad = str_pad('', $bytelen, chr(0x5c));
-        $k_ipad = $key ^ $ipad;
-        $k_opad = $key ^ $opad;
-
-        return md5($k_opad . pack('H*', md5($k_ipad . $data)));
-    }
-
-    /**
-     * Check connection state.
-     *
-     * @return bool True if connected
-     */
-    public function connected()
-    {
-        if (is_resource($this->smtp_conn)) {
-            $sock_status = stream_get_meta_data($this->smtp_conn);
-            if ($sock_status['eof']) {
-                // The socket is valid but we are not connected
-                $this->edebug(
-                    'SMTP NOTICE: EOF caught while checking if connected',
-                    self::DEBUG_CLIENT
-                );
-                $this->close();
-
-                return false;
-            }
-
-            return true; // everything looks good
-        }
-
-        return false;
-    }
-
-    /**
-     * Close the socket and clean up the state of the class.
-     * Don't use this function without first trying to use QUIT.
-     *
-     * @see quit()
-     */
-    public function close()
-    {
-        $this->setError('');
-        $this->server_caps = null;
-        $this->helo_rply = null;
-        if (is_resource($this->smtp_conn)) {
-            // close the connection and cleanup
-            fclose($this->smtp_conn);
-            $this->smtp_conn = null; //Makes for cleaner serialization
-            $this->edebug('Connection: closed', self::DEBUG_CONNECTION);
-        }
-    }
-
-    /**
-     * Send an SMTP DATA command.
-     * Issues a data command and sends the msg_data to the server,
-     * finializing the mail transaction. $msg_data is the message
-     * that is to be send with the headers. Each header needs to be
-     * on a single line followed by a <CRLF> with the message headers
-     * and the message body being separated by an additional <CRLF>.
-     * Implements RFC 821: DATA <CRLF>.
-     *
-     * @param string $msg_data Message data to send
-     *
-     * @return bool
-     */
-    public function data($msg_data)
-    {
-        //This will use the standard timelimit
-        if (!$this->sendCommand('DATA', 'DATA', 354)) {
-            return false;
-        }
-
-        /* The server is ready to accept data!
+	/**
+	 * The PHPMailer SMTP version number.
+	 *
+	 * @var string
+	 */
+	const VERSION = '6.0.1';
+
+	/**
+	 * SMTP line break constant.
+	 *
+	 * @var string
+	 */
+	const LE = "\r\n";
+
+	/**
+	 * The SMTP port to use if one is not specified.
+	 *
+	 * @var int
+	 */
+	const DEFAULT_PORT = 25;
+
+	/**
+	 * The maximum line length allowed by RFC 2822 section 2.1.1.
+	 *
+	 * @var int
+	 */
+	const MAX_LINE_LENGTH = 998;
+
+	/**
+	 * Debug level for no output.
+	 */
+	const DEBUG_OFF = 0;
+
+	/**
+	 * Debug level to show client -> server messages.
+	 */
+	const DEBUG_CLIENT = 1;
+
+	/**
+	 * Debug level to show client -> server and server -> client messages.
+	 */
+	const DEBUG_SERVER = 2;
+
+	/**
+	 * Debug level to show connection status, client -> server and server -> client messages.
+	 */
+	const DEBUG_CONNECTION = 3;
+
+	/**
+	 * Debug level to show all messages.
+	 */
+	const DEBUG_LOWLEVEL = 4;
+
+	/**
+	 * Debug output level.
+	 * Options:
+	 * * self::DEBUG_OFF (`0`) No debug output, default
+	 * * self::DEBUG_CLIENT (`1`) Client commands
+	 * * self::DEBUG_SERVER (`2`) Client commands and server responses
+	 * * self::DEBUG_CONNECTION (`3`) As DEBUG_SERVER plus connection status
+	 * * self::DEBUG_LOWLEVEL (`4`) Low-level data output, all messages.
+	 *
+	 * @var int
+	 */
+	public $do_debug = self::DEBUG_OFF;
+
+	/**
+	 * How to handle debug output.
+	 * Options:
+	 * * `echo` Output plain-text as-is, appropriate for CLI
+	 * * `html` Output escaped, line breaks converted to `<br>`, appropriate for browser output
+	 * * `error_log` Output to error log as configured in php.ini
+	 * Alternatively, you can provide a callable expecting two params: a message string and the debug level:
+	 *
+	 * ```php
+	 * $smtp->Debugoutput = function($str, $level) {echo "debug level $level; message: $str";};
+	 * ```
+	 *
+	 * Alternatively, you can pass in an instance of a PSR-3 compatible logger, though only `debug`
+	 * level output is used:
+	 *
+	 * ```php
+	 * $mail->Debugoutput = new myPsr3Logger;
+	 * ```
+	 *
+	 * @var string|callable|\Psr\Log\LoggerInterface
+	 */
+	public $Debugoutput = 'echo';
+
+	/**
+	 * Whether to use VERP.
+	 *
+	 * @see http://en.wikipedia.org/wiki/Variable_envelope_return_path
+	 * @see http://www.postfix.org/VERP_README.html Info on VERP
+	 *
+	 * @var bool
+	 */
+	public $do_verp = false;
+
+	/**
+	 * The timeout value for connection, in seconds.
+	 * Default of 5 minutes (300sec) is from RFC2821 section 4.5.3.2.
+	 * This needs to be quite high to function correctly with hosts using greetdelay as an anti-spam measure.
+	 *
+	 * @see http://tools.ietf.org/html/rfc2821#section-4.5.3.2
+	 *
+	 * @var int
+	 */
+	public $Timeout = 300;
+
+	/**
+	 * How long to wait for commands to complete, in seconds.
+	 * Default of 5 minutes (300sec) is from RFC2821 section 4.5.3.2.
+	 *
+	 * @var int
+	 */
+	public $Timelimit = 300;
+
+	/**
+	 * Patterns to extract an SMTP transaction id from reply to a DATA command.
+	 * The first capture group in each regex will be used as the ID.
+	 * MS ESMTP returns the message ID, which may not be correct for internal tracking.
+	 *
+	 * @var string[]
+	 */
+	protected $smtp_transaction_id_patterns = [
+		'exim' => '/[0-9]{3} OK id=(.*)/',
+		'sendmail' => '/[0-9]{3} 2.0.0 (.*) Message/',
+		'postfix' => '/[0-9]{3} 2.0.0 Ok: queued as (.*)/',
+		'Microsoft_ESMTP' => '/[0-9]{3} 2.[0-9].0 (.*)@(?:.*) Queued mail for delivery/',
+		'Amazon_SES' => '/[0-9]{3} Ok (.*)/',
+	];
+
+	/**
+	 * The last transaction ID issued in response to a DATA command,
+	 * if one was detected.
+	 *
+	 * @var string|bool|null
+	 */
+	protected $last_smtp_transaction_id;
+
+	/**
+	 * The socket for the server connection.
+	 *
+	 * @var ?resource
+	 */
+	protected $smtp_conn;
+
+	/**
+	 * Error information, if any, for the last SMTP command.
+	 *
+	 * @var array
+	 */
+	protected $error = [
+		'error' => '',
+		'detail' => '',
+		'smtp_code' => '',
+		'smtp_code_ex' => '',
+	];
+
+	/**
+	 * The reply the server sent to us for HELO.
+	 * If null, no HELO string has yet been received.
+	 *
+	 * @var string|null
+	 */
+	protected $helo_rply = null;
+
+	/**
+	 * The set of SMTP extensions sent in reply to EHLO command.
+	 * Indexes of the array are extension names.
+	 * Value at index 'HELO' or 'EHLO' (according to command that was sent)
+	 * represents the server name. In case of HELO it is the only element of the array.
+	 * Other values can be boolean TRUE or an array containing extension options.
+	 * If null, no HELO/EHLO string has yet been received.
+	 *
+	 * @var array|null
+	 */
+	protected $server_caps = null;
+
+	/**
+	 * The most recent reply received from the server.
+	 *
+	 * @var string
+	 */
+	protected $last_reply = '';
+
+	/**
+	 * Output debugging info via a user-selected method.
+	 *
+	 * @param string $str   Debug string to output
+	 * @param int    $level The debug level of this message; see DEBUG_* constants
+	 *
+	 * @see SMTP::$Debugoutput
+	 * @see SMTP::$do_debug
+	 */
+	protected function edebug($str, $level = 0)
+	{
+		if ($level > $this->do_debug) {
+			return;
+		}
+		//Is this a PSR-3 logger?
+		if (is_a($this->Debugoutput, 'Psr\Log\LoggerInterface')) {
+			$this->Debugoutput->debug($str);
+
+			return;
+		}
+		//Avoid clash with built-in function names
+		if (!in_array($this->Debugoutput, ['error_log', 'html', 'echo']) and is_callable($this->Debugoutput)) {
+			call_user_func($this->Debugoutput, $str, $level);
+
+			return;
+		}
+		switch ($this->Debugoutput) {
+			case 'error_log':
+				//Don't output, just log
+				error_log($str);
+				break;
+			case 'html':
+				//Cleans up output a bit for a better looking, HTML-safe output
+				echo gmdate('Y-m-d H:i:s'), ' ', htmlentities(
+					preg_replace('/[\r\n]+/', '', $str),
+					ENT_QUOTES,
+					'UTF-8'
+				), "<br>\n";
+				break;
+			case 'echo':
+			default:
+				//Normalize line breaks
+				$str = preg_replace('/\r\n|\r/ms', "\n", $str);
+				echo gmdate('Y-m-d H:i:s'),
+				"\t",
+					//Trim trailing space
+				trim(
+				//Indent for readability, except for trailing break
+					str_replace(
+						"\n",
+						"\n                   \t                  ",
+						trim($str)
+					)
+				),
+				"\n";
+		}
+	}
+
+	/**
+	 * Connect to an SMTP server.
+	 *
+	 * @param string $host    SMTP server IP or host name
+	 * @param int    $port    The port number to connect to
+	 * @param int    $timeout How long to wait for the connection to open
+	 * @param array  $options An array of options for stream_context_create()
+	 *
+	 * @return bool
+	 */
+	public function connect($host, $port = null, $timeout = 30, $options = [])
+	{
+		static $streamok;
+		//This is enabled by default since 5.0.0 but some providers disable it
+		//Check this once and cache the result
+		if (null === $streamok) {
+			$streamok = function_exists('stream_socket_client');
+		}
+		// Clear errors to avoid confusion
+		$this->setError('');
+		// Make sure we are __not__ connected
+		if ($this->connected()) {
+			// Already connected, generate error
+			$this->setError('Already connected to a server');
+
+			return false;
+		}
+		if (empty($port)) {
+			$port = self::DEFAULT_PORT;
+		}
+		// Connect to the SMTP server
+		$this->edebug(
+			"Connection: opening to $host:$port, timeout=$timeout, options=" .
+			(count($options) > 0 ? var_export($options, true) : 'array()'),
+			self::DEBUG_CONNECTION
+		);
+		$errno = 0;
+		$errstr = '';
+		if ($streamok) {
+			$socket_context = stream_context_create($options);
+			set_error_handler([$this, 'errorHandler']);
+			$this->smtp_conn = stream_socket_client(
+				$host . ':' . $port,
+				$errno,
+				$errstr,
+				$timeout,
+				STREAM_CLIENT_CONNECT,
+				$socket_context
+			);
+			restore_error_handler();
+		} else {
+			//Fall back to fsockopen which should work in more places, but is missing some features
+			$this->edebug(
+				'Connection: stream_socket_client not available, falling back to fsockopen',
+				self::DEBUG_CONNECTION
+			);
+			set_error_handler([$this, 'errorHandler']);
+			$this->smtp_conn = fsockopen(
+				$host,
+				$port,
+				$errno,
+				$errstr,
+				$timeout
+			);
+			restore_error_handler();
+		}
+		// Verify we connected properly
+		if (!is_resource($this->smtp_conn)) {
+			$this->setError(
+				'Failed to connect to server',
+				'',
+				(string) $errno,
+				(string) $errstr
+			);
+			$this->edebug(
+				'SMTP ERROR: ' . $this->error['error']
+				. ": $errstr ($errno)",
+				self::DEBUG_CLIENT
+			);
+
+			return false;
+		}
+		$this->edebug('Connection: opened', self::DEBUG_CONNECTION);
+		// SMTP server can take longer to respond, give longer timeout for first read
+		// Windows does not have support for this timeout function
+		if (substr(PHP_OS, 0, 3) != 'WIN') {
+			$max = ini_get('max_execution_time');
+			// Don't bother if unlimited
+			if (0 != $max and $timeout > $max) {
+				@set_time_limit($timeout);
+			}
+			stream_set_timeout($this->smtp_conn, $timeout, 0);
+		}
+		// Get any announcement
+		$announce = $this->get_lines();
+		$this->edebug('SERVER -> CLIENT: ' . $announce, self::DEBUG_SERVER);
+
+		return true;
+	}
+
+	/**
+	 * Initiate a TLS (encrypted) session.
+	 *
+	 * @return bool
+	 */
+	public function startTLS()
+	{
+		if (!$this->sendCommand('STARTTLS', 'STARTTLS', 220)) {
+			return false;
+		}
+
+		//Allow the best TLS version(s) we can
+		$crypto_method = STREAM_CRYPTO_METHOD_TLS_CLIENT;
+
+		//PHP 5.6.7 dropped inclusion of TLS 1.1 and 1.2 in STREAM_CRYPTO_METHOD_TLS_CLIENT
+		//so add them back in manually if we can
+		if (defined('STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT')) {
+			$crypto_method |= STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT;
+			$crypto_method |= STREAM_CRYPTO_METHOD_TLSv1_1_CLIENT;
+		}
+
+		// Begin encrypted connection
+		set_error_handler([$this, 'errorHandler']);
+		$crypto_ok = stream_socket_enable_crypto(
+			$this->smtp_conn,
+			true,
+			$crypto_method
+		);
+		restore_error_handler();
+
+		return (bool) $crypto_ok;
+	}
+
+	/**
+	 * Perform SMTP Login.
+	 * Must be run after hello().
+	 *
+	 * @see    hello()
+	 *
+	 * @param string $username The user name
+	 * @param string $password The password
+	 * @param string $authtype The auth type (CRAM-MD5, PLAIN, LOGIN, XOAUTH2)
+	 * @param OAuth  $OAuth    An optional OAuth instance for XOAUTH2 Login
+	 *
+	 * @return bool True if successfully authenticated
+	 */
+	public function authenticate(
+		$username,
+		$password,
+		$authtype = null,
+		$OAuth = null
+	) {
+		if (!$this->server_caps) {
+			$this->setError('Login is not allowed before HELO/EHLO');
+
+			return false;
+		}
+
+		if (array_key_exists('EHLO', $this->server_caps)) {
+			// SMTP extensions are available; try to find a proper Login method
+			if (!array_key_exists('AUTH', $this->server_caps)) {
+				$this->setError('Login is not allowed at this stage');
+				// 'at this stage' means that auth may be allowed after the stage changes
+				// e.g. after STARTTLS
+
+				return false;
+			}
+
+			$this->edebug('Auth method requested: ' . ($authtype ? $authtype : 'UNKNOWN'), self::DEBUG_LOWLEVEL);
+			$this->edebug(
+				'Auth methods available on the server: ' . implode(',', $this->server_caps['AUTH']),
+				self::DEBUG_LOWLEVEL
+			);
+
+			//If we have requested a specific auth type, check the server supports it before trying others
+			if (!in_array($authtype, $this->server_caps['AUTH'])) {
+				$this->edebug('Requested auth method not available: ' . $authtype, self::DEBUG_LOWLEVEL);
+				$authtype = null;
+			}
+
+			if (empty($authtype)) {
+				//If no auth mechanism is specified, attempt to use these, in this order
+				//Try CRAM-MD5 first as it's more secure than the others
+				foreach (['CRAM-MD5', 'LOGIN', 'PLAIN', 'XOAUTH2'] as $method) {
+					if (in_array($method, $this->server_caps['AUTH'])) {
+						$authtype = $method;
+						break;
+					}
+				}
+				if (empty($authtype)) {
+					$this->setError('No supported Login methods found');
+
+					return false;
+				}
+				self::edebug('Auth method selected: ' . $authtype, self::DEBUG_LOWLEVEL);
+			}
+
+			if (!in_array($authtype, $this->server_caps['AUTH'])) {
+				$this->setError("The requested Login method \"$authtype\" is not supported by the server");
+
+				return false;
+			}
+		} elseif (empty($authtype)) {
+			$authtype = 'LOGIN';
+		}
+		switch ($authtype) {
+			case 'PLAIN':
+				// Start Login
+				if (!$this->sendCommand('AUTH', 'AUTH PLAIN', 334)) {
+					return false;
+				}
+				// Send encoded username and password
+				if (!$this->sendCommand(
+					'User & Password',
+					base64_encode("\0" . $username . "\0" . $password),
+					235
+				)
+				) {
+					return false;
+				}
+				break;
+			case 'LOGIN':
+				// Start Login
+				if (!$this->sendCommand('AUTH', 'AUTH LOGIN', 334)) {
+					return false;
+				}
+				if (!$this->sendCommand('Username', base64_encode($username), 334)) {
+					return false;
+				}
+				if (!$this->sendCommand('Password', base64_encode($password), 235)) {
+					return false;
+				}
+				break;
+			case 'CRAM-MD5':
+				// Start Login
+				if (!$this->sendCommand('AUTH CRAM-MD5', 'AUTH CRAM-MD5', 334)) {
+					return false;
+				}
+				// Get the challenge
+				$challenge = base64_decode(substr($this->last_reply, 4));
+
+				// Build the response
+				$response = $username . ' ' . $this->hmac($challenge, $password);
+
+				// send encoded credentials
+				return $this->sendCommand('Username', base64_encode($response), 235);
+			case 'XOAUTH2':
+				//The OAuth instance must be set up prior to requesting auth.
+				if (null === $OAuth) {
+					return false;
+				}
+				$oauth = $OAuth->getOauth64();
+
+				// Start Login
+				if (!$this->sendCommand('AUTH', 'AUTH XOAUTH2 ' . $oauth, 235)) {
+					return false;
+				}
+				break;
+			default:
+				$this->setError("Login method \"$authtype\" is not supported");
+
+				return false;
+		}
+
+		return true;
+	}
+
+	/**
+	 * Calculate an MD5 HMAC hash.
+	 * Works like hash_hmac('md5', $data, $key)
+	 * in case that function is not available.
+	 *
+	 * @param string $data The data to hash
+	 * @param string $key  The key to hash with
+	 *
+	 * @return string
+	 */
+	protected function hmac($data, $key)
+	{
+		if (function_exists('hash_hmac')) {
+			return hash_hmac('md5', $data, $key);
+		}
+
+		// The following borrowed from
+		// http://php.net/manual/en/function.mhash.php#27225
+
+		// RFC 2104 HMAC implementation for php.
+		// Creates an md5 HMAC.
+		// Eliminates the need to install mhash to compute a HMAC
+		// by Lance Rushing
+
+		$bytelen = 64; // byte length for md5
+		if (strlen($key) > $bytelen) {
+			$key = pack('H*', md5($key));
+		}
+		$key = str_pad($key, $bytelen, chr(0x00));
+		$ipad = str_pad('', $bytelen, chr(0x36));
+		$opad = str_pad('', $bytelen, chr(0x5c));
+		$k_ipad = $key ^ $ipad;
+		$k_opad = $key ^ $opad;
+
+		return md5($k_opad . pack('H*', md5($k_ipad . $data)));
+	}
+
+	/**
+	 * Check connection state.
+	 *
+	 * @return bool True if connected
+	 */
+	public function connected()
+	{
+		if (is_resource($this->smtp_conn)) {
+			$sock_status = stream_get_meta_data($this->smtp_conn);
+			if ($sock_status['eof']) {
+				// The socket is valid but we are not connected
+				$this->edebug(
+					'SMTP NOTICE: EOF caught while checking if connected',
+					self::DEBUG_CLIENT
+				);
+				$this->close();
+
+				return false;
+			}
+
+			return true; // everything looks good
+		}
+
+		return false;
+	}
+
+	/**
+	 * Close the socket and clean up the state of the class.
+	 * Don't use this function without first trying to use QUIT.
+	 *
+	 * @see quit()
+	 */
+	public function close()
+	{
+		$this->setError('');
+		$this->server_caps = null;
+		$this->helo_rply = null;
+		if (is_resource($this->smtp_conn)) {
+			// close the connection and cleanup
+			fclose($this->smtp_conn);
+			$this->smtp_conn = null; //Makes for cleaner serialization
+			$this->edebug('Connection: closed', self::DEBUG_CONNECTION);
+		}
+	}
+
+	/**
+	 * Send an SMTP DATA command.
+	 * Issues a data command and sends the msg_data to the server,
+	 * finializing the mail transaction. $msg_data is the message
+	 * that is to be send with the headers. Each header needs to be
+	 * on a single line followed by a <CRLF> with the message headers
+	 * and the message body being separated by an additional <CRLF>.
+	 * Implements RFC 821: DATA <CRLF>.
+	 *
+	 * @param string $msg_data Message data to send
+	 *
+	 * @return bool
+	 */
+	public function data($msg_data)
+	{
+		//This will use the standard timelimit
+		if (!$this->sendCommand('DATA', 'DATA', 354)) {
+			return false;
+		}
+
+		/* The server is ready to accept data!
          * According to rfc821 we should not send more than 1000 characters on a single line (including the LE)
          * so we will break the data up into lines by \r and/or \n then if needed we will break each of those into
          * smaller lines to fit within the limit.
@@ -651,666 +651,666 @@ 
          * NOTE: this does not count towards line-length limit.
          */
 
-        // Normalize line breaks before exploding
-        $lines = explode("\n", str_replace(["\r\n", "\r"], "\n", $msg_data));
+		// Normalize line breaks before exploding
+		$lines = explode("\n", str_replace(["\r\n", "\r"], "\n", $msg_data));
 
-        /* To distinguish between a complete RFC822 message and a plain message body, we check if the first field
+		/* To distinguish between a complete RFC822 message and a plain message body, we check if the first field
          * of the first line (':' separated) does not contain a space then it _should_ be a header and we will
          * process all lines before a blank line as headers.
          */
 
-        $field = substr($lines[0], 0, strpos($lines[0], ':'));
-        $in_headers = false;
-        if (!empty($field) and strpos($field, ' ') === false) {
-            $in_headers = true;
-        }
-
-        foreach ($lines as $line) {
-            $lines_out = [];
-            if ($in_headers and $line == '') {
-                $in_headers = false;
-            }
-            //Break this line up into several smaller lines if it's too long
-            //Micro-optimisation: isset($str[$len]) is faster than (strlen($str) > $len),
-            while (isset($line[self::MAX_LINE_LENGTH])) {
-                //Working backwards, try to find a space within the last MAX_LINE_LENGTH chars of the line to break on
-                //so as to avoid breaking in the middle of a word
-                $pos = strrpos(substr($line, 0, self::MAX_LINE_LENGTH), ' ');
-                //Deliberately matches both false and 0
-                if (!$pos) {
-                    //No nice break found, add a hard break
-                    $pos = self::MAX_LINE_LENGTH - 1;
-                    $lines_out[] = substr($line, 0, $pos);
-                    $line = substr($line, $pos);
-                } else {
-                    //Break at the found point
-                    $lines_out[] = substr($line, 0, $pos);
-                    //Move along by the amount we dealt with
-                    $line = substr($line, $pos + 1);
-                }
-                //If processing headers add a LWSP-char to the front of new line RFC822 section 3.1.1
-                if ($in_headers) {
-                    $line = "\t" . $line;
-                }
-            }
-            $lines_out[] = $line;
-
-            //Send the lines to the server
-            foreach ($lines_out as $line_out) {
-                //RFC2821 section 4.5.2
-                if (!empty($line_out) and $line_out[0] == '.') {
-                    $line_out = '.' . $line_out;
-                }
-                $this->client_send($line_out . static::LE);
-            }
-        }
-
-        //Message data has been sent, complete the command
-        //Increase timelimit for end of DATA command
-        $savetimelimit = $this->Timelimit;
-        $this->Timelimit = $this->Timelimit * 2;
-        $result = $this->sendCommand('DATA END', '.', 250);
-        $this->recordLastTransactionID();
-        //Restore timelimit
-        $this->Timelimit = $savetimelimit;
-
-        return $result;
-    }
-
-    /**
-     * Send an SMTP HELO or EHLO command.
-     * Used to identify the sending server to the receiving server.
-     * This makes sure that client and server are in a known state.
-     * Implements RFC 821: HELO <SP> <domain> <CRLF>
-     * and RFC 2821 EHLO.
-     *
-     * @param string $host The host name or IP to connect to
-     *
-     * @return bool
-     */
-    public function hello($host = '')
-    {
-        //Try extended hello first (RFC 2821)
-        return (bool) ($this->sendHello('EHLO', $host) or $this->sendHello('HELO', $host));
-    }
-
-    /**
-     * Send an SMTP HELO or EHLO command.
-     * Low-level implementation used by hello().
-     *
-     * @param string $hello The HELO string
-     * @param string $host  The hostname to say we are
-     *
-     * @return bool
-     *
-     * @see    hello()
-     */
-    protected function sendHello($hello, $host)
-    {
-        $noerror = $this->sendCommand($hello, $hello . ' ' . $host, 250);
-        $this->helo_rply = $this->last_reply;
-        if ($noerror) {
-            $this->parseHelloFields($hello);
-        } else {
-            $this->server_caps = null;
-        }
-
-        return $noerror;
-    }
-
-    /**
-     * Parse a reply to HELO/EHLO command to discover server extensions.
-     * In case of HELO, the only parameter that can be discovered is a server name.
-     *
-     * @param string $type `HELO` or `EHLO`
-     */
-    protected function parseHelloFields($type)
-    {
-        $this->server_caps = [];
-        $lines = explode("\n", $this->helo_rply);
-
-        foreach ($lines as $n => $s) {
-            //First 4 chars contain response code followed by - or space
-            $s = trim(substr($s, 4));
-            if (empty($s)) {
-                continue;
-            }
-            $fields = explode(' ', $s);
-            if (!empty($fields)) {
-                if (!$n) {
-                    $name = $type;
-                    $fields = $fields[0];
-                } else {
-                    $name = array_shift($fields);
-                    switch ($name) {
-                        case 'SIZE':
-                            $fields = ($fields ? $fields[0] : 0);
-                            break;
-                        case 'AUTH':
-                            if (!is_array($fields)) {
-                                $fields = [];
-                            }
-                            break;
-                        default:
-                            $fields = true;
-                    }
-                }
-                $this->server_caps[$name] = $fields;
-            }
-        }
-    }
-
-    /**
-     * Send an SMTP MAIL command.
-     * Starts a mail transaction from the email address specified in
-     * $from. Returns true if successful or false otherwise. If True
-     * the mail transaction is started and then one or more recipient
-     * commands may be called followed by a data command.
-     * Implements RFC 821: MAIL <SP> FROM:<reverse-path> <CRLF>.
-     *
-     * @param string $from Source address of this message
-     *
-     * @return bool
-     */
-    public function mail($from)
-    {
-        $useVerp = ($this->do_verp ? ' XVERP' : '');
-
-        return $this->sendCommand(
-            'MAIL FROM',
-            'MAIL FROM:<' . $from . '>' . $useVerp,
-            250
-        );
-    }
-
-    /**
-     * Send an SMTP QUIT command.
-     * Closes the socket if there is no error or the $close_on_error argument is true.
-     * Implements from RFC 821: QUIT <CRLF>.
-     *
-     * @param bool $close_on_error Should the connection close if an error occurs?
-     *
-     * @return bool
-     */
-    public function quit($close_on_error = true)
-    {
-        $noerror = $this->sendCommand('QUIT', 'QUIT', 221);
-        $err = $this->error; //Save any error
-        if ($noerror or $close_on_error) {
-            $this->close();
-            $this->error = $err; //Restore any error from the quit command
-        }
-
-        return $noerror;
-    }
-
-    /**
-     * Send an SMTP RCPT command.
-     * Sets the TO argument to $toaddr.
-     * Returns true if the recipient was accepted false if it was rejected.
-     * Implements from RFC 821: RCPT <SP> TO:<forward-path> <CRLF>.
-     *
-     * @param string $address The address the message is being sent to
-     *
-     * @return bool
-     */
-    public function recipient($address)
-    {
-        return $this->sendCommand(
-            'RCPT TO',
-            'RCPT TO:<' . $address . '>',
-            [250, 251]
-        );
-    }
-
-    /**
-     * Send an SMTP RSET command.
-     * Abort any transaction that is currently in progress.
-     * Implements RFC 821: RSET <CRLF>.
-     *
-     * @return bool True on success
-     */
-    public function reset()
-    {
-        return $this->sendCommand('RSET', 'RSET', 250);
-    }
-
-    /**
-     * Send a command to an SMTP server and check its return code.
-     *
-     * @param string    $command       The command name - not sent to the server
-     * @param string    $commandstring The actual command to send
-     * @param int|array $expect        One or more expected integer success codes
-     *
-     * @return bool True on success
-     */
-    protected function sendCommand($command, $commandstring, $expect)
-    {
-        if (!$this->connected()) {
-            $this->setError("Called $command without being connected");
-
-            return false;
-        }
-        //Reject line breaks in all commands
-        if (strpos($commandstring, "\n") !== false or strpos($commandstring, "\r") !== false) {
-            $this->setError("Command '$command' contained line breaks");
-
-            return false;
-        }
-        $this->client_send($commandstring . static::LE);
-
-        $this->last_reply = $this->get_lines();
-        // Fetch SMTP code and possible error code explanation
-        $matches = [];
-        if (preg_match('/^([0-9]{3})[ -](?:([0-9]\\.[0-9]\\.[0-9]) )?/', $this->last_reply, $matches)) {
-            $code = $matches[1];
-            $code_ex = (count($matches) > 2 ? $matches[2] : null);
-            // Cut off error code from each response line
-            $detail = preg_replace(
-                "/{$code}[ -]" .
-                ($code_ex ? str_replace('.', '\\.', $code_ex) . ' ' : '') . '/m',
-                '',
-                $this->last_reply
-            );
-        } else {
-            // Fall back to simple parsing if regex fails
-            $code = substr($this->last_reply, 0, 3);
-            $code_ex = null;
-            $detail = substr($this->last_reply, 4);
-        }
-
-        $this->edebug('SERVER -> CLIENT: ' . $this->last_reply, self::DEBUG_SERVER);
-
-        if (!in_array($code, (array) $expect)) {
-            $this->setError(
-                "$command command failed",
-                $detail,
-                $code,
-                $code_ex
-            );
-            $this->edebug(
-                'SMTP ERROR: ' . $this->error['error'] . ': ' . $this->last_reply,
-                self::DEBUG_CLIENT
-            );
-
-            return false;
-        }
-
-        $this->setError('');
-
-        return true;
-    }
-
-    /**
-     * Send an SMTP SAML command.
-     * Starts a mail transaction from the email address specified in $from.
-     * Returns true if successful or false otherwise. If True
-     * the mail transaction is started and then one or more recipient
-     * commands may be called followed by a data command. This command
-     * will send the message to the users terminal if they are logged
-     * in and send them an email.
-     * Implements RFC 821: SAML <SP> FROM:<reverse-path> <CRLF>.
-     *
-     * @param string $from The address the message is from
-     *
-     * @return bool
-     */
-    public function sendAndMail($from)
-    {
-        return $this->sendCommand('SAML', "SAML FROM:$from", 250);
-    }
-
-    /**
-     * Send an SMTP VRFY command.
-     *
-     * @param string $name The name to verify
-     *
-     * @return bool
-     */
-    public function verify($name)
-    {
-        return $this->sendCommand('VRFY', "VRFY $name", [250, 251]);
-    }
-
-    /**
-     * Send an SMTP NOOP command.
-     * Used to keep keep-alives alive, doesn't actually do anything.
-     *
-     * @return bool
-     */
-    public function noop()
-    {
-        return $this->sendCommand('NOOP', 'NOOP', 250);
-    }
-
-    /**
-     * Send an SMTP TURN command.
-     * This is an optional command for SMTP that this class does not support.
-     * This method is here to make the RFC821 Definition complete for this class
-     * and _may_ be implemented in future.
-     * Implements from RFC 821: TURN <CRLF>.
-     *
-     * @return bool
-     */
-    public function turn()
-    {
-        $this->setError('The SMTP TURN command is not implemented');
-        $this->edebug('SMTP NOTICE: ' . $this->error['error'], self::DEBUG_CLIENT);
-
-        return false;
-    }
-
-    /**
-     * Send raw data to the server.
-     *
-     * @param string $data The data to send
-     *
-     * @return int|bool The number of bytes sent to the server or false on error
-     */
-    public function client_send($data)
-    {
-        $this->edebug("CLIENT -> SERVER: $data", self::DEBUG_CLIENT);
-        set_error_handler([$this, 'errorHandler']);
-        $result = fwrite($this->smtp_conn, $data);
-        restore_error_handler();
-
-        return $result;
-    }
-
-    /**
-     * Get the latest error.
-     *
-     * @return array
-     */
-    public function getError()
-    {
-        return $this->error;
-    }
-
-    /**
-     * Get SMTP extensions available on the server.
-     *
-     * @return array|null
-     */
-    public function getServerExtList()
-    {
-        return $this->server_caps;
-    }
-
-    /**
-     * Get metadata about the SMTP server from its HELO/EHLO response.
-     * The method works in three ways, dependent on argument value and current state:
-     *   1. HELO/EHLO has not been sent - returns null and populates $this->error.
-     *   2. HELO has been sent -
-     *     $name == 'HELO': returns server name
-     *     $name == 'EHLO': returns boolean false
-     *     $name == any other string: returns null and populates $this->error
-     *   3. EHLO has been sent -
-     *     $name == 'HELO'|'EHLO': returns the server name
-     *     $name == any other string: if extension $name exists, returns True
-     *       or its options (e.g. AUTH mechanisms supported). Otherwise returns False.
-     *
-     * @param string $name Name of SMTP extension or 'HELO'|'EHLO'
-     *
-     * @return mixed
-     */
-    public function getServerExt($name)
-    {
-        if (!$this->server_caps) {
-            $this->setError('No HELO/EHLO was sent');
-
-            return;
-        }
-
-        if (!array_key_exists($name, $this->server_caps)) {
-            if ('HELO' == $name) {
-                return $this->server_caps['EHLO'];
-            }
-            if ('EHLO' == $name || array_key_exists('EHLO', $this->server_caps)) {
-                return false;
-            }
-            $this->setError('HELO handshake was used; No information about server extensions available');
-
-            return;
-        }
-
-        return $this->server_caps[$name];
-    }
-
-    /**
-     * Get the last reply from the server.
-     *
-     * @return string
-     */
-    public function getLastReply()
-    {
-        return $this->last_reply;
-    }
-
-    /**
-     * Read the SMTP server's response.
-     * Either before eof or socket timeout occurs on the operation.
-     * With SMTP we can tell if we have more lines to read if the
-     * 4th character is '-' symbol. If it is a space then we don't
-     * need to read anything else.
-     *
-     * @return string
-     */
-    protected function get_lines()
-    {
-        // If the connection is bad, give up straight away
-        if (!is_resource($this->smtp_conn)) {
-            return '';
-        }
-        $data = '';
-        $endtime = 0;
-        stream_set_timeout($this->smtp_conn, $this->Timeout);
-        if ($this->Timelimit > 0) {
-            $endtime = time() + $this->Timelimit;
-        }
-        $selR = [$this->smtp_conn];
-        $selW = null;
-        while (is_resource($this->smtp_conn) and !feof($this->smtp_conn)) {
-            //Must pass vars in here as params are by reference
-            if (!stream_select($selR, $selW, $selW, $this->Timelimit)) {
-                $this->edebug(
-                    'SMTP -> get_lines(): timed-out (' . $this->Timeout . ' sec)',
-                    self::DEBUG_LOWLEVEL
-                );
-                break;
-            }
-            //Deliberate noise suppression - errors are handled afterwards
-            $str = @fgets($this->smtp_conn, 515);
-            $this->edebug('SMTP INBOUND: "' . trim($str) . '"', self::DEBUG_LOWLEVEL);
-            $data .= $str;
-            // If response is only 3 chars (not valid, but RFC5321 S4.2 says it must be handled),
-            // or 4th character is a space, we are done reading, break the loop,
-            // string array access is a micro-optimisation over strlen
-            if (!isset($str[3]) or (isset($str[3]) and $str[3] == ' ')) {
-                break;
-            }
-            // Timed-out? Log and break
-            $info = stream_get_meta_data($this->smtp_conn);
-            if ($info['timed_out']) {
-                $this->edebug(
-                    'SMTP -> get_lines(): timed-out (' . $this->Timeout . ' sec)',
-                    self::DEBUG_LOWLEVEL
-                );
-                break;
-            }
-            // Now check if reads took too long
-            if ($endtime and time() > $endtime) {
-                $this->edebug(
-                    'SMTP -> get_lines(): timelimit reached (' .
-                    $this->Timelimit . ' sec)',
-                    self::DEBUG_LOWLEVEL
-                );
-                break;
-            }
-        }
-
-        return $data;
-    }
-
-    /**
-     * Enable or disable VERP address generation.
-     *
-     * @param bool $enabled
-     */
-    public function setVerp($enabled = false)
-    {
-        $this->do_verp = $enabled;
-    }
-
-    /**
-     * Get VERP address generation mode.
-     *
-     * @return bool
-     */
-    public function getVerp()
-    {
-        return $this->do_verp;
-    }
-
-    /**
-     * Set error messages and codes.
-     *
-     * @param string $message      The error message
-     * @param string $detail       Further detail on the error
-     * @param string $smtp_code    An associated SMTP error code
-     * @param string $smtp_code_ex Extended SMTP code
-     */
-    protected function setError($message, $detail = '', $smtp_code = '', $smtp_code_ex = '')
-    {
-        $this->error = [
-            'error' => $message,
-            'detail' => $detail,
-            'smtp_code' => $smtp_code,
-            'smtp_code_ex' => $smtp_code_ex,
-        ];
-    }
-
-    /**
-     * Set debug output method.
-     *
-     * @param string|callable $method The name of the mechanism to use for debugging output, or a callable to handle it
-     */
-    public function setDebugOutput($method = 'echo')
-    {
-        $this->Debugoutput = $method;
-    }
-
-    /**
-     * Get debug output method.
-     *
-     * @return string
-     */
-    public function getDebugOutput()
-    {
-        return $this->Debugoutput;
-    }
-
-    /**
-     * Set debug output level.
-     *
-     * @param int $level
-     */
-    public function setDebugLevel($level = 0)
-    {
-        $this->do_debug = $level;
-    }
-
-    /**
-     * Get debug output level.
-     *
-     * @return int
-     */
-    public function getDebugLevel()
-    {
-        return $this->do_debug;
-    }
-
-    /**
-     * Set SMTP timeout.
-     *
-     * @param int $timeout The timeout duration in seconds
-     */
-    public function setTimeout($timeout = 0)
-    {
-        $this->Timeout = $timeout;
-    }
-
-    /**
-     * Get SMTP timeout.
-     *
-     * @return int
-     */
-    public function getTimeout()
-    {
-        return $this->Timeout;
-    }
-
-    /**
-     * Reports an error number and string.
-     *
-     * @param int    $errno   The error number returned by PHP
-     * @param string $errmsg  The error message returned by PHP
-     * @param string $errfile The file the error occurred in
-     * @param int    $errline The line number the error occurred on
-     */
-    protected function errorHandler($errno, $errmsg, $errfile = '', $errline = 0)
-    {
-        $notice = 'Connection failed.';
-        $this->setError(
-            $notice,
-            $errmsg,
-            (string) $errno
-        );
-        $this->edebug(
-            "$notice Error #$errno: $errmsg [$errfile line $errline]",
-            self::DEBUG_CONNECTION
-        );
-    }
-
-    /**
-     * Extract and return the ID of the last SMTP transaction based on
-     * a list of patterns provided in SMTP::$smtp_transaction_id_patterns.
-     * Relies on the host providing the ID in response to a DATA command.
-     * If no reply has been received yet, it will return null.
-     * If no pattern was matched, it will return false.
-     *
-     * @return bool|null|string
-     */
-    protected function recordLastTransactionID()
-    {
-        $reply = $this->getLastReply();
-
-        if (empty($reply)) {
-            $this->last_smtp_transaction_id = null;
-        } else {
-            $this->last_smtp_transaction_id = false;
-            foreach ($this->smtp_transaction_id_patterns as $smtp_transaction_id_pattern) {
-                if (preg_match($smtp_transaction_id_pattern, $reply, $matches)) {
-                    $this->last_smtp_transaction_id = $matches[1];
-                    break;
-                }
-            }
-        }
-
-        return $this->last_smtp_transaction_id;
-    }
-
-    /**
-     * Get the queue/transaction ID of the last SMTP transaction
-     * If no reply has been received yet, it will return null.
-     * If no pattern was matched, it will return false.
-     *
-     * @return bool|null|string
-     *
-     * @see recordLastTransactionID()
-     */
-    public function getLastTransactionID()
-    {
-        return $this->last_smtp_transaction_id;
-    }
+		$field = substr($lines[0], 0, strpos($lines[0], ':'));
+		$in_headers = false;
+		if (!empty($field) and strpos($field, ' ') === false) {
+			$in_headers = true;
+		}
+
+		foreach ($lines as $line) {
+			$lines_out = [];
+			if ($in_headers and $line == '') {
+				$in_headers = false;
+			}
+			//Break this line up into several smaller lines if it's too long
+			//Micro-optimisation: isset($str[$len]) is faster than (strlen($str) > $len),
+			while (isset($line[self::MAX_LINE_LENGTH])) {
+				//Working backwards, try to find a space within the last MAX_LINE_LENGTH chars of the line to break on
+				//so as to avoid breaking in the middle of a word
+				$pos = strrpos(substr($line, 0, self::MAX_LINE_LENGTH), ' ');
+				//Deliberately matches both false and 0
+				if (!$pos) {
+					//No nice break found, add a hard break
+					$pos = self::MAX_LINE_LENGTH - 1;
+					$lines_out[] = substr($line, 0, $pos);
+					$line = substr($line, $pos);
+				} else {
+					//Break at the found point
+					$lines_out[] = substr($line, 0, $pos);
+					//Move along by the amount we dealt with
+					$line = substr($line, $pos + 1);
+				}
+				//If processing headers add a LWSP-char to the front of new line RFC822 section 3.1.1
+				if ($in_headers) {
+					$line = "\t" . $line;
+				}
+			}
+			$lines_out[] = $line;
+
+			//Send the lines to the server
+			foreach ($lines_out as $line_out) {
+				//RFC2821 section 4.5.2
+				if (!empty($line_out) and $line_out[0] == '.') {
+					$line_out = '.' . $line_out;
+				}
+				$this->client_send($line_out . static::LE);
+			}
+		}
+
+		//Message data has been sent, complete the command
+		//Increase timelimit for end of DATA command
+		$savetimelimit = $this->Timelimit;
+		$this->Timelimit = $this->Timelimit * 2;
+		$result = $this->sendCommand('DATA END', '.', 250);
+		$this->recordLastTransactionID();
+		//Restore timelimit
+		$this->Timelimit = $savetimelimit;
+
+		return $result;
+	}
+
+	/**
+	 * Send an SMTP HELO or EHLO command.
+	 * Used to identify the sending server to the receiving server.
+	 * This makes sure that client and server are in a known state.
+	 * Implements RFC 821: HELO <SP> <domain> <CRLF>
+	 * and RFC 2821 EHLO.
+	 *
+	 * @param string $host The host name or IP to connect to
+	 *
+	 * @return bool
+	 */
+	public function hello($host = '')
+	{
+		//Try extended hello first (RFC 2821)
+		return (bool) ($this->sendHello('EHLO', $host) or $this->sendHello('HELO', $host));
+	}
+
+	/**
+	 * Send an SMTP HELO or EHLO command.
+	 * Low-level implementation used by hello().
+	 *
+	 * @param string $hello The HELO string
+	 * @param string $host  The hostname to say we are
+	 *
+	 * @return bool
+	 *
+	 * @see    hello()
+	 */
+	protected function sendHello($hello, $host)
+	{
+		$noerror = $this->sendCommand($hello, $hello . ' ' . $host, 250);
+		$this->helo_rply = $this->last_reply;
+		if ($noerror) {
+			$this->parseHelloFields($hello);
+		} else {
+			$this->server_caps = null;
+		}
+
+		return $noerror;
+	}
+
+	/**
+	 * Parse a reply to HELO/EHLO command to discover server extensions.
+	 * In case of HELO, the only parameter that can be discovered is a server name.
+	 *
+	 * @param string $type `HELO` or `EHLO`
+	 */
+	protected function parseHelloFields($type)
+	{
+		$this->server_caps = [];
+		$lines = explode("\n", $this->helo_rply);
+
+		foreach ($lines as $n => $s) {
+			//First 4 chars contain response code followed by - or space
+			$s = trim(substr($s, 4));
+			if (empty($s)) {
+				continue;
+			}
+			$fields = explode(' ', $s);
+			if (!empty($fields)) {
+				if (!$n) {
+					$name = $type;
+					$fields = $fields[0];
+				} else {
+					$name = array_shift($fields);
+					switch ($name) {
+						case 'SIZE':
+							$fields = ($fields ? $fields[0] : 0);
+							break;
+						case 'AUTH':
+							if (!is_array($fields)) {
+								$fields = [];
+							}
+							break;
+						default:
+							$fields = true;
+					}
+				}
+				$this->server_caps[$name] = $fields;
+			}
+		}
+	}
+
+	/**
+	 * Send an SMTP MAIL command.
+	 * Starts a mail transaction from the email address specified in
+	 * $from. Returns true if successful or false otherwise. If True
+	 * the mail transaction is started and then one or more recipient
+	 * commands may be called followed by a data command.
+	 * Implements RFC 821: MAIL <SP> FROM:<reverse-path> <CRLF>.
+	 *
+	 * @param string $from Source address of this message
+	 *
+	 * @return bool
+	 */
+	public function mail($from)
+	{
+		$useVerp = ($this->do_verp ? ' XVERP' : '');
+
+		return $this->sendCommand(
+			'MAIL FROM',
+			'MAIL FROM:<' . $from . '>' . $useVerp,
+			250
+		);
+	}
+
+	/**
+	 * Send an SMTP QUIT command.
+	 * Closes the socket if there is no error or the $close_on_error argument is true.
+	 * Implements from RFC 821: QUIT <CRLF>.
+	 *
+	 * @param bool $close_on_error Should the connection close if an error occurs?
+	 *
+	 * @return bool
+	 */
+	public function quit($close_on_error = true)
+	{
+		$noerror = $this->sendCommand('QUIT', 'QUIT', 221);
+		$err = $this->error; //Save any error
+		if ($noerror or $close_on_error) {
+			$this->close();
+			$this->error = $err; //Restore any error from the quit command
+		}
+
+		return $noerror;
+	}
+
+	/**
+	 * Send an SMTP RCPT command.
+	 * Sets the TO argument to $toaddr.
+	 * Returns true if the recipient was accepted false if it was rejected.
+	 * Implements from RFC 821: RCPT <SP> TO:<forward-path> <CRLF>.
+	 *
+	 * @param string $address The address the message is being sent to
+	 *
+	 * @return bool
+	 */
+	public function recipient($address)
+	{
+		return $this->sendCommand(
+			'RCPT TO',
+			'RCPT TO:<' . $address . '>',
+			[250, 251]
+		);
+	}
+
+	/**
+	 * Send an SMTP RSET command.
+	 * Abort any transaction that is currently in progress.
+	 * Implements RFC 821: RSET <CRLF>.
+	 *
+	 * @return bool True on success
+	 */
+	public function reset()
+	{
+		return $this->sendCommand('RSET', 'RSET', 250);
+	}
+
+	/**
+	 * Send a command to an SMTP server and check its return code.
+	 *
+	 * @param string    $command       The command name - not sent to the server
+	 * @param string    $commandstring The actual command to send
+	 * @param int|array $expect        One or more expected integer success codes
+	 *
+	 * @return bool True on success
+	 */
+	protected function sendCommand($command, $commandstring, $expect)
+	{
+		if (!$this->connected()) {
+			$this->setError("Called $command without being connected");
+
+			return false;
+		}
+		//Reject line breaks in all commands
+		if (strpos($commandstring, "\n") !== false or strpos($commandstring, "\r") !== false) {
+			$this->setError("Command '$command' contained line breaks");
+
+			return false;
+		}
+		$this->client_send($commandstring . static::LE);
+
+		$this->last_reply = $this->get_lines();
+		// Fetch SMTP code and possible error code explanation
+		$matches = [];
+		if (preg_match('/^([0-9]{3})[ -](?:([0-9]\\.[0-9]\\.[0-9]) )?/', $this->last_reply, $matches)) {
+			$code = $matches[1];
+			$code_ex = (count($matches) > 2 ? $matches[2] : null);
+			// Cut off error code from each response line
+			$detail = preg_replace(
+				"/{$code}[ -]" .
+				($code_ex ? str_replace('.', '\\.', $code_ex) . ' ' : '') . '/m',
+				'',
+				$this->last_reply
+			);
+		} else {
+			// Fall back to simple parsing if regex fails
+			$code = substr($this->last_reply, 0, 3);
+			$code_ex = null;
+			$detail = substr($this->last_reply, 4);
+		}
+
+		$this->edebug('SERVER -> CLIENT: ' . $this->last_reply, self::DEBUG_SERVER);
+
+		if (!in_array($code, (array) $expect)) {
+			$this->setError(
+				"$command command failed",
+				$detail,
+				$code,
+				$code_ex
+			);
+			$this->edebug(
+				'SMTP ERROR: ' . $this->error['error'] . ': ' . $this->last_reply,
+				self::DEBUG_CLIENT
+			);
+
+			return false;
+		}
+
+		$this->setError('');
+
+		return true;
+	}
+
+	/**
+	 * Send an SMTP SAML command.
+	 * Starts a mail transaction from the email address specified in $from.
+	 * Returns true if successful or false otherwise. If True
+	 * the mail transaction is started and then one or more recipient
+	 * commands may be called followed by a data command. This command
+	 * will send the message to the users terminal if they are logged
+	 * in and send them an email.
+	 * Implements RFC 821: SAML <SP> FROM:<reverse-path> <CRLF>.
+	 *
+	 * @param string $from The address the message is from
+	 *
+	 * @return bool
+	 */
+	public function sendAndMail($from)
+	{
+		return $this->sendCommand('SAML', "SAML FROM:$from", 250);
+	}
+
+	/**
+	 * Send an SMTP VRFY command.
+	 *
+	 * @param string $name The name to verify
+	 *
+	 * @return bool
+	 */
+	public function verify($name)
+	{
+		return $this->sendCommand('VRFY', "VRFY $name", [250, 251]);
+	}
+
+	/**
+	 * Send an SMTP NOOP command.
+	 * Used to keep keep-alives alive, doesn't actually do anything.
+	 *
+	 * @return bool
+	 */
+	public function noop()
+	{
+		return $this->sendCommand('NOOP', 'NOOP', 250);
+	}
+
+	/**
+	 * Send an SMTP TURN command.
+	 * This is an optional command for SMTP that this class does not support.
+	 * This method is here to make the RFC821 Definition complete for this class
+	 * and _may_ be implemented in future.
+	 * Implements from RFC 821: TURN <CRLF>.
+	 *
+	 * @return bool
+	 */
+	public function turn()
+	{
+		$this->setError('The SMTP TURN command is not implemented');
+		$this->edebug('SMTP NOTICE: ' . $this->error['error'], self::DEBUG_CLIENT);
+
+		return false;
+	}
+
+	/**
+	 * Send raw data to the server.
+	 *
+	 * @param string $data The data to send
+	 *
+	 * @return int|bool The number of bytes sent to the server or false on error
+	 */
+	public function client_send($data)
+	{
+		$this->edebug("CLIENT -> SERVER: $data", self::DEBUG_CLIENT);
+		set_error_handler([$this, 'errorHandler']);
+		$result = fwrite($this->smtp_conn, $data);
+		restore_error_handler();
+
+		return $result;
+	}
+
+	/**
+	 * Get the latest error.
+	 *
+	 * @return array
+	 */
+	public function getError()
+	{
+		return $this->error;
+	}
+
+	/**
+	 * Get SMTP extensions available on the server.
+	 *
+	 * @return array|null
+	 */
+	public function getServerExtList()
+	{
+		return $this->server_caps;
+	}
+
+	/**
+	 * Get metadata about the SMTP server from its HELO/EHLO response.
+	 * The method works in three ways, dependent on argument value and current state:
+	 *   1. HELO/EHLO has not been sent - returns null and populates $this->error.
+	 *   2. HELO has been sent -
+	 *     $name == 'HELO': returns server name
+	 *     $name == 'EHLO': returns boolean false
+	 *     $name == any other string: returns null and populates $this->error
+	 *   3. EHLO has been sent -
+	 *     $name == 'HELO'|'EHLO': returns the server name
+	 *     $name == any other string: if extension $name exists, returns True
+	 *       or its options (e.g. AUTH mechanisms supported). Otherwise returns False.
+	 *
+	 * @param string $name Name of SMTP extension or 'HELO'|'EHLO'
+	 *
+	 * @return mixed
+	 */
+	public function getServerExt($name)
+	{
+		if (!$this->server_caps) {
+			$this->setError('No HELO/EHLO was sent');
+
+			return;
+		}
+
+		if (!array_key_exists($name, $this->server_caps)) {
+			if ('HELO' == $name) {
+				return $this->server_caps['EHLO'];
+			}
+			if ('EHLO' == $name || array_key_exists('EHLO', $this->server_caps)) {
+				return false;
+			}
+			$this->setError('HELO handshake was used; No information about server extensions available');
+
+			return;
+		}
+
+		return $this->server_caps[$name];
+	}
+
+	/**
+	 * Get the last reply from the server.
+	 *
+	 * @return string
+	 */
+	public function getLastReply()
+	{
+		return $this->last_reply;
+	}
+
+	/**
+	 * Read the SMTP server's response.
+	 * Either before eof or socket timeout occurs on the operation.
+	 * With SMTP we can tell if we have more lines to read if the
+	 * 4th character is '-' symbol. If it is a space then we don't
+	 * need to read anything else.
+	 *
+	 * @return string
+	 */
+	protected function get_lines()
+	{
+		// If the connection is bad, give up straight away
+		if (!is_resource($this->smtp_conn)) {
+			return '';
+		}
+		$data = '';
+		$endtime = 0;
+		stream_set_timeout($this->smtp_conn, $this->Timeout);
+		if ($this->Timelimit > 0) {
+			$endtime = time() + $this->Timelimit;
+		}
+		$selR = [$this->smtp_conn];
+		$selW = null;
+		while (is_resource($this->smtp_conn) and !feof($this->smtp_conn)) {
+			//Must pass vars in here as params are by reference
+			if (!stream_select($selR, $selW, $selW, $this->Timelimit)) {
+				$this->edebug(
+					'SMTP -> get_lines(): timed-out (' . $this->Timeout . ' sec)',
+					self::DEBUG_LOWLEVEL
+				);
+				break;
+			}
+			//Deliberate noise suppression - errors are handled afterwards
+			$str = @fgets($this->smtp_conn, 515);
+			$this->edebug('SMTP INBOUND: "' . trim($str) . '"', self::DEBUG_LOWLEVEL);
+			$data .= $str;
+			// If response is only 3 chars (not valid, but RFC5321 S4.2 says it must be handled),
+			// or 4th character is a space, we are done reading, break the loop,
+			// string array access is a micro-optimisation over strlen
+			if (!isset($str[3]) or (isset($str[3]) and $str[3] == ' ')) {
+				break;
+			}
+			// Timed-out? Log and break
+			$info = stream_get_meta_data($this->smtp_conn);
+			if ($info['timed_out']) {
+				$this->edebug(
+					'SMTP -> get_lines(): timed-out (' . $this->Timeout . ' sec)',
+					self::DEBUG_LOWLEVEL
+				);
+				break;
+			}
+			// Now check if reads took too long
+			if ($endtime and time() > $endtime) {
+				$this->edebug(
+					'SMTP -> get_lines(): timelimit reached (' .
+					$this->Timelimit . ' sec)',
+					self::DEBUG_LOWLEVEL
+				);
+				break;
+			}
+		}
+
+		return $data;
+	}
+
+	/**
+	 * Enable or disable VERP address generation.
+	 *
+	 * @param bool $enabled
+	 */
+	public function setVerp($enabled = false)
+	{
+		$this->do_verp = $enabled;
+	}
+
+	/**
+	 * Get VERP address generation mode.
+	 *
+	 * @return bool
+	 */
+	public function getVerp()
+	{
+		return $this->do_verp;
+	}
+
+	/**
+	 * Set error messages and codes.
+	 *
+	 * @param string $message      The error message
+	 * @param string $detail       Further detail on the error
+	 * @param string $smtp_code    An associated SMTP error code
+	 * @param string $smtp_code_ex Extended SMTP code
+	 */
+	protected function setError($message, $detail = '', $smtp_code = '', $smtp_code_ex = '')
+	{
+		$this->error = [
+			'error' => $message,
+			'detail' => $detail,
+			'smtp_code' => $smtp_code,
+			'smtp_code_ex' => $smtp_code_ex,
+		];
+	}
+
+	/**
+	 * Set debug output method.
+	 *
+	 * @param string|callable $method The name of the mechanism to use for debugging output, or a callable to handle it
+	 */
+	public function setDebugOutput($method = 'echo')
+	{
+		$this->Debugoutput = $method;
+	}
+
+	/**
+	 * Get debug output method.
+	 *
+	 * @return string
+	 */
+	public function getDebugOutput()
+	{
+		return $this->Debugoutput;
+	}
+
+	/**
+	 * Set debug output level.
+	 *
+	 * @param int $level
+	 */
+	public function setDebugLevel($level = 0)
+	{
+		$this->do_debug = $level;
+	}
+
+	/**
+	 * Get debug output level.
+	 *
+	 * @return int
+	 */
+	public function getDebugLevel()
+	{
+		return $this->do_debug;
+	}
+
+	/**
+	 * Set SMTP timeout.
+	 *
+	 * @param int $timeout The timeout duration in seconds
+	 */
+	public function setTimeout($timeout = 0)
+	{
+		$this->Timeout = $timeout;
+	}
+
+	/**
+	 * Get SMTP timeout.
+	 *
+	 * @return int
+	 */
+	public function getTimeout()
+	{
+		return $this->Timeout;
+	}
+
+	/**
+	 * Reports an error number and string.
+	 *
+	 * @param int    $errno   The error number returned by PHP
+	 * @param string $errmsg  The error message returned by PHP
+	 * @param string $errfile The file the error occurred in
+	 * @param int    $errline The line number the error occurred on
+	 */
+	protected function errorHandler($errno, $errmsg, $errfile = '', $errline = 0)
+	{
+		$notice = 'Connection failed.';
+		$this->setError(
+			$notice,
+			$errmsg,
+			(string) $errno
+		);
+		$this->edebug(
+			"$notice Error #$errno: $errmsg [$errfile line $errline]",
+			self::DEBUG_CONNECTION
+		);
+	}
+
+	/**
+	 * Extract and return the ID of the last SMTP transaction based on
+	 * a list of patterns provided in SMTP::$smtp_transaction_id_patterns.
+	 * Relies on the host providing the ID in response to a DATA command.
+	 * If no reply has been received yet, it will return null.
+	 * If no pattern was matched, it will return false.
+	 *
+	 * @return bool|null|string
+	 */
+	protected function recordLastTransactionID()
+	{
+		$reply = $this->getLastReply();
+
+		if (empty($reply)) {
+			$this->last_smtp_transaction_id = null;
+		} else {
+			$this->last_smtp_transaction_id = false;
+			foreach ($this->smtp_transaction_id_patterns as $smtp_transaction_id_pattern) {
+				if (preg_match($smtp_transaction_id_pattern, $reply, $matches)) {
+					$this->last_smtp_transaction_id = $matches[1];
+					break;
+				}
+			}
+		}
+
+		return $this->last_smtp_transaction_id;
+	}
+
+	/**
+	 * Get the queue/transaction ID of the last SMTP transaction
+	 * If no reply has been received yet, it will return null.
+	 * If no pattern was matched, it will return false.
+	 *
+	 * @return bool|null|string
+	 *
+	 * @see recordLastTransactionID()
+	 */
+	public function getLastTransactionID()
+	{
+		return $this->last_smtp_transaction_id;
+	}
 }

www/vendor/PHPMailer/PHPMailer/POP3.php

Indentation +376 added lines, -376 removed lines

@@ -40,380 +40,380 @@
  */
 class POP3
 {
-    /**
-     * The POP3 PHPMailer Version number.
-     *
-     * @var string
-     */
-    const VERSION = '6.0.1';
-
-    /**
-     * Default POP3 port number.
-     *
-     * @var int
-     */
-    const DEFAULT_PORT = 110;
-
-    /**
-     * Default timeout in seconds.
-     *
-     * @var int
-     */
-    const DEFAULT_TIMEOUT = 30;
-
-    /**
-     * Debug display level.
-     * Options: 0 = no, 1+ = yes.
-     *
-     * @var int
-     */
-    public $do_debug = 0;
-
-    /**
-     * POP3 mail server hostname.
-     *
-     * @var string
-     */
-    public $host;
-
-    /**
-     * POP3 port number.
-     *
-     * @var int
-     */
-    public $port;
-
-    /**
-     * POP3 Timeout Value in seconds.
-     *
-     * @var int
-     */
-    public $tval;
-
-    /**
-     * POP3 username.
-     *
-     * @var string
-     */
-    public $username;
-
-    /**
-     * POP3 password.
-     *
-     * @var string
-     */
-    public $password;
-
-    /**
-     * Resource handle for the POP3 connection socket.
-     *
-     * @var resource
-     */
-    protected $pop_conn;
-
-    /**
-     * Are we connected?
-     *
-     * @var bool
-     */
-    protected $connected = false;
-
-    /**
-     * Error container.
-     *
-     * @var array
-     */
-    protected $errors = [];
-
-    /**
-     * Line break constant.
-     */
-    const LE = "\r\n";
-
-    /**
-     * Simple static wrapper for all-in-one POP before SMTP.
-     *
-     * @param string   $host        The hostname to connect to
-     * @param int|bool $port        The port number to connect to
-     * @param int|bool $timeout     The timeout value
-     * @param string   $username
-     * @param string   $password
-     * @param int      $debug_level
-     *
-     * @return bool
-     */
-    public static function popBeforeSmtp(
-        $host,
-        $port = false,
-        $timeout = false,
-        $username = '',
-        $password = '',
-        $debug_level = 0
-    ) {
-        $pop = new self();
-
-        return $pop->authorise($host, $port, $timeout, $username, $password, $debug_level);
-    }
-
-    /**
-     * Authenticate with a POP3 server.
-     * A connect, login, disconnect sequence
-     * appropriate for POP-before SMTP authorisation.
-     *
-     * @param string   $host        The hostname to connect to
-     * @param int|bool $port        The port number to connect to
-     * @param int|bool $timeout     The timeout value
-     * @param string   $username
-     * @param string   $password
-     * @param int      $debug_level
-     *
-     * @return bool
-     */
-    public function authorise($host, $port = false, $timeout = false, $username = '', $password = '', $debug_level = 0)
-    {
-        $this->host = $host;
-        // If no port value provided, use default
-        if (false === $port) {
-            $this->port = static::DEFAULT_PORT;
-        } else {
-            $this->port = (int) $port;
-        }
-        // If no timeout value provided, use default
-        if (false === $timeout) {
-            $this->tval = static::DEFAULT_TIMEOUT;
-        } else {
-            $this->tval = (int) $timeout;
-        }
-        $this->do_debug = $debug_level;
-        $this->username = $username;
-        $this->password = $password;
-        //  Reset the error log
-        $this->errors = [];
-        //  connect
-        $result = $this->connect($this->host, $this->port, $this->tval);
-        if ($result) {
-            $login_result = $this->login($this->username, $this->password);
-            if ($login_result) {
-                $this->disconnect();
-
-                return true;
-            }
-        }
-        // We need to disconnect regardless of whether the login succeeded
-        $this->disconnect();
-
-        return false;
-    }
-
-    /**
-     * Connect to a POP3 server.
-     *
-     * @param string   $host
-     * @param int|bool $port
-     * @param int      $tval
-     *
-     * @return bool
-     */
-    public function connect($host, $port = false, $tval = 30)
-    {
-        //  Are we already connected?
-        if ($this->connected) {
-            return true;
-        }
-
-        //On Windows this will raise a PHP Warning error if the hostname doesn't exist.
-        //Rather than suppress it with @fsockopen, capture it cleanly instead
-        set_error_handler([$this, 'catchWarning']);
-
-        if (false === $port) {
-            $port = static::DEFAULT_PORT;
-        }
-
-        //  connect to the POP3 server
-        $this->pop_conn = fsockopen(
-            $host, //  POP3 Host
-            $port, //  Port #
-            $errno, //  Error Number
-            $errstr, //  Error Message
-            $tval
-        ); //  Timeout (seconds)
-        //  Restore the error handler
-        restore_error_handler();
-
-        //  Did we connect?
-        if (false === $this->pop_conn) {
-            //  It would appear not...
-            $this->setError(
-                "Failed to connect to server $host on port $port. errno: $errno; errstr: $errstr"
-            );
-
-            return false;
-        }
-
-        //  Increase the stream time-out
-        stream_set_timeout($this->pop_conn, $tval, 0);
-
-        //  Get the POP3 server response
-        $pop3_response = $this->getResponse();
-        //  Check for the +OK
-        if ($this->checkResponse($pop3_response)) {
-            //  The connection is established and the POP3 server is talking
-            $this->connected = true;
-
-            return true;
-        }
-
-        return false;
-    }
-
-    /**
-     * Log in to the POP3 server.
-     * Does not support APOP (RFC 2828, 4949).
-     *
-     * @param string $username
-     * @param string $password
-     *
-     * @return bool
-     */
-    public function login($username = '', $password = '')
-    {
-        if (!$this->connected) {
-            $this->setError('Not connected to POP3 server');
-        }
-        if (empty($username)) {
-            $username = $this->username;
-        }
-        if (empty($password)) {
-            $password = $this->password;
-        }
-
-        // Send the Username
-        $this->sendString("USER $username" . static::LE);
-        $pop3_response = $this->getResponse();
-        if ($this->checkResponse($pop3_response)) {
-            // Send the Password
-            $this->sendString("PASS $password" . static::LE);
-            $pop3_response = $this->getResponse();
-            if ($this->checkResponse($pop3_response)) {
-                return true;
-            }
-        }
-
-        return false;
-    }
-
-    /**
-     * Disconnect from the POP3 server.
-     */
-    public function disconnect()
-    {
-        $this->sendString('QUIT');
-        //The QUIT command may cause the daemon to exit, which will kill our connection
-        //So ignore errors here
-        try {
-            @fclose($this->pop_conn);
-        } catch (Exception $e) {
-            //Do nothing
-        }
-    }
-
-    /**
-     * Get a response from the POP3 server.
-     *
-     * @param int $size The maximum number of bytes to retrieve
-     *
-     * @return string
-     */
-    protected function getResponse($size = 128)
-    {
-        $response = fgets($this->pop_conn, $size);
-        if ($this->do_debug >= 1) {
-            echo 'Server -> Client: ', $response;
-        }
-
-        return $response;
-    }
-
-    /**
-     * Send raw data to the POP3 server.
-     *
-     * @param string $string
-     *
-     * @return int
-     */
-    protected function sendString($string)
-    {
-        if ($this->pop_conn) {
-            if ($this->do_debug >= 2) { //Show client messages when debug >= 2
-                echo 'Client -> Server: ', $string;
-            }
-
-            return fwrite($this->pop_conn, $string, strlen($string));
-        }
-
-        return 0;
-    }
-
-    /**
-     * Checks the POP3 server response.
-     * Looks for for +OK or -ERR.
-     *
-     * @param string $string
-     *
-     * @return bool
-     */
-    protected function checkResponse($string)
-    {
-        if (substr($string, 0, 3) !== '+OK') {
-            $this->setError("Server reported an error: $string");
-
-            return false;
-        }
-
-        return true;
-    }
-
-    /**
-     * Add an error to the internal error store.
-     * Also display debug output if it's enabled.
-     *
-     * @param string $error
-     */
-    protected function setError($error)
-    {
-        $this->errors[] = $error;
-        if ($this->do_debug >= 1) {
-            echo '<pre>';
-            foreach ($this->errors as $error) {
-                print_r($error);
-            }
-            echo '</pre>';
-        }
-    }
-
-    /**
-     * Get an array of error messages, if any.
-     *
-     * @return array
-     */
-    public function getErrors()
-    {
-        return $this->errors;
-    }
-
-    /**
-     * POP3 connection error handler.
-     *
-     * @param int    $errno
-     * @param string $errstr
-     * @param string $errfile
-     * @param int    $errline
-     */
-    protected function catchWarning($errno, $errstr, $errfile, $errline)
-    {
-        $this->setError(
-            'Connecting to the POP3 server raised a PHP warning:' .
-            "errno: $errno errstr: $errstr; errfile: $errfile; errline: $errline"
-        );
-    }
+	/**
+	 * The POP3 PHPMailer Version number.
+	 *
+	 * @var string
+	 */
+	const VERSION = '6.0.1';
+
+	/**
+	 * Default POP3 port number.
+	 *
+	 * @var int
+	 */
+	const DEFAULT_PORT = 110;
+
+	/**
+	 * Default timeout in seconds.
+	 *
+	 * @var int
+	 */
+	const DEFAULT_TIMEOUT = 30;
+
+	/**
+	 * Debug display level.
+	 * Options: 0 = no, 1+ = yes.
+	 *
+	 * @var int
+	 */
+	public $do_debug = 0;
+
+	/**
+	 * POP3 mail server hostname.
+	 *
+	 * @var string
+	 */
+	public $host;
+
+	/**
+	 * POP3 port number.
+	 *
+	 * @var int
+	 */
+	public $port;
+
+	/**
+	 * POP3 Timeout Value in seconds.
+	 *
+	 * @var int
+	 */
+	public $tval;
+
+	/**
+	 * POP3 username.
+	 *
+	 * @var string
+	 */
+	public $username;
+
+	/**
+	 * POP3 password.
+	 *
+	 * @var string
+	 */
+	public $password;
+
+	/**
+	 * Resource handle for the POP3 connection socket.
+	 *
+	 * @var resource
+	 */
+	protected $pop_conn;
+
+	/**
+	 * Are we connected?
+	 *
+	 * @var bool
+	 */
+	protected $connected = false;
+
+	/**
+	 * Error container.
+	 *
+	 * @var array
+	 */
+	protected $errors = [];
+
+	/**
+	 * Line break constant.
+	 */
+	const LE = "\r\n";
+
+	/**
+	 * Simple static wrapper for all-in-one POP before SMTP.
+	 *
+	 * @param string   $host        The hostname to connect to
+	 * @param int|bool $port        The port number to connect to
+	 * @param int|bool $timeout     The timeout value
+	 * @param string   $username
+	 * @param string   $password
+	 * @param int      $debug_level
+	 *
+	 * @return bool
+	 */
+	public static function popBeforeSmtp(
+		$host,
+		$port = false,
+		$timeout = false,
+		$username = '',
+		$password = '',
+		$debug_level = 0
+	) {
+		$pop = new self();
+
+		return $pop->authorise($host, $port, $timeout, $username, $password, $debug_level);
+	}
+
+	/**
+	 * Authenticate with a POP3 server.
+	 * A connect, login, disconnect sequence
+	 * appropriate for POP-before SMTP authorisation.
+	 *
+	 * @param string   $host        The hostname to connect to
+	 * @param int|bool $port        The port number to connect to
+	 * @param int|bool $timeout     The timeout value
+	 * @param string   $username
+	 * @param string   $password
+	 * @param int      $debug_level
+	 *
+	 * @return bool
+	 */
+	public function authorise($host, $port = false, $timeout = false, $username = '', $password = '', $debug_level = 0)
+	{
+		$this->host = $host;
+		// If no port value provided, use default
+		if (false === $port) {
+			$this->port = static::DEFAULT_PORT;
+		} else {
+			$this->port = (int) $port;
+		}
+		// If no timeout value provided, use default
+		if (false === $timeout) {
+			$this->tval = static::DEFAULT_TIMEOUT;
+		} else {
+			$this->tval = (int) $timeout;
+		}
+		$this->do_debug = $debug_level;
+		$this->username = $username;
+		$this->password = $password;
+		//  Reset the error log
+		$this->errors = [];
+		//  connect
+		$result = $this->connect($this->host, $this->port, $this->tval);
+		if ($result) {
+			$login_result = $this->login($this->username, $this->password);
+			if ($login_result) {
+				$this->disconnect();
+
+				return true;
+			}
+		}
+		// We need to disconnect regardless of whether the login succeeded
+		$this->disconnect();
+
+		return false;
+	}
+
+	/**
+	 * Connect to a POP3 server.
+	 *
+	 * @param string   $host
+	 * @param int|bool $port
+	 * @param int      $tval
+	 *
+	 * @return bool
+	 */
+	public function connect($host, $port = false, $tval = 30)
+	{
+		//  Are we already connected?
+		if ($this->connected) {
+			return true;
+		}
+
+		//On Windows this will raise a PHP Warning error if the hostname doesn't exist.
+		//Rather than suppress it with @fsockopen, capture it cleanly instead
+		set_error_handler([$this, 'catchWarning']);
+
+		if (false === $port) {
+			$port = static::DEFAULT_PORT;
+		}
+
+		//  connect to the POP3 server
+		$this->pop_conn = fsockopen(
+			$host, //  POP3 Host
+			$port, //  Port #
+			$errno, //  Error Number
+			$errstr, //  Error Message
+			$tval
+		); //  Timeout (seconds)
+		//  Restore the error handler
+		restore_error_handler();
+
+		//  Did we connect?
+		if (false === $this->pop_conn) {
+			//  It would appear not...
+			$this->setError(
+				"Failed to connect to server $host on port $port. errno: $errno; errstr: $errstr"
+			);
+
+			return false;
+		}
+
+		//  Increase the stream time-out
+		stream_set_timeout($this->pop_conn, $tval, 0);
+
+		//  Get the POP3 server response
+		$pop3_response = $this->getResponse();
+		//  Check for the +OK
+		if ($this->checkResponse($pop3_response)) {
+			//  The connection is established and the POP3 server is talking
+			$this->connected = true;
+
+			return true;
+		}
+
+		return false;
+	}
+
+	/**
+	 * Log in to the POP3 server.
+	 * Does not support APOP (RFC 2828, 4949).
+	 *
+	 * @param string $username
+	 * @param string $password
+	 *
+	 * @return bool
+	 */
+	public function login($username = '', $password = '')
+	{
+		if (!$this->connected) {
+			$this->setError('Not connected to POP3 server');
+		}
+		if (empty($username)) {
+			$username = $this->username;
+		}
+		if (empty($password)) {
+			$password = $this->password;
+		}
+
+		// Send the Username
+		$this->sendString("USER $username" . static::LE);
+		$pop3_response = $this->getResponse();
+		if ($this->checkResponse($pop3_response)) {
+			// Send the Password
+			$this->sendString("PASS $password" . static::LE);
+			$pop3_response = $this->getResponse();
+			if ($this->checkResponse($pop3_response)) {
+				return true;
+			}
+		}
+
+		return false;
+	}
+
+	/**
+	 * Disconnect from the POP3 server.
+	 */
+	public function disconnect()
+	{
+		$this->sendString('QUIT');
+		//The QUIT command may cause the daemon to exit, which will kill our connection
+		//So ignore errors here
+		try {
+			@fclose($this->pop_conn);
+		} catch (Exception $e) {
+			//Do nothing
+		}
+	}
+
+	/**
+	 * Get a response from the POP3 server.
+	 *
+	 * @param int $size The maximum number of bytes to retrieve
+	 *
+	 * @return string
+	 */
+	protected function getResponse($size = 128)
+	{
+		$response = fgets($this->pop_conn, $size);
+		if ($this->do_debug >= 1) {
+			echo 'Server -> Client: ', $response;
+		}
+
+		return $response;
+	}
+
+	/**
+	 * Send raw data to the POP3 server.
+	 *
+	 * @param string $string
+	 *
+	 * @return int
+	 */
+	protected function sendString($string)
+	{
+		if ($this->pop_conn) {
+			if ($this->do_debug >= 2) { //Show client messages when debug >= 2
+				echo 'Client -> Server: ', $string;
+			}
+
+			return fwrite($this->pop_conn, $string, strlen($string));
+		}
+
+		return 0;
+	}
+
+	/**
+	 * Checks the POP3 server response.
+	 * Looks for for +OK or -ERR.
+	 *
+	 * @param string $string
+	 *
+	 * @return bool
+	 */
+	protected function checkResponse($string)
+	{
+		if (substr($string, 0, 3) !== '+OK') {
+			$this->setError("Server reported an error: $string");
+
+			return false;
+		}
+
+		return true;
+	}
+
+	/**
+	 * Add an error to the internal error store.
+	 * Also display debug output if it's enabled.
+	 *
+	 * @param string $error
+	 */
+	protected function setError($error)
+	{
+		$this->errors[] = $error;
+		if ($this->do_debug >= 1) {
+			echo '<pre>';
+			foreach ($this->errors as $error) {
+				print_r($error);
+			}
+			echo '</pre>';
+		}
+	}
+
+	/**
+	 * Get an array of error messages, if any.
+	 *
+	 * @return array
+	 */
+	public function getErrors()
+	{
+		return $this->errors;
+	}
+
+	/**
+	 * POP3 connection error handler.
+	 *
+	 * @param int    $errno
+	 * @param string $errstr
+	 * @param string $errfile
+	 * @param int    $errline
+	 */
+	protected function catchWarning($errno, $errstr, $errfile, $errline)
+	{
+		$this->setError(
+			'Connecting to the POP3 server raised a PHP warning:' .
+			"errno: $errno errstr: $errstr; errfile: $errfile; errline: $errline"
+		);
+	}
 }

www/vendor/PHPMailer/PHPMailer/PHPMailer.php

Indentation +4332 added lines, -4332 removed lines

@@ -30,1172 +30,1172 @@ 
  */
 class PHPMailer
 {
-    /**
-     * Email priority.
-     * Options: null (default), 1 = High, 3 = Normal, 5 = low.
-     * When null, the header is not set at all.
-     *
-     * @var int
-     */
-    public $Priority = null;
-
-    /**
-     * The character set of the message.
-     *
-     * @var string
-     */
-    public $CharSet = 'iso-8859-1';
-
-    /**
-     * The MIME Content-type of the message.
-     *
-     * @var string
-     */
-    public $ContentType = 'text/plain';
-
-    /**
-     * The message encoding.
-     * Options: "8bit", "7bit", "binary", "base64", and "quoted-printable".
-     *
-     * @var string
-     */
-    public $Encoding = '8bit';
-
-    /**
-     * Holds the most recent mailer error message.
-     *
-     * @var string
-     */
-    public $ErrorInfo = '';
-
-    /**
-     * The From email address for the message.
-     *
-     * @var string
-     */
-    public $From = 'root@localhost';
-
-    /**
-     * The From name of the message.
-     *
-     * @var string
-     */
-    public $FromName = 'Root User';
-
-    /**
-     * The envelope sender of the message.
-     * This will usually be turned into a Return-Path header by the receiver,
-     * and is the address that bounces will be sent to.
-     * If not empty, will be passed via `-f` to sendmail or as the 'MAIL FROM' value over SMTP.
-     *
-     * @var string
-     */
-    public $Sender = '';
-
-    /**
-     * The Subject of the message.
-     *
-     * @var string
-     */
-    public $Subject = '';
-
-    /**
-     * An HTML or plain text message body.
-     * If HTML then call isHTML(true).
-     *
-     * @var string
-     */
-    public $Body = '';
-
-    /**
-     * The plain-text message body.
-     * This body can be read by mail clients that do not have HTML email
-     * capability such as mutt & Eudora.
-     * Clients that can read HTML will view the normal Body.
-     *
-     * @var string
-     */
-    public $AltBody = '';
-
-    /**
-     * An iCal message part body.
-     * Only supported in simple alt or alt_inline message types
-     * To generate iCal event structures, use classes like EasyPeasyICS or iCalcreator.
-     *
-     * @see http://sprain.ch/blog/downloads/php-class-easypeasyics-create-ical-files-with-php/
-     * @see http://kigkonsult.se/iCalcreator/
-     *
-     * @var string
-     */
-    public $Ical = '';
-
-    /**
-     * The complete compiled MIME message body.
-     *
-     * @var string
-     */
-    protected $MIMEBody = '';
-
-    /**
-     * The complete compiled MIME message headers.
-     *
-     * @var string
-     */
-    protected $MIMEHeader = '';
-
-    /**
-     * Extra headers that createHeader() doesn't fold in.
-     *
-     * @var string
-     */
-    protected $mailHeader = '';
-
-    /**
-     * Word-wrap the message body to this number of chars.
-     * Set to 0 to not wrap. A useful value here is 78, for RFC2822 section 2.1.1 compliance.
-     *
-     * @see static::STD_LINE_LENGTH
-     *
-     * @var int
-     */
-    public $WordWrap = 0;
-
-    /**
-     * Which method to use to send mail.
-     * Options: "mail", "sendmail", or "smtp".
-     *
-     * @var string
-     */
-    public $Mailer = 'mail';
-
-    /**
-     * The path to the sendmail program.
-     *
-     * @var string
-     */
-    public $Sendmail = '/usr/sbin/sendmail';
-
-    /**
-     * Whether mail() uses a fully sendmail-compatible MTA.
-     * One which supports sendmail's "-oi -f" options.
-     *
-     * @var bool
-     */
-    public $UseSendmailOptions = true;
-
-    /**
-     * The email address that a reading confirmation should be sent to, also known as read receipt.
-     *
-     * @var string
-     */
-    public $ConfirmReadingTo = '';
-
-    /**
-     * The hostname to use in the Message-ID header and as default HELO string.
-     * If empty, PHPMailer attempts to find one with, in order,
-     * $_SERVER['SERVER_NAME'], gethostname(), php_uname('n'), or the value
-     * 'localhost.localdomain'.
-     *
-     * @var string
-     */
-    public $Hostname = '';
-
-    /**
-     * An ID to be used in the Message-ID header.
-     * If empty, a unique id will be generated.
-     * You can set your own, but it must be in the format "<id@domain>",
-     * as defined in RFC5322 section 3.6.4 or it will be ignored.
-     *
-     * @see https://tools.ietf.org/html/rfc5322#section-3.6.4
-     *
-     * @var string
-     */
-    public $MessageID = '';
-
-    /**
-     * The message Date to be used in the Date header.
-     * If empty, the current date will be added.
-     *
-     * @var string
-     */
-    public $MessageDate = '';
-
-    /**
-     * SMTP hosts.
-     * Either a single hostname or multiple semicolon-delimited hostnames.
-     * You can also specify a different port
-     * for each host by using this format: [hostname:port]
-     * (e.g. "smtp1.example.com:25;smtp2.example.com").
-     * You can also specify encryption type, for example:
-     * (e.g. "tls://smtp1.example.com:587;ssl://smtp2.example.com:465").
-     * Hosts will be tried in order.
-     *
-     * @var string
-     */
-    public $Host = 'localhost';
-
-    /**
-     * The default SMTP server port.
-     *
-     * @var int
-     */
-    public $Port = 25;
-
-    /**
-     * The SMTP HELO of the message.
-     * Default is $Hostname. If $Hostname is empty, PHPMailer attempts to find
-     * one with the same method described above for $Hostname.
-     *
-     * @see PHPMailer::$Hostname
-     *
-     * @var string
-     */
-    public $Helo = '';
-
-    /**
-     * What kind of encryption to use on the SMTP connection.
-     * Options: '', 'ssl' or 'tls'.
-     *
-     * @var string
-     */
-    public $SMTPSecure = '';
-
-    /**
-     * Whether to enable TLS encryption automatically if a server supports it,
-     * even if `SMTPSecure` is not set to 'tls'.
-     * Be aware that in PHP >= 5.6 this requires that the server's certificates are valid.
-     *
-     * @var bool
-     */
-    public $SMTPAutoTLS = true;
-
-    /**
-     * Whether to use SMTP Login.
-     * Uses the Username and Password properties.
-     *
-     * @see PHPMailer::$Username
-     * @see PHPMailer::$Password
-     *
-     * @var bool
-     */
-    public $SMTPAuth = false;
-
-    /**
-     * Options array passed to stream_context_create when connecting via SMTP.
-     *
-     * @var array
-     */
-    public $SMTPOptions = [];
-
-    /**
-     * SMTP username.
-     *
-     * @var string
-     */
-    public $Username = '';
-
-    /**
-     * SMTP password.
-     *
-     * @var string
-     */
-    public $Password = '';
-
-    /**
-     * SMTP auth type.
-     * Options are CRAM-MD5, LOGIN, PLAIN, XOAUTH2, attempted in that order if not specified.
-     *
-     * @var string
-     */
-    public $AuthType = '';
-
-    /**
-     * An instance of the PHPMailer OAuth class.
-     *
-     * @var OAuth
-     */
-    protected $oauth = null;
-
-    /**
-     * The SMTP server timeout in seconds.
-     * Default of 5 minutes (300sec) is from RFC2821 section 4.5.3.2.
-     *
-     * @var int
-     */
-    public $Timeout = 300;
-
-    /**
-     * SMTP class debug output mode.
-     * Debug output level.
-     * Options:
-     * * `0` No output
-     * * `1` Commands
-     * * `2` Data and commands
-     * * `3` As 2 plus connection status
-     * * `4` Low-level data output.
-     *
-     * @see SMTP::$do_debug
-     *
-     * @var int
-     */
-    public $SMTPDebug = 0;
-
-    /**
-     * How to handle debug output.
-     * Options:
-     * * `echo` Output plain-text as-is, appropriate for CLI
-     * * `html` Output escaped, line breaks converted to `<br>`, appropriate for browser output
-     * * `error_log` Output to error log as configured in php.ini
-     * By default PHPMailer will use `echo` if run from a `cli` or `cli-server` SAPI, `html` otherwise.
-     * Alternatively, you can provide a callable expecting two params: a message string and the debug level:
-     *
-     * ```php
-     * $mail->Debugoutput = function($str, $level) {echo "debug level $level; message: $str";};
-     * ```
-     *
-     * Alternatively, you can pass in an instance of a PSR-3 compatible logger, though only `debug`
-     * level output is used:
-     *
-     * ```php
-     * $mail->Debugoutput = new myPsr3Logger;
-     * ```
-     *
-     * @see SMTP::$Debugoutput
-     *
-     * @var string|callable|\Psr\Log\LoggerInterface
-     */
-    public $Debugoutput = 'echo';
-
-    /**
-     * Whether to keep SMTP connection open after each message.
-     * If this is set to true then to close the connection
-     * requires an explicit call to smtpClose().
-     *
-     * @var bool
-     */
-    public $SMTPKeepAlive = false;
-
-    /**
-     * Whether to split multiple to addresses into multiple messages
-     * or send them all in one message.
-     * Only supported in `mail` and `sendmail` transports, not in SMTP.
-     *
-     * @var bool
-     */
-    public $SingleTo = false;
-
-    /**
-     * Storage for addresses when SingleTo is enabled.
-     *
-     * @var array
-     */
-    protected $SingleToArray = [];
-
-    /**
-     * Whether to generate VERP addresses on send.
-     * Only applicable when sending via SMTP.
-     *
-     * @see https://en.wikipedia.org/wiki/Variable_envelope_return_path
-     * @see http://www.postfix.org/VERP_README.html Postfix VERP info
-     *
-     * @var bool
-     */
-    public $do_verp = false;
-
-    /**
-     * Whether to allow sending messages with an empty body.
-     *
-     * @var bool
-     */
-    public $AllowEmpty = false;
-
-    /**
-     * DKIM selector.
-     *
-     * @var string
-     */
-    public $DKIM_selector = '';
-
-    /**
-     * DKIM Identity.
-     * Usually the email address used as the source of the email.
-     *
-     * @var string
-     */
-    public $DKIM_identity = '';
-
-    /**
-     * DKIM passphrase.
-     * Used if your key is encrypted.
-     *
-     * @var string
-     */
-    public $DKIM_passphrase = '';
-
-    /**
-     * DKIM signing domain name.
-     *
-     * @example 'example.com'
-     *
-     * @var string
-     */
-    public $DKIM_domain = '';
-
-    /**
-     * DKIM private key file path.
-     *
-     * @var string
-     */
-    public $DKIM_private = '';
-
-    /**
-     * DKIM private key string.
-     *
-     * If set, takes precedence over `$DKIM_private`.
-     *
-     * @var string
-     */
-    public $DKIM_private_string = '';
-
-    /**
-     * Callback Action function name.
-     *
-     * The function that handles the result of the send email action.
-     * It is called out by send() for each email sent.
-     *
-     * Value can be any php callable: http://www.php.net/is_callable
-     *
-     * Parameters:
-     *   bool $result        result of the send action
-     *   array   $to            email addresses of the recipients
-     *   array   $cc            cc email addresses
-     *   array   $bcc           bcc email addresses
-     *   string  $subject       the subject
-     *   string  $body          the email body
-     *   string  $from          email address of sender
-     *   string  $extra         extra information of possible use
-     *                          "smtp_transaction_id' => last smtp transaction id
-     *
-     * @var string
-     */
-    public $action_function = '';
-
-    /**
-     * What to put in the X-Mailer header.
-     * Options: An empty string for PHPMailer default, whitespace for none, or a string to use.
-     *
-     * @var string
-     */
-    public $XMailer = '';
-
-    /**
-     * Which validator to use by default when validating email addresses.
-     * May be a callable to inject your own validator, but there are several built-in validators.
-     * The default validator uses PHP's FILTER_VALIDATE_EMAIL filter_var option.
-     *
-     * @see PHPMailer::validateAddress()
-     *
-     * @var string|callable
-     */
-    public static $validator = 'php';
-
-    /**
-     * An instance of the SMTP sender class.
-     *
-     * @var SMTP
-     */
-    protected $smtp = null;
-
-    /**
-     * The array of 'to' names and addresses.
-     *
-     * @var array
-     */
-    protected $to = [];
-
-    /**
-     * The array of 'cc' names and addresses.
-     *
-     * @var array
-     */
-    protected $cc = [];
-
-    /**
-     * The array of 'bcc' names and addresses.
-     *
-     * @var array
-     */
-    protected $bcc = [];
-
-    /**
-     * The array of reply-to names and addresses.
-     *
-     * @var array
-     */
-    protected $ReplyTo = [];
-
-    /**
-     * An array of all kinds of addresses.
-     * Includes all of $to, $cc, $bcc.
-     *
-     * @see PHPMailer::$to
-     * @see PHPMailer::$cc
-     * @see PHPMailer::$bcc
-     *
-     * @var array
-     */
-    protected $all_recipients = [];
-
-    /**
-     * An array of names and addresses queued for validation.
-     * In send(), valid and non duplicate entries are moved to $all_recipients
-     * and one of $to, $cc, or $bcc.
-     * This array is used only for addresses with IDN.
-     *
-     * @see PHPMailer::$to
-     * @see PHPMailer::$cc
-     * @see PHPMailer::$bcc
-     * @see PHPMailer::$all_recipients
-     *
-     * @var array
-     */
-    protected $RecipientsQueue = [];
-
-    /**
-     * An array of reply-to names and addresses queued for validation.
-     * In send(), valid and non duplicate entries are moved to $ReplyTo.
-     * This array is used only for addresses with IDN.
-     *
-     * @see PHPMailer::$ReplyTo
-     *
-     * @var array
-     */
-    protected $ReplyToQueue = [];
-
-    /**
-     * The array of attachments.
-     *
-     * @var array
-     */
-    protected $attachment = [];
-
-    /**
-     * The array of custom headers.
-     *
-     * @var array
-     */
-    protected $CustomHeader = [];
-
-    /**
-     * The most recent Message-ID (including angular brackets).
-     *
-     * @var string
-     */
-    protected $lastMessageID = '';
-
-    /**
-     * The message's MIME type.
-     *
-     * @var string
-     */
-    protected $message_type = '';
-
-    /**
-     * The array of MIME boundary strings.
-     *
-     * @var array
-     */
-    protected $boundary = [];
-
-    /**
-     * The array of available languages.
-     *
-     * @var array
-     */
-    protected $language = [];
-
-    /**
-     * The number of errors encountered.
-     *
-     * @var int
-     */
-    protected $error_count = 0;
-
-    /**
-     * The S/MIME certificate file path.
-     *
-     * @var string
-     */
-    protected $sign_cert_file = '';
-
-    /**
-     * The S/MIME key file path.
-     *
-     * @var string
-     */
-    protected $sign_key_file = '';
-
-    /**
-     * The optional S/MIME extra certificates ("CA Chain") file path.
-     *
-     * @var string
-     */
-    protected $sign_extracerts_file = '';
-
-    /**
-     * The S/MIME password for the key.
-     * Used only if the key is encrypted.
-     *
-     * @var string
-     */
-    protected $sign_key_pass = '';
-
-    /**
-     * Whether to throw exceptions for errors.
-     *
-     * @var bool
-     */
-    protected $exceptions = false;
-
-    /**
-     * Unique ID used for message ID and boundaries.
-     *
-     * @var string
-     */
-    protected $uniqueid = '';
-
-    /**
-     * The PHPMailer Version number.
-     *
-     * @var string
-     */
-    const VERSION = '6.0.1';
-
-    /**
-     * Error severity: message only, continue processing.
-     *
-     * @var int
-     */
-    const STOP_MESSAGE = 0;
-
-    /**
-     * Error severity: message, likely ok to continue processing.
-     *
-     * @var int
-     */
-    const STOP_CONTINUE = 1;
-
-    /**
-     * Error severity: message, plus full stop, critical error reached.
-     *
-     * @var int
-     */
-    const STOP_CRITICAL = 2;
-
-    /**
-     * SMTP RFC standard line ending.
-     *
-     * @var string
-     */
-    protected static $LE = "\r\n";
-
-    /**
-     * The maximum line length allowed by RFC 2822 section 2.1.1.
-     *
-     * @var int
-     */
-    const MAX_LINE_LENGTH = 998;
-
-    /**
-     * The lower maximum line length allowed by RFC 2822 section 2.1.1.
-     *
-     * @var int
-     */
-    const STD_LINE_LENGTH = 78;
-
-    /**
-     * Constructor.
-     *
-     * @param bool $exceptions Should we throw external exceptions?
-     */
-    public function __construct($exceptions = null)
-    {
-        if (null !== $exceptions) {
-            $this->exceptions = (bool) $exceptions;
-        }
-        //Pick an appropriate debug output format automatically
-        $this->Debugoutput = (strpos(PHP_SAPI, 'cli') !== false ? 'echo' : 'html');
-    }
-
-    /**
-     * Destructor.
-     */
-    public function __destruct()
-    {
-        //Close any open SMTP connection nicely
-        $this->smtpClose();
-    }
-
-    /**
-     * Call mail() in a safe_mode-aware fashion.
-     * Also, unless sendmail_path points to sendmail (or something that
-     * claims to be sendmail), don't pass params (not a perfect fix,
-     * but it will do).
-     *
-     * @param string      $to      To
-     * @param string      $subject Subject
-     * @param string      $body    Message Body
-     * @param string      $header  Additional Header(s)
-     * @param string|null $params  Params
-     *
-     * @return bool
-     */
-    private function mailPassthru($to, $subject, $body, $header, $params)
-    {
-        //Check overloading of mail function to avoid double-encoding
-        if (ini_get('mbstring.func_overload') & 1) {
-            $subject = $this->secureHeader($subject);
-        } else {
-            $subject = $this->encodeHeader($this->secureHeader($subject));
-        }
-        //Calling mail() with null params breaks
-        if (!$this->UseSendmailOptions or null === $params) {
-            $result = @mail($to, $subject, $body, $header);
-        } else {
-            $result = @mail($to, $subject, $body, $header, $params);
-        }
-
-        return $result;
-    }
-
-    /**
-     * Output debugging info via user-defined method.
-     * Only generates output if SMTP debug output is enabled (@see SMTP::$do_debug).
-     *
-     * @see PHPMailer::$Debugoutput
-     * @see PHPMailer::$SMTPDebug
-     *
-     * @param string $str
-     */
-    protected function edebug($str)
-    {
-        if ($this->SMTPDebug <= 0) {
-            return;
-        }
-        //Is this a PSR-3 logger?
-        if (is_a($this->Debugoutput, 'Psr\Log\LoggerInterface')) {
-            $this->Debugoutput->debug($str);
-
-            return;
-        }
-        //Avoid clash with built-in function names
-        if (!in_array($this->Debugoutput, ['error_log', 'html', 'echo']) and is_callable($this->Debugoutput)) {
-            call_user_func($this->Debugoutput, $str, $this->SMTPDebug);
-
-            return;
-        }
-        switch ($this->Debugoutput) {
-            case 'error_log':
-                //Don't output, just log
-                error_log($str);
-                break;
-            case 'html':
-                //Cleans up output a bit for a better looking, HTML-safe output
-                echo htmlentities(
-                    preg_replace('/[\r\n]+/', '', $str),
-                    ENT_QUOTES,
-                    'UTF-8'
-                ), "<br>\n";
-                break;
-            case 'echo':
-            default:
-                //Normalize line breaks
-                $str = preg_replace('/\r\n|\r/ms', "\n", $str);
-                echo gmdate('Y-m-d H:i:s'),
-                "\t",
-                    //Trim trailing space
-                trim(
-                //Indent for readability, except for trailing break
-                    str_replace(
-                        "\n",
-                        "\n                   \t                  ",
-                        trim($str)
-                    )
-                ),
-                "\n";
-        }
-    }
-
-    /**
-     * Sets message type to HTML or plain.
-     *
-     * @param bool $isHtml True for HTML mode
-     */
-    public function isHTML($isHtml = true)
-    {
-        if ($isHtml) {
-            $this->ContentType = 'text/html';
-        } else {
-            $this->ContentType = 'text/plain';
-        }
-    }
-
-    /**
-     * Send messages using SMTP.
-     */
-    public function isSMTP()
-    {
-        $this->Mailer = 'smtp';
-    }
-
-    /**
-     * Send messages using PHP's mail() function.
-     */
-    public function isMail()
-    {
-        $this->Mailer = 'mail';
-    }
-
-    /**
-     * Send messages using $Sendmail.
-     */
-    public function isSendmail()
-    {
-        $ini_sendmail_path = ini_get('sendmail_path');
-
-        if (!stristr($ini_sendmail_path, 'sendmail')) {
-            $this->Sendmail = '/usr/sbin/sendmail';
-        } else {
-            $this->Sendmail = $ini_sendmail_path;
-        }
-        $this->Mailer = 'sendmail';
-    }
-
-    /**
-     * Send messages using qmail.
-     */
-    public function isQmail()
-    {
-        $ini_sendmail_path = ini_get('sendmail_path');
-
-        if (!stristr($ini_sendmail_path, 'qmail')) {
-            $this->Sendmail = '/var/qmail/bin/qmail-inject';
-        } else {
-            $this->Sendmail = $ini_sendmail_path;
-        }
-        $this->Mailer = 'qmail';
-    }
-
-    /**
-     * Add a "To" address.
-     *
-     * @param string $address The email address to send to
-     * @param string $name
-     *
-     * @return bool true on success, false if address already used or invalid in some way
-     */
-    public function addAddress($address, $name = '')
-    {
-        return $this->addOrEnqueueAnAddress('to', $address, $name);
-    }
-
-    /**
-     * Add a "CC" address.
-     *
-     * @param string $address The email address to send to
-     * @param string $name
-     *
-     * @return bool true on success, false if address already used or invalid in some way
-     */
-    public function addCC($address, $name = '')
-    {
-        return $this->addOrEnqueueAnAddress('cc', $address, $name);
-    }
-
-    /**
-     * Add a "BCC" address.
-     *
-     * @param string $address The email address to send to
-     * @param string $name
-     *
-     * @return bool true on success, false if address already used or invalid in some way
-     */
-    public function addBCC($address, $name = '')
-    {
-        return $this->addOrEnqueueAnAddress('bcc', $address, $name);
-    }
-
-    /**
-     * Add a "Reply-To" address.
-     *
-     * @param string $address The email address to reply to
-     * @param string $name
-     *
-     * @return bool true on success, false if address already used or invalid in some way
-     */
-    public function addReplyTo($address, $name = '')
-    {
-        return $this->addOrEnqueueAnAddress('Reply-To', $address, $name);
-    }
-
-    /**
-     * Add an address to one of the recipient arrays or to the ReplyTo array. Because PHPMailer
-     * can't validate addresses with an IDN without knowing the PHPMailer::$CharSet (that can still
-     * be modified after calling this function), addition of such addresses is delayed until send().
-     * Addresses that have been added already return false, but do not throw exceptions.
-     *
-     * @param string $kind    One of 'to', 'cc', 'bcc', or 'ReplyTo'
-     * @param string $address The email address to send, resp. to reply to
-     * @param string $name
-     *
-     * @throws Exception
-     *
-     * @return bool true on success, false if address already used or invalid in some way
-     */
-    protected function addOrEnqueueAnAddress($kind, $address, $name)
-    {
-        $address = trim($address);
-        $name = trim(preg_replace('/[\r\n]+/', '', $name)); //Strip breaks and trim
-        $pos = strrpos($address, '@');
-        if (false === $pos) {
-            // At-sign is missing.
-            $error_message = $this->lang('invalid_address') . " (addAnAddress $kind): $address";
-            $this->setError($error_message);
-            $this->edebug($error_message);
-            if ($this->exceptions) {
-                throw new Exception($error_message);
-            }
-
-            return false;
-        }
-        $params = [$kind, $address, $name];
-        // Enqueue addresses with IDN until we know the PHPMailer::$CharSet.
-        if ($this->has8bitChars(substr($address, ++$pos)) and $this->idnSupported()) {
-            if ('Reply-To' != $kind) {
-                if (!array_key_exists($address, $this->RecipientsQueue)) {
-                    $this->RecipientsQueue[$address] = $params;
-
-                    return true;
-                }
-            } else {
-                if (!array_key_exists($address, $this->ReplyToQueue)) {
-                    $this->ReplyToQueue[$address] = $params;
-
-                    return true;
-                }
-            }
-
-            return false;
-        }
-
-        // Immediately add standard addresses without IDN.
-        return call_user_func_array([$this, 'addAnAddress'], $params);
-    }
-
-    /**
-     * Add an address to one of the recipient arrays or to the ReplyTo array.
-     * Addresses that have been added already return false, but do not throw exceptions.
-     *
-     * @param string $kind    One of 'to', 'cc', 'bcc', or 'ReplyTo'
-     * @param string $address The email address to send, resp. to reply to
-     * @param string $name
-     *
-     * @throws Exception
-     *
-     * @return bool true on success, false if address already used or invalid in some way
-     */
-    protected function addAnAddress($kind, $address, $name = '')
-    {
-        if (!in_array($kind, ['to', 'cc', 'bcc', 'Reply-To'])) {
-            $error_message = $this->lang('Invalid recipient kind: ') . $kind;
-            $this->setError($error_message);
-            $this->edebug($error_message);
-            if ($this->exceptions) {
-                throw new Exception($error_message);
-            }
-
-            return false;
-        }
-        if (!static::validateAddress($address)) {
-            $error_message = $this->lang('invalid_address') . " (addAnAddress $kind): $address";
-            $this->setError($error_message);
-            $this->edebug($error_message);
-            if ($this->exceptions) {
-                throw new Exception($error_message);
-            }
-
-            return false;
-        }
-        if ('Reply-To' != $kind) {
-            if (!array_key_exists(strtolower($address), $this->all_recipients)) {
-                array_push($this->$kind, [$address, $name]);
-                $this->all_recipients[strtolower($address)] = true;
-
-                return true;
-            }
-        } else {
-            if (!array_key_exists(strtolower($address), $this->ReplyTo)) {
-                $this->ReplyTo[strtolower($address)] = [$address, $name];
-
-                return true;
-            }
-        }
-
-        return false;
-    }
-
-    /**
-     * Parse and validate a string containing one or more RFC822-style comma-separated email addresses
-     * of the form "display name <address>" into an array of name/address pairs.
-     * Uses the imap_rfc822_parse_adrlist function if the IMAP extension is available.
-     * Note that quotes in the name part are removed.
-     *
-     * @see    http://www.andrew.cmu.edu/user/agreen1/testing/mrbs/web/Mail/RFC822.php A more careful implementation
-     *
-     * @param string $addrstr The address list string
-     * @param bool   $useimap Whether to use the IMAP extension to parse the list
-     *
-     * @return array
-     */
-    public static function parseAddresses($addrstr, $useimap = true)
-    {
-        $addresses = [];
-        if ($useimap and function_exists('imap_rfc822_parse_adrlist')) {
-            //Use this built-in parser if it's available
-            $list = imap_rfc822_parse_adrlist($addrstr, '');
-            foreach ($list as $address) {
-                if ('.SYNTAX-ERROR.' != $address->host) {
-                    if (static::validateAddress($address->mailbox . '@' . $address->host)) {
-                        $addresses[] = [
-                            'name' => (property_exists($address, 'personal') ? $address->personal : ''),
-                            'address' => $address->mailbox . '@' . $address->host,
-                        ];
-                    }
-                }
-            }
-        } else {
-            //Use this simpler parser
-            $list = explode(',', $addrstr);
-            foreach ($list as $address) {
-                $address = trim($address);
-                //Is there a separate name part?
-                if (strpos($address, '<') === false) {
-                    //No separate name, just use the whole thing
-                    if (static::validateAddress($address)) {
-                        $addresses[] = [
-                            'name' => '',
-                            'address' => $address,
-                        ];
-                    }
-                } else {
-                    list($name, $email) = explode('<', $address);
-                    $email = trim(str_replace('>', '', $email));
-                    if (static::validateAddress($email)) {
-                        $addresses[] = [
-                            'name' => trim(str_replace(['"', "'"], '', $name)),
-                            'address' => $email,
-                        ];
-                    }
-                }
-            }
-        }
-
-        return $addresses;
-    }
-
-    /**
-     * Set the From and FromName properties.
-     *
-     * @param string $address
-     * @param string $name
-     * @param bool   $auto    Whether to also set the Sender address, defaults to true
-     *
-     * @throws Exception
-     *
-     * @return bool
-     */
-    public function setFrom($address, $name = '', $auto = true)
-    {
-        $address = trim($address);
-        $name = trim(preg_replace('/[\r\n]+/', '', $name)); //Strip breaks and trim
-        // Don't validate now addresses with IDN. Will be done in send().
-        $pos = strrpos($address, '@');
-        if (false === $pos or
-            (!$this->has8bitChars(substr($address, ++$pos)) or !$this->idnSupported()) and
-            !static::validateAddress($address)) {
-            $error_message = $this->lang('invalid_address') . " (setFrom) $address";
-            $this->setError($error_message);
-            $this->edebug($error_message);
-            if ($this->exceptions) {
-                throw new Exception($error_message);
-            }
-
-            return false;
-        }
-        $this->From = $address;
-        $this->FromName = $name;
-        if ($auto) {
-            if (empty($this->Sender)) {
-                $this->Sender = $address;
-            }
-        }
-
-        return true;
-    }
-
-    /**
-     * Return the Message-ID header of the last email.
-     * Technically this is the value from the last time the headers were created,
-     * but it's also the message ID of the last sent message except in
-     * pathological cases.
-     *
-     * @return string
-     */
-    public function getLastMessageID()
-    {
-        return $this->lastMessageID;
-    }
-
-    /**
-     * Check that a string looks like an email address.
-     * Validation patterns supported:
-     * * `auto` Pick best pattern automatically;
-     * * `pcre8` Use the squiloople.com pattern, requires PCRE > 8.0;
-     * * `pcre` Use old PCRE implementation;
-     * * `php` Use PHP built-in FILTER_VALIDATE_EMAIL;
-     * * `html5` Use the pattern given by the HTML5 spec for 'email' type form input elements.
-     * * `noregex` Don't use a regex: super fast, really dumb.
-     * Alternatively you may pass in a callable to inject your own validator, for example:
-     *
-     * ```php
-     * PHPMailer::validateAddress('user@example.com', function($address) {
-     *     return (strpos($address, '@') !== false);
-     * });
-     * ```
-     *
-     * You can also set the PHPMailer::$validator static to a callable, allowing built-in methods to use your validator.
-     *
-     * @param string          $address       The email address to check
-     * @param string|callable $patternselect Which pattern to use
-     *
-     * @return bool
-     */
-    public static function validateAddress($address, $patternselect = null)
-    {
-        if (null === $patternselect) {
-            $patternselect = static::$validator;
-        }
-        if (is_callable($patternselect)) {
-            return call_user_func($patternselect, $address);
-        }
-        //Reject line breaks in addresses; it's valid RFC5322, but not RFC5321
-        if (strpos($address, "\n") !== false or strpos($address, "\r") !== false) {
-            return false;
-        }
-        switch ($patternselect) {
-            case 'pcre': //Kept for BC
-            case 'pcre8':
-                /*
+	/**
+	 * Email priority.
+	 * Options: null (default), 1 = High, 3 = Normal, 5 = low.
+	 * When null, the header is not set at all.
+	 *
+	 * @var int
+	 */
+	public $Priority = null;
+
+	/**
+	 * The character set of the message.
+	 *
+	 * @var string
+	 */
+	public $CharSet = 'iso-8859-1';
+
+	/**
+	 * The MIME Content-type of the message.
+	 *
+	 * @var string
+	 */
+	public $ContentType = 'text/plain';
+
+	/**
+	 * The message encoding.
+	 * Options: "8bit", "7bit", "binary", "base64", and "quoted-printable".
+	 *
+	 * @var string
+	 */
+	public $Encoding = '8bit';
+
+	/**
+	 * Holds the most recent mailer error message.
+	 *
+	 * @var string
+	 */
+	public $ErrorInfo = '';
+
+	/**
+	 * The From email address for the message.
+	 *
+	 * @var string
+	 */
+	public $From = 'root@localhost';
+
+	/**
+	 * The From name of the message.
+	 *
+	 * @var string
+	 */
+	public $FromName = 'Root User';
+
+	/**
+	 * The envelope sender of the message.
+	 * This will usually be turned into a Return-Path header by the receiver,
+	 * and is the address that bounces will be sent to.
+	 * If not empty, will be passed via `-f` to sendmail or as the 'MAIL FROM' value over SMTP.
+	 *
+	 * @var string
+	 */
+	public $Sender = '';
+
+	/**
+	 * The Subject of the message.
+	 *
+	 * @var string
+	 */
+	public $Subject = '';
+
+	/**
+	 * An HTML or plain text message body.
+	 * If HTML then call isHTML(true).
+	 *
+	 * @var string
+	 */
+	public $Body = '';
+
+	/**
+	 * The plain-text message body.
+	 * This body can be read by mail clients that do not have HTML email
+	 * capability such as mutt & Eudora.
+	 * Clients that can read HTML will view the normal Body.
+	 *
+	 * @var string
+	 */
+	public $AltBody = '';
+
+	/**
+	 * An iCal message part body.
+	 * Only supported in simple alt or alt_inline message types
+	 * To generate iCal event structures, use classes like EasyPeasyICS or iCalcreator.
+	 *
+	 * @see http://sprain.ch/blog/downloads/php-class-easypeasyics-create-ical-files-with-php/
+	 * @see http://kigkonsult.se/iCalcreator/
+	 *
+	 * @var string
+	 */
+	public $Ical = '';
+
+	/**
+	 * The complete compiled MIME message body.
+	 *
+	 * @var string
+	 */
+	protected $MIMEBody = '';
+
+	/**
+	 * The complete compiled MIME message headers.
+	 *
+	 * @var string
+	 */
+	protected $MIMEHeader = '';
+
+	/**
+	 * Extra headers that createHeader() doesn't fold in.
+	 *
+	 * @var string
+	 */
+	protected $mailHeader = '';
+
+	/**
+	 * Word-wrap the message body to this number of chars.
+	 * Set to 0 to not wrap. A useful value here is 78, for RFC2822 section 2.1.1 compliance.
+	 *
+	 * @see static::STD_LINE_LENGTH
+	 *
+	 * @var int
+	 */
+	public $WordWrap = 0;
+
+	/**
+	 * Which method to use to send mail.
+	 * Options: "mail", "sendmail", or "smtp".
+	 *
+	 * @var string
+	 */
+	public $Mailer = 'mail';
+
+	/**
+	 * The path to the sendmail program.
+	 *
+	 * @var string
+	 */
+	public $Sendmail = '/usr/sbin/sendmail';
+
+	/**
+	 * Whether mail() uses a fully sendmail-compatible MTA.
+	 * One which supports sendmail's "-oi -f" options.
+	 *
+	 * @var bool
+	 */
+	public $UseSendmailOptions = true;
+
+	/**
+	 * The email address that a reading confirmation should be sent to, also known as read receipt.
+	 *
+	 * @var string
+	 */
+	public $ConfirmReadingTo = '';
+
+	/**
+	 * The hostname to use in the Message-ID header and as default HELO string.
+	 * If empty, PHPMailer attempts to find one with, in order,
+	 * $_SERVER['SERVER_NAME'], gethostname(), php_uname('n'), or the value
+	 * 'localhost.localdomain'.
+	 *
+	 * @var string
+	 */
+	public $Hostname = '';
+
+	/**
+	 * An ID to be used in the Message-ID header.
+	 * If empty, a unique id will be generated.
+	 * You can set your own, but it must be in the format "<id@domain>",
+	 * as defined in RFC5322 section 3.6.4 or it will be ignored.
+	 *
+	 * @see https://tools.ietf.org/html/rfc5322#section-3.6.4
+	 *
+	 * @var string
+	 */
+	public $MessageID = '';
+
+	/**
+	 * The message Date to be used in the Date header.
+	 * If empty, the current date will be added.
+	 *
+	 * @var string
+	 */
+	public $MessageDate = '';
+
+	/**
+	 * SMTP hosts.
+	 * Either a single hostname or multiple semicolon-delimited hostnames.
+	 * You can also specify a different port
+	 * for each host by using this format: [hostname:port]
+	 * (e.g. "smtp1.example.com:25;smtp2.example.com").
+	 * You can also specify encryption type, for example:
+	 * (e.g. "tls://smtp1.example.com:587;ssl://smtp2.example.com:465").
+	 * Hosts will be tried in order.
+	 *
+	 * @var string
+	 */
+	public $Host = 'localhost';
+
+	/**
+	 * The default SMTP server port.
+	 *
+	 * @var int
+	 */
+	public $Port = 25;
+
+	/**
+	 * The SMTP HELO of the message.
+	 * Default is $Hostname. If $Hostname is empty, PHPMailer attempts to find
+	 * one with the same method described above for $Hostname.
+	 *
+	 * @see PHPMailer::$Hostname
+	 *
+	 * @var string
+	 */
+	public $Helo = '';
+
+	/**
+	 * What kind of encryption to use on the SMTP connection.
+	 * Options: '', 'ssl' or 'tls'.
+	 *
+	 * @var string
+	 */
+	public $SMTPSecure = '';
+
+	/**
+	 * Whether to enable TLS encryption automatically if a server supports it,
+	 * even if `SMTPSecure` is not set to 'tls'.
+	 * Be aware that in PHP >= 5.6 this requires that the server's certificates are valid.
+	 *
+	 * @var bool
+	 */
+	public $SMTPAutoTLS = true;
+
+	/**
+	 * Whether to use SMTP Login.
+	 * Uses the Username and Password properties.
+	 *
+	 * @see PHPMailer::$Username
+	 * @see PHPMailer::$Password
+	 *
+	 * @var bool
+	 */
+	public $SMTPAuth = false;
+
+	/**
+	 * Options array passed to stream_context_create when connecting via SMTP.
+	 *
+	 * @var array
+	 */
+	public $SMTPOptions = [];
+
+	/**
+	 * SMTP username.
+	 *
+	 * @var string
+	 */
+	public $Username = '';
+
+	/**
+	 * SMTP password.
+	 *
+	 * @var string
+	 */
+	public $Password = '';
+
+	/**
+	 * SMTP auth type.
+	 * Options are CRAM-MD5, LOGIN, PLAIN, XOAUTH2, attempted in that order if not specified.
+	 *
+	 * @var string
+	 */
+	public $AuthType = '';
+
+	/**
+	 * An instance of the PHPMailer OAuth class.
+	 *
+	 * @var OAuth
+	 */
+	protected $oauth = null;
+
+	/**
+	 * The SMTP server timeout in seconds.
+	 * Default of 5 minutes (300sec) is from RFC2821 section 4.5.3.2.
+	 *
+	 * @var int
+	 */
+	public $Timeout = 300;
+
+	/**
+	 * SMTP class debug output mode.
+	 * Debug output level.
+	 * Options:
+	 * * `0` No output
+	 * * `1` Commands
+	 * * `2` Data and commands
+	 * * `3` As 2 plus connection status
+	 * * `4` Low-level data output.
+	 *
+	 * @see SMTP::$do_debug
+	 *
+	 * @var int
+	 */
+	public $SMTPDebug = 0;
+
+	/**
+	 * How to handle debug output.
+	 * Options:
+	 * * `echo` Output plain-text as-is, appropriate for CLI
+	 * * `html` Output escaped, line breaks converted to `<br>`, appropriate for browser output
+	 * * `error_log` Output to error log as configured in php.ini
+	 * By default PHPMailer will use `echo` if run from a `cli` or `cli-server` SAPI, `html` otherwise.
+	 * Alternatively, you can provide a callable expecting two params: a message string and the debug level:
+	 *
+	 * ```php
+	 * $mail->Debugoutput = function($str, $level) {echo "debug level $level; message: $str";};
+	 * ```
+	 *
+	 * Alternatively, you can pass in an instance of a PSR-3 compatible logger, though only `debug`
+	 * level output is used:
+	 *
+	 * ```php
+	 * $mail->Debugoutput = new myPsr3Logger;
+	 * ```
+	 *
+	 * @see SMTP::$Debugoutput
+	 *
+	 * @var string|callable|\Psr\Log\LoggerInterface
+	 */
+	public $Debugoutput = 'echo';
+
+	/**
+	 * Whether to keep SMTP connection open after each message.
+	 * If this is set to true then to close the connection
+	 * requires an explicit call to smtpClose().
+	 *
+	 * @var bool
+	 */
+	public $SMTPKeepAlive = false;
+
+	/**
+	 * Whether to split multiple to addresses into multiple messages
+	 * or send them all in one message.
+	 * Only supported in `mail` and `sendmail` transports, not in SMTP.
+	 *
+	 * @var bool
+	 */
+	public $SingleTo = false;
+
+	/**
+	 * Storage for addresses when SingleTo is enabled.
+	 *
+	 * @var array
+	 */
+	protected $SingleToArray = [];
+
+	/**
+	 * Whether to generate VERP addresses on send.
+	 * Only applicable when sending via SMTP.
+	 *
+	 * @see https://en.wikipedia.org/wiki/Variable_envelope_return_path
+	 * @see http://www.postfix.org/VERP_README.html Postfix VERP info
+	 *
+	 * @var bool
+	 */
+	public $do_verp = false;
+
+	/**
+	 * Whether to allow sending messages with an empty body.
+	 *
+	 * @var bool
+	 */
+	public $AllowEmpty = false;
+
+	/**
+	 * DKIM selector.
+	 *
+	 * @var string
+	 */
+	public $DKIM_selector = '';
+
+	/**
+	 * DKIM Identity.
+	 * Usually the email address used as the source of the email.
+	 *
+	 * @var string
+	 */
+	public $DKIM_identity = '';
+
+	/**
+	 * DKIM passphrase.
+	 * Used if your key is encrypted.
+	 *
+	 * @var string
+	 */
+	public $DKIM_passphrase = '';
+
+	/**
+	 * DKIM signing domain name.
+	 *
+	 * @example 'example.com'
+	 *
+	 * @var string
+	 */
+	public $DKIM_domain = '';
+
+	/**
+	 * DKIM private key file path.
+	 *
+	 * @var string
+	 */
+	public $DKIM_private = '';
+
+	/**
+	 * DKIM private key string.
+	 *
+	 * If set, takes precedence over `$DKIM_private`.
+	 *
+	 * @var string
+	 */
+	public $DKIM_private_string = '';
+
+	/**
+	 * Callback Action function name.
+	 *
+	 * The function that handles the result of the send email action.
+	 * It is called out by send() for each email sent.
+	 *
+	 * Value can be any php callable: http://www.php.net/is_callable
+	 *
+	 * Parameters:
+	 *   bool $result        result of the send action
+	 *   array   $to            email addresses of the recipients
+	 *   array   $cc            cc email addresses
+	 *   array   $bcc           bcc email addresses
+	 *   string  $subject       the subject
+	 *   string  $body          the email body
+	 *   string  $from          email address of sender
+	 *   string  $extra         extra information of possible use
+	 *                          "smtp_transaction_id' => last smtp transaction id
+	 *
+	 * @var string
+	 */
+	public $action_function = '';
+
+	/**
+	 * What to put in the X-Mailer header.
+	 * Options: An empty string for PHPMailer default, whitespace for none, or a string to use.
+	 *
+	 * @var string
+	 */
+	public $XMailer = '';
+
+	/**
+	 * Which validator to use by default when validating email addresses.
+	 * May be a callable to inject your own validator, but there are several built-in validators.
+	 * The default validator uses PHP's FILTER_VALIDATE_EMAIL filter_var option.
+	 *
+	 * @see PHPMailer::validateAddress()
+	 *
+	 * @var string|callable
+	 */
+	public static $validator = 'php';
+
+	/**
+	 * An instance of the SMTP sender class.
+	 *
+	 * @var SMTP
+	 */
+	protected $smtp = null;
+
+	/**
+	 * The array of 'to' names and addresses.
+	 *
+	 * @var array
+	 */
+	protected $to = [];
+
+	/**
+	 * The array of 'cc' names and addresses.
+	 *
+	 * @var array
+	 */
+	protected $cc = [];
+
+	/**
+	 * The array of 'bcc' names and addresses.
+	 *
+	 * @var array
+	 */
+	protected $bcc = [];
+
+	/**
+	 * The array of reply-to names and addresses.
+	 *
+	 * @var array
+	 */
+	protected $ReplyTo = [];
+
+	/**
+	 * An array of all kinds of addresses.
+	 * Includes all of $to, $cc, $bcc.
+	 *
+	 * @see PHPMailer::$to
+	 * @see PHPMailer::$cc
+	 * @see PHPMailer::$bcc
+	 *
+	 * @var array
+	 */
+	protected $all_recipients = [];
+
+	/**
+	 * An array of names and addresses queued for validation.
+	 * In send(), valid and non duplicate entries are moved to $all_recipients
+	 * and one of $to, $cc, or $bcc.
+	 * This array is used only for addresses with IDN.
+	 *
+	 * @see PHPMailer::$to
+	 * @see PHPMailer::$cc
+	 * @see PHPMailer::$bcc
+	 * @see PHPMailer::$all_recipients
+	 *
+	 * @var array
+	 */
+	protected $RecipientsQueue = [];
+
+	/**
+	 * An array of reply-to names and addresses queued for validation.
+	 * In send(), valid and non duplicate entries are moved to $ReplyTo.
+	 * This array is used only for addresses with IDN.
+	 *
+	 * @see PHPMailer::$ReplyTo
+	 *
+	 * @var array
+	 */
+	protected $ReplyToQueue = [];
+
+	/**
+	 * The array of attachments.
+	 *
+	 * @var array
+	 */
+	protected $attachment = [];
+
+	/**
+	 * The array of custom headers.
+	 *
+	 * @var array
+	 */
+	protected $CustomHeader = [];
+
+	/**
+	 * The most recent Message-ID (including angular brackets).
+	 *
+	 * @var string
+	 */
+	protected $lastMessageID = '';
+
+	/**
+	 * The message's MIME type.
+	 *
+	 * @var string
+	 */
+	protected $message_type = '';
+
+	/**
+	 * The array of MIME boundary strings.
+	 *
+	 * @var array
+	 */
+	protected $boundary = [];
+
+	/**
+	 * The array of available languages.
+	 *
+	 * @var array
+	 */
+	protected $language = [];
+
+	/**
+	 * The number of errors encountered.
+	 *
+	 * @var int
+	 */
+	protected $error_count = 0;
+
+	/**
+	 * The S/MIME certificate file path.
+	 *
+	 * @var string
+	 */
+	protected $sign_cert_file = '';
+
+	/**
+	 * The S/MIME key file path.
+	 *
+	 * @var string
+	 */
+	protected $sign_key_file = '';
+
+	/**
+	 * The optional S/MIME extra certificates ("CA Chain") file path.
+	 *
+	 * @var string
+	 */
+	protected $sign_extracerts_file = '';
+
+	/**
+	 * The S/MIME password for the key.
+	 * Used only if the key is encrypted.
+	 *
+	 * @var string
+	 */
+	protected $sign_key_pass = '';
+
+	/**
+	 * Whether to throw exceptions for errors.
+	 *
+	 * @var bool
+	 */
+	protected $exceptions = false;
+
+	/**
+	 * Unique ID used for message ID and boundaries.
+	 *
+	 * @var string
+	 */
+	protected $uniqueid = '';
+
+	/**
+	 * The PHPMailer Version number.
+	 *
+	 * @var string
+	 */
+	const VERSION = '6.0.1';
+
+	/**
+	 * Error severity: message only, continue processing.
+	 *
+	 * @var int
+	 */
+	const STOP_MESSAGE = 0;
+
+	/**
+	 * Error severity: message, likely ok to continue processing.
+	 *
+	 * @var int
+	 */
+	const STOP_CONTINUE = 1;
+
+	/**
+	 * Error severity: message, plus full stop, critical error reached.
+	 *
+	 * @var int
+	 */
+	const STOP_CRITICAL = 2;
+
+	/**
+	 * SMTP RFC standard line ending.
+	 *
+	 * @var string
+	 */
+	protected static $LE = "\r\n";
+
+	/**
+	 * The maximum line length allowed by RFC 2822 section 2.1.1.
+	 *
+	 * @var int
+	 */
+	const MAX_LINE_LENGTH = 998;
+
+	/**
+	 * The lower maximum line length allowed by RFC 2822 section 2.1.1.
+	 *
+	 * @var int
+	 */
+	const STD_LINE_LENGTH = 78;
+
+	/**
+	 * Constructor.
+	 *
+	 * @param bool $exceptions Should we throw external exceptions?
+	 */
+	public function __construct($exceptions = null)
+	{
+		if (null !== $exceptions) {
+			$this->exceptions = (bool) $exceptions;
+		}
+		//Pick an appropriate debug output format automatically
+		$this->Debugoutput = (strpos(PHP_SAPI, 'cli') !== false ? 'echo' : 'html');
+	}
+
+	/**
+	 * Destructor.
+	 */
+	public function __destruct()
+	{
+		//Close any open SMTP connection nicely
+		$this->smtpClose();
+	}
+
+	/**
+	 * Call mail() in a safe_mode-aware fashion.
+	 * Also, unless sendmail_path points to sendmail (or something that
+	 * claims to be sendmail), don't pass params (not a perfect fix,
+	 * but it will do).
+	 *
+	 * @param string      $to      To
+	 * @param string      $subject Subject
+	 * @param string      $body    Message Body
+	 * @param string      $header  Additional Header(s)
+	 * @param string|null $params  Params
+	 *
+	 * @return bool
+	 */
+	private function mailPassthru($to, $subject, $body, $header, $params)
+	{
+		//Check overloading of mail function to avoid double-encoding
+		if (ini_get('mbstring.func_overload') & 1) {
+			$subject = $this->secureHeader($subject);
+		} else {
+			$subject = $this->encodeHeader($this->secureHeader($subject));
+		}
+		//Calling mail() with null params breaks
+		if (!$this->UseSendmailOptions or null === $params) {
+			$result = @mail($to, $subject, $body, $header);
+		} else {
+			$result = @mail($to, $subject, $body, $header, $params);
+		}
+
+		return $result;
+	}
+
+	/**
+	 * Output debugging info via user-defined method.
+	 * Only generates output if SMTP debug output is enabled (@see SMTP::$do_debug).
+	 *
+	 * @see PHPMailer::$Debugoutput
+	 * @see PHPMailer::$SMTPDebug
+	 *
+	 * @param string $str
+	 */
+	protected function edebug($str)
+	{
+		if ($this->SMTPDebug <= 0) {
+			return;
+		}
+		//Is this a PSR-3 logger?
+		if (is_a($this->Debugoutput, 'Psr\Log\LoggerInterface')) {
+			$this->Debugoutput->debug($str);
+
+			return;
+		}
+		//Avoid clash with built-in function names
+		if (!in_array($this->Debugoutput, ['error_log', 'html', 'echo']) and is_callable($this->Debugoutput)) {
+			call_user_func($this->Debugoutput, $str, $this->SMTPDebug);
+
+			return;
+		}
+		switch ($this->Debugoutput) {
+			case 'error_log':
+				//Don't output, just log
+				error_log($str);
+				break;
+			case 'html':
+				//Cleans up output a bit for a better looking, HTML-safe output
+				echo htmlentities(
+					preg_replace('/[\r\n]+/', '', $str),
+					ENT_QUOTES,
+					'UTF-8'
+				), "<br>\n";
+				break;
+			case 'echo':
+			default:
+				//Normalize line breaks
+				$str = preg_replace('/\r\n|\r/ms', "\n", $str);
+				echo gmdate('Y-m-d H:i:s'),
+				"\t",
+					//Trim trailing space
+				trim(
+				//Indent for readability, except for trailing break
+					str_replace(
+						"\n",
+						"\n                   \t                  ",
+						trim($str)
+					)
+				),
+				"\n";
+		}
+	}
+
+	/**
+	 * Sets message type to HTML or plain.
+	 *
+	 * @param bool $isHtml True for HTML mode
+	 */
+	public function isHTML($isHtml = true)
+	{
+		if ($isHtml) {
+			$this->ContentType = 'text/html';
+		} else {
+			$this->ContentType = 'text/plain';
+		}
+	}
+
+	/**
+	 * Send messages using SMTP.
+	 */
+	public function isSMTP()
+	{
+		$this->Mailer = 'smtp';
+	}
+
+	/**
+	 * Send messages using PHP's mail() function.
+	 */
+	public function isMail()
+	{
+		$this->Mailer = 'mail';
+	}
+
+	/**
+	 * Send messages using $Sendmail.
+	 */
+	public function isSendmail()
+	{
+		$ini_sendmail_path = ini_get('sendmail_path');
+
+		if (!stristr($ini_sendmail_path, 'sendmail')) {
+			$this->Sendmail = '/usr/sbin/sendmail';
+		} else {
+			$this->Sendmail = $ini_sendmail_path;
+		}
+		$this->Mailer = 'sendmail';
+	}
+
+	/**
+	 * Send messages using qmail.
+	 */
+	public function isQmail()
+	{
+		$ini_sendmail_path = ini_get('sendmail_path');
+
+		if (!stristr($ini_sendmail_path, 'qmail')) {
+			$this->Sendmail = '/var/qmail/bin/qmail-inject';
+		} else {
+			$this->Sendmail = $ini_sendmail_path;
+		}
+		$this->Mailer = 'qmail';
+	}
+
+	/**
+	 * Add a "To" address.
+	 *
+	 * @param string $address The email address to send to
+	 * @param string $name
+	 *
+	 * @return bool true on success, false if address already used or invalid in some way
+	 */
+	public function addAddress($address, $name = '')
+	{
+		return $this->addOrEnqueueAnAddress('to', $address, $name);
+	}
+
+	/**
+	 * Add a "CC" address.
+	 *
+	 * @param string $address The email address to send to
+	 * @param string $name
+	 *
+	 * @return bool true on success, false if address already used or invalid in some way
+	 */
+	public function addCC($address, $name = '')
+	{
+		return $this->addOrEnqueueAnAddress('cc', $address, $name);
+	}
+
+	/**
+	 * Add a "BCC" address.
+	 *
+	 * @param string $address The email address to send to
+	 * @param string $name
+	 *
+	 * @return bool true on success, false if address already used or invalid in some way
+	 */
+	public function addBCC($address, $name = '')
+	{
+		return $this->addOrEnqueueAnAddress('bcc', $address, $name);
+	}
+
+	/**
+	 * Add a "Reply-To" address.
+	 *
+	 * @param string $address The email address to reply to
+	 * @param string $name
+	 *
+	 * @return bool true on success, false if address already used or invalid in some way
+	 */
+	public function addReplyTo($address, $name = '')
+	{
+		return $this->addOrEnqueueAnAddress('Reply-To', $address, $name);
+	}
+
+	/**
+	 * Add an address to one of the recipient arrays or to the ReplyTo array. Because PHPMailer
+	 * can't validate addresses with an IDN without knowing the PHPMailer::$CharSet (that can still
+	 * be modified after calling this function), addition of such addresses is delayed until send().
+	 * Addresses that have been added already return false, but do not throw exceptions.
+	 *
+	 * @param string $kind    One of 'to', 'cc', 'bcc', or 'ReplyTo'
+	 * @param string $address The email address to send, resp. to reply to
+	 * @param string $name
+	 *
+	 * @throws Exception
+	 *
+	 * @return bool true on success, false if address already used or invalid in some way
+	 */
+	protected function addOrEnqueueAnAddress($kind, $address, $name)
+	{
+		$address = trim($address);
+		$name = trim(preg_replace('/[\r\n]+/', '', $name)); //Strip breaks and trim
+		$pos = strrpos($address, '@');
+		if (false === $pos) {
+			// At-sign is missing.
+			$error_message = $this->lang('invalid_address') . " (addAnAddress $kind): $address";
+			$this->setError($error_message);
+			$this->edebug($error_message);
+			if ($this->exceptions) {
+				throw new Exception($error_message);
+			}
+
+			return false;
+		}
+		$params = [$kind, $address, $name];
+		// Enqueue addresses with IDN until we know the PHPMailer::$CharSet.
+		if ($this->has8bitChars(substr($address, ++$pos)) and $this->idnSupported()) {
+			if ('Reply-To' != $kind) {
+				if (!array_key_exists($address, $this->RecipientsQueue)) {
+					$this->RecipientsQueue[$address] = $params;
+
+					return true;
+				}
+			} else {
+				if (!array_key_exists($address, $this->ReplyToQueue)) {
+					$this->ReplyToQueue[$address] = $params;
+
+					return true;
+				}
+			}
+
+			return false;
+		}
+
+		// Immediately add standard addresses without IDN.
+		return call_user_func_array([$this, 'addAnAddress'], $params);
+	}
+
+	/**
+	 * Add an address to one of the recipient arrays or to the ReplyTo array.
+	 * Addresses that have been added already return false, but do not throw exceptions.
+	 *
+	 * @param string $kind    One of 'to', 'cc', 'bcc', or 'ReplyTo'
+	 * @param string $address The email address to send, resp. to reply to
+	 * @param string $name
+	 *
+	 * @throws Exception
+	 *
+	 * @return bool true on success, false if address already used or invalid in some way
+	 */
+	protected function addAnAddress($kind, $address, $name = '')
+	{
+		if (!in_array($kind, ['to', 'cc', 'bcc', 'Reply-To'])) {
+			$error_message = $this->lang('Invalid recipient kind: ') . $kind;
+			$this->setError($error_message);
+			$this->edebug($error_message);
+			if ($this->exceptions) {
+				throw new Exception($error_message);
+			}
+
+			return false;
+		}
+		if (!static::validateAddress($address)) {
+			$error_message = $this->lang('invalid_address') . " (addAnAddress $kind): $address";
+			$this->setError($error_message);
+			$this->edebug($error_message);
+			if ($this->exceptions) {
+				throw new Exception($error_message);
+			}
+
+			return false;
+		}
+		if ('Reply-To' != $kind) {
+			if (!array_key_exists(strtolower($address), $this->all_recipients)) {
+				array_push($this->$kind, [$address, $name]);
+				$this->all_recipients[strtolower($address)] = true;
+
+				return true;
+			}
+		} else {
+			if (!array_key_exists(strtolower($address), $this->ReplyTo)) {
+				$this->ReplyTo[strtolower($address)] = [$address, $name];
+
+				return true;
+			}
+		}
+
+		return false;
+	}
+
+	/**
+	 * Parse and validate a string containing one or more RFC822-style comma-separated email addresses
+	 * of the form "display name <address>" into an array of name/address pairs.
+	 * Uses the imap_rfc822_parse_adrlist function if the IMAP extension is available.
+	 * Note that quotes in the name part are removed.
+	 *
+	 * @see    http://www.andrew.cmu.edu/user/agreen1/testing/mrbs/web/Mail/RFC822.php A more careful implementation
+	 *
+	 * @param string $addrstr The address list string
+	 * @param bool   $useimap Whether to use the IMAP extension to parse the list
+	 *
+	 * @return array
+	 */
+	public static function parseAddresses($addrstr, $useimap = true)
+	{
+		$addresses = [];
+		if ($useimap and function_exists('imap_rfc822_parse_adrlist')) {
+			//Use this built-in parser if it's available
+			$list = imap_rfc822_parse_adrlist($addrstr, '');
+			foreach ($list as $address) {
+				if ('.SYNTAX-ERROR.' != $address->host) {
+					if (static::validateAddress($address->mailbox . '@' . $address->host)) {
+						$addresses[] = [
+							'name' => (property_exists($address, 'personal') ? $address->personal : ''),
+							'address' => $address->mailbox . '@' . $address->host,
+						];
+					}
+				}
+			}
+		} else {
+			//Use this simpler parser
+			$list = explode(',', $addrstr);
+			foreach ($list as $address) {
+				$address = trim($address);
+				//Is there a separate name part?
+				if (strpos($address, '<') === false) {
+					//No separate name, just use the whole thing
+					if (static::validateAddress($address)) {
+						$addresses[] = [
+							'name' => '',
+							'address' => $address,
+						];
+					}
+				} else {
+					list($name, $email) = explode('<', $address);
+					$email = trim(str_replace('>', '', $email));
+					if (static::validateAddress($email)) {
+						$addresses[] = [
+							'name' => trim(str_replace(['"', "'"], '', $name)),
+							'address' => $email,
+						];
+					}
+				}
+			}
+		}
+
+		return $addresses;
+	}
+
+	/**
+	 * Set the From and FromName properties.
+	 *
+	 * @param string $address
+	 * @param string $name
+	 * @param bool   $auto    Whether to also set the Sender address, defaults to true
+	 *
+	 * @throws Exception
+	 *
+	 * @return bool
+	 */
+	public function setFrom($address, $name = '', $auto = true)
+	{
+		$address = trim($address);
+		$name = trim(preg_replace('/[\r\n]+/', '', $name)); //Strip breaks and trim
+		// Don't validate now addresses with IDN. Will be done in send().
+		$pos = strrpos($address, '@');
+		if (false === $pos or
+			(!$this->has8bitChars(substr($address, ++$pos)) or !$this->idnSupported()) and
+			!static::validateAddress($address)) {
+			$error_message = $this->lang('invalid_address') . " (setFrom) $address";
+			$this->setError($error_message);
+			$this->edebug($error_message);
+			if ($this->exceptions) {
+				throw new Exception($error_message);
+			}
+
+			return false;
+		}
+		$this->From = $address;
+		$this->FromName = $name;
+		if ($auto) {
+			if (empty($this->Sender)) {
+				$this->Sender = $address;
+			}
+		}
+
+		return true;
+	}
+
+	/**
+	 * Return the Message-ID header of the last email.
+	 * Technically this is the value from the last time the headers were created,
+	 * but it's also the message ID of the last sent message except in
+	 * pathological cases.
+	 *
+	 * @return string
+	 */
+	public function getLastMessageID()
+	{
+		return $this->lastMessageID;
+	}
+
+	/**
+	 * Check that a string looks like an email address.
+	 * Validation patterns supported:
+	 * * `auto` Pick best pattern automatically;
+	 * * `pcre8` Use the squiloople.com pattern, requires PCRE > 8.0;
+	 * * `pcre` Use old PCRE implementation;
+	 * * `php` Use PHP built-in FILTER_VALIDATE_EMAIL;
+	 * * `html5` Use the pattern given by the HTML5 spec for 'email' type form input elements.
+	 * * `noregex` Don't use a regex: super fast, really dumb.
+	 * Alternatively you may pass in a callable to inject your own validator, for example:
+	 *
+	 * ```php
+	 * PHPMailer::validateAddress('user@example.com', function($address) {
+	 *     return (strpos($address, '@') !== false);
+	 * });
+	 * ```
+	 *
+	 * You can also set the PHPMailer::$validator static to a callable, allowing built-in methods to use your validator.
+	 *
+	 * @param string          $address       The email address to check
+	 * @param string|callable $patternselect Which pattern to use
+	 *
+	 * @return bool
+	 */
+	public static function validateAddress($address, $patternselect = null)
+	{
+		if (null === $patternselect) {
+			$patternselect = static::$validator;
+		}
+		if (is_callable($patternselect)) {
+			return call_user_func($patternselect, $address);
+		}
+		//Reject line breaks in addresses; it's valid RFC5322, but not RFC5321
+		if (strpos($address, "\n") !== false or strpos($address, "\r") !== false) {
+			return false;
+		}
+		switch ($patternselect) {
+			case 'pcre': //Kept for BC
+			case 'pcre8':
+				/*
                  * A more complex and more permissive version of the RFC5322 regex on which FILTER_VALIDATE_EMAIL
                  * is based.
                  * In addition to the addresses allowed by filter_var, also permits:
@@ -1211,3177 +1211,3177 @@ 
                  * @copyright 2009-2010 Michael Rushton
                  * Feel free to use and redistribute this code. But please keep this copyright notice.
                  */
-                return (bool) preg_match(
-                    '/^(?!(?>(?1)"?(?>\\\[ -~]|[^"])"?(?1)){255,})(?!(?>(?1)"?(?>\\\[ -~]|[^"])"?(?1)){65,}@)' .
-                    '((?>(?>(?>((?>(?>(?>\x0D\x0A)?[\t ])+|(?>[\t ]*\x0D\x0A)?[\t ]+)?)(\((?>(?2)' .
-                    '(?>[\x01-\x08\x0B\x0C\x0E-\'*-\[\]-\x7F]|\\\[\x00-\x7F]|(?3)))*(?2)\)))+(?2))|(?2))?)' .
-                    '([!#-\'*+\/-9=?^-~-]+|"(?>(?2)(?>[\x01-\x08\x0B\x0C\x0E-!#-\[\]-\x7F]|\\\[\x00-\x7F]))*' .
-                    '(?2)")(?>(?1)\.(?1)(?4))*(?1)@(?!(?1)[a-z0-9-]{64,})(?1)(?>([a-z0-9](?>[a-z0-9-]*[a-z0-9])?)' .
-                    '(?>(?1)\.(?!(?1)[a-z0-9-]{64,})(?1)(?5)){0,126}|\[(?:(?>IPv6:(?>([a-f0-9]{1,4})(?>:(?6)){7}' .
-                    '|(?!(?:.*[a-f0-9][:\]]){8,})((?6)(?>:(?6)){0,6})?::(?7)?))|(?>(?>IPv6:(?>(?6)(?>:(?6)){5}:' .
-                    '|(?!(?:.*[a-f0-9]:){6,})(?8)?::(?>((?6)(?>:(?6)){0,4}):)?))?(25[0-5]|2[0-4][0-9]|1[0-9]{2}' .
-                    '|[1-9]?[0-9])(?>\.(?9)){3}))\])(?1)$/isD',
-                    $address
-                );
-            case 'html5':
-                /*
+				return (bool) preg_match(
+					'/^(?!(?>(?1)"?(?>\\\[ -~]|[^"])"?(?1)){255,})(?!(?>(?1)"?(?>\\\[ -~]|[^"])"?(?1)){65,}@)' .
+					'((?>(?>(?>((?>(?>(?>\x0D\x0A)?[\t ])+|(?>[\t ]*\x0D\x0A)?[\t ]+)?)(\((?>(?2)' .
+					'(?>[\x01-\x08\x0B\x0C\x0E-\'*-\[\]-\x7F]|\\\[\x00-\x7F]|(?3)))*(?2)\)))+(?2))|(?2))?)' .
+					'([!#-\'*+\/-9=?^-~-]+|"(?>(?2)(?>[\x01-\x08\x0B\x0C\x0E-!#-\[\]-\x7F]|\\\[\x00-\x7F]))*' .
+					'(?2)")(?>(?1)\.(?1)(?4))*(?1)@(?!(?1)[a-z0-9-]{64,})(?1)(?>([a-z0-9](?>[a-z0-9-]*[a-z0-9])?)' .
+					'(?>(?1)\.(?!(?1)[a-z0-9-]{64,})(?1)(?5)){0,126}|\[(?:(?>IPv6:(?>([a-f0-9]{1,4})(?>:(?6)){7}' .
+					'|(?!(?:.*[a-f0-9][:\]]){8,})((?6)(?>:(?6)){0,6})?::(?7)?))|(?>(?>IPv6:(?>(?6)(?>:(?6)){5}:' .
+					'|(?!(?:.*[a-f0-9]:){6,})(?8)?::(?>((?6)(?>:(?6)){0,4}):)?))?(25[0-5]|2[0-4][0-9]|1[0-9]{2}' .
+					'|[1-9]?[0-9])(?>\.(?9)){3}))\])(?1)$/isD',
+					$address
+				);
+			case 'html5':
+				/*
                  * This is the pattern used in the HTML5 spec for validation of 'email' type form input elements.
                  *
                  * @see http://www.whatwg.org/specs/web-apps/current-work/#e-mail-state-(type=email)
                  */
-                return (bool) preg_match(
-                    '/^[a-zA-Z0-9.!#$%&\'*+\/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}' .
-                    '[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/sD',
-                    $address
-                );
-            case 'php':
-            default:
-                return (bool) filter_var($address, FILTER_VALIDATE_EMAIL);
-        }
-    }
-
-    /**
-     * Tells whether IDNs (Internationalized Domain Names) are supported or not. This requires the
-     * `intl` and `mbstring` PHP extensions.
-     *
-     * @return bool `true` if required functions for IDN support are present
-     */
-    public function idnSupported()
-    {
-        return function_exists('idn_to_ascii') and function_exists('mb_convert_encoding');
-    }
-
-    /**
-     * Converts IDN in given email address to its ASCII form, also known as punycode, if possible.
-     * Important: Address must be passed in same encoding as currently set in PHPMailer::$CharSet.
-     * This function silently returns unmodified address if:
-     * - No conversion is necessary (i.e. domain name is not an IDN, or is already in ASCII form)
-     * - Conversion to punycode is impossible (e.g. required PHP functions are not available)
-     *   or fails for any reason (e.g. domain contains characters not allowed in an IDN).
-     *
-     * @see    PHPMailer::$CharSet
-     *
-     * @param string $address The email address to convert
-     *
-     * @return string The encoded address in ASCII form
-     */
-    public function punyencodeAddress($address)
-    {
-        // Verify we have required functions, CharSet, and at-sign.
-        $pos = strrpos($address, '@');
-        if ($this->idnSupported() and
-            !empty($this->CharSet) and
-            false !== $pos
-        ) {
-            $domain = substr($address, ++$pos);
-            // Verify CharSet string is a valid one, and domain properly encoded in this CharSet.
-            if ($this->has8bitChars($domain) and @mb_check_encoding($domain, $this->CharSet)) {
-                $domain = mb_convert_encoding($domain, 'UTF-8', $this->CharSet);
-                //Ignore IDE complaints about this line - method signature changed in PHP 5.4
-                $errorcode = 0;
-                $punycode = idn_to_ascii($domain, $errorcode, INTL_IDNA_VARIANT_UTS46);
-                if (false !== $punycode) {
-                    return substr($address, 0, $pos) . $punycode;
-                }
-            }
-        }
-
-        return $address;
-    }
-
-    /**
-     * Create a message and send it.
-     * Uses the sending method specified by $Mailer.
-     *
-     * @throws Exception
-     *
-     * @return bool false on error - See the ErrorInfo property for details of the error
-     */
-    public function send()
-    {
-        try {
-            if (!$this->preSend()) {
-                return false;
-            }
-
-            return $this->postSend();
-        } catch (Exception $exc) {
-            $this->mailHeader = '';
-            $this->setError($exc->getMessage());
-            if ($this->exceptions) {
-                throw $exc;
-            }
-
-            return false;
-        }
-    }
-
-    /**
-     * Prepare a message for sending.
-     *
-     * @throws Exception
-     *
-     * @return bool
-     */
-    public function preSend()
-    {
-        if ('smtp' == $this->Mailer or
-            ('mail' == $this->Mailer and stripos(PHP_OS, 'WIN') === 0)
-        ) {
-            //SMTP mandates RFC-compliant line endings
-            //and it's also used with mail() on Windows
-            static::setLE("\r\n");
-        } else {
-            //Maintain backward compatibility with legacy Linux command line mailers
-            static::setLE(PHP_EOL);
-        }
-        //Check for buggy PHP versions that add a header with an incorrect line break
-        if (ini_get('mail.add_x_header') == 1
-            and 'mail' == $this->Mailer
-            and stripos(PHP_OS, 'WIN') === 0
-            and ((version_compare(PHP_VERSION, '7.0.0', '>=')
-                    and version_compare(PHP_VERSION, '7.0.17', '<'))
-                or (version_compare(PHP_VERSION, '7.1.0', '>=')
-                    and version_compare(PHP_VERSION, '7.1.3', '<')))
-        ) {
-            trigger_error(
-                'Your version of PHP is affected by a bug that may result in corrupted messages.' .
-                ' To fix it, switch to sending using SMTP, disable the mail.add_x_header option in' .
-                ' your php.ini, switch to MacOS or Linux, or upgrade your PHP to version 7.0.17+ or 7.1.3+.',
-                E_USER_WARNING
-            );
-        }
-
-        try {
-            $this->error_count = 0; // Reset errors
-            $this->mailHeader = '';
-
-            // Dequeue recipient and Reply-To addresses with IDN
-            foreach (array_merge($this->RecipientsQueue, $this->ReplyToQueue) as $params) {
-                $params[1] = $this->punyencodeAddress($params[1]);
-                call_user_func_array([$this, 'addAnAddress'], $params);
-            }
-            if (count($this->to) + count($this->cc) + count($this->bcc) < 1) {
-                throw new Exception($this->lang('provide_address'), self::STOP_CRITICAL);
-            }
-
-            // Validate From, Sender, and ConfirmReadingTo addresses
-            foreach (['From', 'Sender', 'ConfirmReadingTo'] as $address_kind) {
-                $this->$address_kind = trim($this->$address_kind);
-                if (empty($this->$address_kind)) {
-                    continue;
-                }
-                $this->$address_kind = $this->punyencodeAddress($this->$address_kind);
-                if (!static::validateAddress($this->$address_kind)) {
-                    $error_message = $this->lang('invalid_address') . ' (punyEncode) ' . $this->$address_kind;
-                    $this->setError($error_message);
-                    $this->edebug($error_message);
-                    if ($this->exceptions) {
-                        throw new Exception($error_message);
-                    }
-
-                    return false;
-                }
-            }
-
-            // Set whether the message is multipart/alternative
-            if ($this->alternativeExists()) {
-                $this->ContentType = 'multipart/alternative';
-            }
-
-            $this->setMessageType();
-            // Refuse to send an empty message unless we are specifically allowing it
-            if (!$this->AllowEmpty and empty($this->Body)) {
-                throw new Exception($this->lang('empty_message'), self::STOP_CRITICAL);
-            }
-
-            //Trim subject consistently
-            $this->Subject = trim($this->Subject);
-            // Create body before headers in case body makes changes to headers (e.g. altering transfer encoding)
-            $this->MIMEHeader = '';
-            $this->MIMEBody = $this->createBody();
-            // createBody may have added some headers, so retain them
-            $tempheaders = $this->MIMEHeader;
-            $this->MIMEHeader = $this->createHeader();
-            $this->MIMEHeader .= $tempheaders;
-
-            // To capture the complete message when using mail(), create
-            // an extra header list which createHeader() doesn't fold in
-            if ('mail' == $this->Mailer) {
-                if (count($this->to) > 0) {
-                    $this->mailHeader .= $this->addrAppend('To', $this->to);
-                } else {
-                    $this->mailHeader .= $this->headerLine('To', 'undisclosed-recipients:;');
-                }
-                $this->mailHeader .= $this->headerLine(
-                    'Subject',
-                    $this->encodeHeader($this->secureHeader($this->Subject))
-                );
-            }
-
-            // Sign with DKIM if enabled
-            if (!empty($this->DKIM_domain)
-                and !empty($this->DKIM_selector)
-                and (!empty($this->DKIM_private_string)
-                    or (!empty($this->DKIM_private) and file_exists($this->DKIM_private))
-                )
-            ) {
-                $header_dkim = $this->DKIM_Add(
-                    $this->MIMEHeader . $this->mailHeader,
-                    $this->encodeHeader($this->secureHeader($this->Subject)),
-                    $this->MIMEBody
-                );
-                $this->MIMEHeader = rtrim($this->MIMEHeader, "\r\n ") . static::$LE .
-                    static::normalizeBreaks($header_dkim) . static::$LE;
-            }
-
-            return true;
-        } catch (Exception $exc) {
-            $this->setError($exc->getMessage());
-            if ($this->exceptions) {
-                throw $exc;
-            }
-
-            return false;
-        }
-    }
-
-    /**
-     * Actually send a message via the selected mechanism.
-     *
-     * @throws Exception
-     *
-     * @return bool
-     */
-    public function postSend()
-    {
-        try {
-            // Choose the mailer and send through it
-            switch ($this->Mailer) {
-                case 'sendmail':
-                case 'qmail':
-                    return $this->sendmailSend($this->MIMEHeader, $this->MIMEBody);
-                case 'smtp':
-                    return $this->smtpSend($this->MIMEHeader, $this->MIMEBody);
-                case 'mail':
-                    return $this->mailSend($this->MIMEHeader, $this->MIMEBody);
-                default:
-                    $sendMethod = $this->Mailer . 'Send';
-                    if (method_exists($this, $sendMethod)) {
-                        return $this->$sendMethod($this->MIMEHeader, $this->MIMEBody);
-                    }
-
-                    return $this->mailSend($this->MIMEHeader, $this->MIMEBody);
-            }
-        } catch (Exception $exc) {
-            $this->setError($exc->getMessage());
-            $this->edebug($exc->getMessage());
-            if ($this->exceptions) {
-                throw $exc;
-            }
-        }
-
-        return false;
-    }
-
-    /**
-     * Send mail using the $Sendmail program.
-     *
-     * @see    PHPMailer::$Sendmail
-     *
-     * @param string $header The message headers
-     * @param string $body   The message body
-     *
-     * @throws Exception
-     *
-     * @return bool
-     */
-    protected function sendmailSend($header, $body)
-    {
-        // CVE-2016-10033, CVE-2016-10045: Don't pass -f if characters will be escaped.
-        if (!empty($this->Sender) and self::isShellSafe($this->Sender)) {
-            if ('qmail' == $this->Mailer) {
-                $sendmailFmt = '%s -f%s';
-            } else {
-                $sendmailFmt = '%s -oi -f%s -t';
-            }
-        } else {
-            if ('qmail' == $this->Mailer) {
-                $sendmailFmt = '%s';
-            } else {
-                $sendmailFmt = '%s -oi -t';
-            }
-        }
-
-        $sendmail = sprintf($sendmailFmt, escapeshellcmd($this->Sendmail), $this->Sender);
-
-        if ($this->SingleTo) {
-            foreach ($this->SingleToArray as $toAddr) {
-                $mail = @popen($sendmail, 'w');
-                if (!$mail) {
-                    throw new Exception($this->lang('execute') . $this->Sendmail, self::STOP_CRITICAL);
-                }
-                fwrite($mail, 'To: ' . $toAddr . "\n");
-                fwrite($mail, $header);
-                fwrite($mail, $body);
-                $result = pclose($mail);
-                $this->doCallback(
-                    ($result == 0),
-                    [$toAddr],
-                    $this->cc,
-                    $this->bcc,
-                    $this->Subject,
-                    $body,
-                    $this->From,
-                    []
-                );
-                if (0 !== $result) {
-                    throw new Exception($this->lang('execute') . $this->Sendmail, self::STOP_CRITICAL);
-                }
-            }
-        } else {
-            $mail = @popen($sendmail, 'w');
-            if (!$mail) {
-                throw new Exception($this->lang('execute') . $this->Sendmail, self::STOP_CRITICAL);
-            }
-            fwrite($mail, $header);
-            fwrite($mail, $body);
-            $result = pclose($mail);
-            $this->doCallback(
-                ($result == 0),
-                $this->to,
-                $this->cc,
-                $this->bcc,
-                $this->Subject,
-                $body,
-                $this->From,
-                []
-            );
-            if (0 !== $result) {
-                throw new Exception($this->lang('execute') . $this->Sendmail, self::STOP_CRITICAL);
-            }
-        }
-
-        return true;
-    }
-
-    /**
-     * Fix CVE-2016-10033 and CVE-2016-10045 by disallowing potentially unsafe shell characters.
-     * Note that escapeshellarg and escapeshellcmd are inadequate for our purposes, especially on Windows.
-     *
-     * @see https://github.com/PHPMailer/PHPMailer/issues/924 CVE-2016-10045 bug report
-     *
-     * @param string $string The string to be validated
-     *
-     * @return bool
-     */
-    protected static function isShellSafe($string)
-    {
-        // Future-proof
-        if (escapeshellcmd($string) !== $string
-            or !in_array(escapeshellarg($string), ["'$string'", "\"$string\""])
-        ) {
-            return false;
-        }
-
-        $length = strlen($string);
-
-        for ($i = 0; $i < $length; ++$i) {
-            $c = $string[$i];
-
-            // All other characters have a special meaning in at least one common shell, including = and +.
-            // Full stop (.) has a special meaning in cmd.exe, but its impact should be negligible here.
-            // Note that this does permit non-Latin alphanumeric characters based on the current locale.
-            if (!ctype_alnum($c) && strpos('@_-.', $c) === false) {
-                return false;
-            }
-        }
-
-        return true;
-    }
-
-    /**
-     * Send mail using the PHP mail() function.
-     *
-     * @see    http://www.php.net/manual/en/book.mail.php
-     *
-     * @param string $header The message headers
-     * @param string $body   The message body
-     *
-     * @throws Exception
-     *
-     * @return bool
-     */
-    protected function mailSend($header, $body)
-    {
-        $toArr = [];
-        foreach ($this->to as $toaddr) {
-            $toArr[] = $this->addrFormat($toaddr);
-        }
-        $to = implode(', ', $toArr);
-
-        $params = null;
-        //This sets the SMTP envelope sender which gets turned into a return-path header by the receiver
-        if (!empty($this->Sender) and static::validateAddress($this->Sender)) {
-            //A space after `-f` is optional, but there is a long history of its presence
-            //causing problems, so we don't use one
-            //Exim docs: http://www.exim.org/exim-html-current/doc/html/spec_html/ch-the_exim_command_line.html
-            //Sendmail docs: http://www.sendmail.org/~ca/email/man/sendmail.html
-            //Qmail docs: http://www.qmail.org/man/man8/qmail-inject.html
-            //Example problem: https://www.drupal.org/node/1057954
-            // CVE-2016-10033, CVE-2016-10045: Don't pass -f if characters will be escaped.
-            if (self::isShellSafe($this->Sender)) {
-                $params = sprintf('-f%s', $this->Sender);
-            }
-        }
-        if (!empty($this->Sender) and static::validateAddress($this->Sender)) {
-            $old_from = ini_get('sendmail_from');
-            ini_set('sendmail_from', $this->Sender);
-        }
-        $result = false;
-        if ($this->SingleTo and count($toArr) > 1) {
-            foreach ($toArr as $toAddr) {
-                $result = $this->mailPassthru($toAddr, $this->Subject, $body, $header, $params);
-                $this->doCallback($result, [$toAddr], $this->cc, $this->bcc, $this->Subject, $body, $this->From, []);
-            }
-        } else {
-            $result = $this->mailPassthru($to, $this->Subject, $body, $header, $params);
-            $this->doCallback($result, $this->to, $this->cc, $this->bcc, $this->Subject, $body, $this->From, []);
-        }
-        if (isset($old_from)) {
-            ini_set('sendmail_from', $old_from);
-        }
-        if (!$result) {
-            throw new Exception($this->lang('instantiate'), self::STOP_CRITICAL);
-        }
-
-        return true;
-    }
-
-    /**
-     * Get an instance to use for SMTP operations.
-     * Override this function to load your own SMTP implementation,
-     * or set one with setSMTPInstance.
-     *
-     * @return SMTP
-     */
-    public function getSMTPInstance()
-    {
-        if (!is_object($this->smtp)) {
-            $this->smtp = new SMTP();
-        }
-
-        return $this->smtp;
-    }
-
-    /**
-     * Provide an instance to use for SMTP operations.
-     *
-     * @param SMTP $smtp
-     *
-     * @return SMTP
-     */
-    public function setSMTPInstance(SMTP $smtp)
-    {
-        $this->smtp = $smtp;
-
-        return $this->smtp;
-    }
-
-    /**
-     * Send mail via SMTP.
-     * Returns false if there is a bad MAIL FROM, RCPT, or DATA input.
-     *
-     * @see PHPMailer::setSMTPInstance() to use a different class.
-     *
-     * @uses \PHPMailer\PHPMailer\SMTP
-     *
-     * @param string $header The message headers
-     * @param string $body   The message body
-     *
-     * @throws Exception
-     *
-     * @return bool
-     */
-    protected function smtpSend($header, $body)
-    {
-        $bad_rcpt = [];
-        if (!$this->smtpConnect($this->SMTPOptions)) {
-            throw new Exception($this->lang('smtp_connect_failed'), self::STOP_CRITICAL);
-        }
-        //Sender already validated in preSend()
-        if ('' == $this->Sender) {
-            $smtp_from = $this->From;
-        } else {
-            $smtp_from = $this->Sender;
-        }
-        if (!$this->smtp->mail($smtp_from)) {
-            $this->setError($this->lang('from_failed') . $smtp_from . ' : ' . implode(',', $this->smtp->getError()));
-            throw new Exception($this->ErrorInfo, self::STOP_CRITICAL);
-        }
-
-        $callbacks = [];
-        // Attempt to send to all recipients
-        foreach ([$this->to, $this->cc, $this->bcc] as $togroup) {
-            foreach ($togroup as $to) {
-                if (!$this->smtp->recipient($to[0])) {
-                    $error = $this->smtp->getError();
-                    $bad_rcpt[] = ['to' => $to[0], 'error' => $error['detail']];
-                    $isSent = false;
-                } else {
-                    $isSent = true;
-                }
-
-                $callbacks[] = ['issent'=>$isSent, 'to'=>$to[0]];
-            }
-        }
-
-        // Only send the DATA command if we have viable recipients
-        if ((count($this->all_recipients) > count($bad_rcpt)) and !$this->smtp->data($header . $body)) {
-            throw new Exception($this->lang('data_not_accepted'), self::STOP_CRITICAL);
-        }
-
-        $smtp_transaction_id = $this->smtp->getLastTransactionID();
-
-        if ($this->SMTPKeepAlive) {
-            $this->smtp->reset();
-        } else {
-            $this->smtp->quit();
-            $this->smtp->close();
-        }
-
-        foreach ($callbacks as $cb) {
-            $this->doCallback(
-                $cb['issent'],
-                [$cb['to']],
-                [],
-                [],
-                $this->Subject,
-                $body,
-                $this->From,
-                ['smtp_transaction_id' => $smtp_transaction_id]
-            );
-        }
-
-        //Create error message for any bad addresses
-        if (count($bad_rcpt) > 0) {
-            $errstr = '';
-            foreach ($bad_rcpt as $bad) {
-                $errstr .= $bad['to'] . ': ' . $bad['error'];
-            }
-            throw new Exception(
-                $this->lang('recipients_failed') . $errstr,
-                self::STOP_CONTINUE
-            );
-        }
-
-        return true;
-    }
-
-    /**
-     * Initiate a connection to an SMTP server.
-     * Returns false if the operation failed.
-     *
-     * @param array $options An array of options compatible with stream_context_create()
-     *
-     * @throws Exception
-     *
-     * @uses \PHPMailer\PHPMailer\SMTP
-     *
-     * @return bool
-     */
-    public function smtpConnect($options = null)
-    {
-        if (null === $this->smtp) {
-            $this->smtp = $this->getSMTPInstance();
-        }
-
-        //If no options are provided, use whatever is set in the instance
-        if (null === $options) {
-            $options = $this->SMTPOptions;
-        }
-
-        // Already connected?
-        if ($this->smtp->connected()) {
-            return true;
-        }
-
-        $this->smtp->setTimeout($this->Timeout);
-        $this->smtp->setDebugLevel($this->SMTPDebug);
-        $this->smtp->setDebugOutput($this->Debugoutput);
-        $this->smtp->setVerp($this->do_verp);
-        $hosts = explode(';', $this->Host);
-        $lastexception = null;
-
-        foreach ($hosts as $hostentry) {
-            $hostinfo = [];
-            if (!preg_match(
-                '/^((ssl|tls):\/\/)*([a-zA-Z0-9\.-]*|\[[a-fA-F0-9:]+\]):?([0-9]*)$/',
-                trim($hostentry),
-                $hostinfo
-            )) {
-                static::edebug($this->lang('connect_host') . ' ' . $hostentry);
-                // Not a valid host entry
-                continue;
-            }
-            // $hostinfo[2]: optional ssl or tls prefix
-            // $hostinfo[3]: the hostname
-            // $hostinfo[4]: optional port number
-            // The host string prefix can temporarily override the current setting for SMTPSecure
-            // If it's not specified, the default value is used
-
-            //Check the host name is a valid name or IP address before trying to use it
-            if (!static::isValidHost($hostinfo[3])) {
-                static::edebug($this->lang('connect_host') . ' ' . $hostentry);
-                continue;
-            }
-            $prefix = '';
-            $secure = $this->SMTPSecure;
-            $tls = ('tls' == $this->SMTPSecure);
-            if ('ssl' == $hostinfo[2] or ('' == $hostinfo[2] and 'ssl' == $this->SMTPSecure)) {
-                $prefix = 'ssl://';
-                $tls = false; // Can't have SSL and TLS at the same time
-                $secure = 'ssl';
-            } elseif ('tls' == $hostinfo[2]) {
-                $tls = true;
-                // tls doesn't use a prefix
-                $secure = 'tls';
-            }
-            //Do we need the OpenSSL extension?
-            $sslext = defined('OPENSSL_ALGO_SHA256');
-            if ('tls' === $secure or 'ssl' === $secure) {
-                //Check for an OpenSSL constant rather than using extension_loaded, which is sometimes disabled
-                if (!$sslext) {
-                    throw new Exception($this->lang('extension_missing') . 'openssl', self::STOP_CRITICAL);
-                }
-            }
-            $host = $hostinfo[3];
-            $port = $this->Port;
-            $tport = (int) $hostinfo[4];
-            if ($tport > 0 and $tport < 65536) {
-                $port = $tport;
-            }
-            if ($this->smtp->connect($prefix . $host, $port, $this->Timeout, $options)) {
-                try {
-                    if ($this->Helo) {
-                        $hello = $this->Helo;
-                    } else {
-                        $hello = $this->serverHostname();
-                    }
-                    $this->smtp->hello($hello);
-                    //Automatically enable TLS encryption if:
-                    // * it's not disabled
-                    // * we have openssl extension
-                    // * we are not already using SSL
-                    // * the server offers STARTTLS
-                    if ($this->SMTPAutoTLS and $sslext and $secure != 'ssl' and $this->smtp->getServerExt('STARTTLS')) {
-                        $tls = true;
-                    }
-                    if ($tls) {
-                        if (!$this->smtp->startTLS()) {
-                            throw new Exception($this->lang('connect_host'));
-                        }
-                        // We must resend EHLO after TLS negotiation
-                        $this->smtp->hello($hello);
-                    }
-                    if ($this->SMTPAuth) {
-                        if (!$this->smtp->authenticate(
-                            $this->Username,
-                            $this->Password,
-                            $this->AuthType,
-                            $this->oauth
-                        )
-                        ) {
-                            throw new Exception($this->lang('authenticate'));
-                        }
-                    }
-
-                    return true;
-                } catch (Exception $exc) {
-                    $lastexception = $exc;
-                    $this->edebug($exc->getMessage());
-                    // We must have connected, but then failed TLS or Auth, so close connection nicely
-                    $this->smtp->quit();
-                }
-            }
-        }
-        // If we get here, all connection attempts have failed, so close connection hard
-        $this->smtp->close();
-        // As we've caught all exceptions, just report whatever the last one was
-        if ($this->exceptions and null !== $lastexception) {
-            throw $lastexception;
-        }
-
-        return false;
-    }
-
-    /**
-     * Close the active SMTP session if one exists.
-     */
-    public function smtpClose()
-    {
-        if (null !== $this->smtp) {
-            if ($this->smtp->connected()) {
-                $this->smtp->quit();
-                $this->smtp->close();
-            }
-        }
-    }
-
-    /**
-     * Set the language for error messages.
-     * Returns false if it cannot load the language file.
-     * The default language is English.
-     *
-     * @param string $langcode  ISO 639-1 2-character language code (e.g. French is "fr")
-     * @param string $lang_path Path to the language file directory, with trailing separator (slash)
-     *
-     * @return bool
-     */
-    public function setLanguage($langcode = 'en', $lang_path = '')
-    {
-        // Backwards compatibility for renamed language codes
-        $renamed_langcodes = [
-            'br' => 'pt_br',
-            'cz' => 'cs',
-            'dk' => 'da',
-            'no' => 'nb',
-            'se' => 'sv',
-            'sr' => 'rs',
-        ];
-
-        if (isset($renamed_langcodes[$langcode])) {
-            $langcode = $renamed_langcodes[$langcode];
-        }
-
-        // Define full set of translatable strings in English
-        $PHPMAILER_LANG = [
-            'authenticate' => 'SMTP Error: Could not authenticate.',
-            'connect_host' => 'SMTP Error: Could not connect to SMTP host.',
-            'data_not_accepted' => 'SMTP Error: data not accepted.',
-            'empty_message' => 'Message body empty',
-            'encoding' => 'Unknown encoding: ',
-            'execute' => 'Could not execute: ',
-            'file_access' => 'Could not access file: ',
-            'file_open' => 'File Error: Could not open file: ',
-            'from_failed' => 'The following From address failed: ',
-            'instantiate' => 'Could not instantiate mail function.',
-            'invalid_address' => 'Invalid address: ',
-            'mailer_not_supported' => ' mailer is not supported.',
-            'provide_address' => 'You must provide at least one recipient email address.',
-            'recipients_failed' => 'SMTP Error: The following recipients failed: ',
-            'signing' => 'Signing Error: ',
-            'smtp_connect_failed' => 'SMTP connect() failed.',
-            'smtp_error' => 'SMTP server error: ',
-            'variable_set' => 'Cannot set or reset variable: ',
-            'extension_missing' => 'Extension missing: ',
-        ];
-        if (empty($lang_path)) {
-            // Calculate an absolute path so it can work if CWD is not here
-            $lang_path = __DIR__ . DIRECTORY_SEPARATOR . 'language' . DIRECTORY_SEPARATOR;
-        }
-        //Validate $langcode
-        if (!preg_match('/^[a-z]{2}(?:_[a-zA-Z]{2})?$/', $langcode)) {
-            $langcode = 'en';
-        }
-        $foundlang = true;
-        $lang_file = $lang_path . 'phpmailer.lang-' . $langcode . '.php';
-        // There is no English translation file
-        if ('en' != $langcode) {
-            // Make sure language file path is readable
-            if (!file_exists($lang_file)) {
-                $foundlang = false;
-            } else {
-                // Overwrite language-specific strings.
-                // This way we'll never have missing translation keys.
-                $foundlang = include $lang_file;
-            }
-        }
-        $this->language = $PHPMAILER_LANG;
-
-        return (bool) $foundlang; // Returns false if language not found
-    }
-
-    /**
-     * Get the array of strings for the current language.
-     *
-     * @return array
-     */
-    public function getTranslations()
-    {
-        return $this->language;
-    }
-
-    /**
-     * Create recipient headers.
-     *
-     * @param string $type
-     * @param array  $addr An array of recipients,
-     *                     where each recipient is a 2-element indexed array with element 0 containing an address
-     *                     and element 1 containing a name, like:
-     *                     [['joe@example.com', 'Joe User'], ['zoe@example.com', 'Zoe User']]
-     *
-     * @return string
-     */
-    public function addrAppend($type, $addr)
-    {
-        $addresses = [];
-        foreach ($addr as $address) {
-            $addresses[] = $this->addrFormat($address);
-        }
-
-        return $type . ': ' . implode(', ', $addresses) . static::$LE;
-    }
-
-    /**
-     * Format an address for use in a message header.
-     *
-     * @param array $addr A 2-element indexed array, element 0 containing an address, element 1 containing a name like
-     *                    ['joe@example.com', 'Joe User']
-     *
-     * @return string
-     */
-    public function addrFormat($addr)
-    {
-        if (empty($addr[1])) { // No name provided
-            return $this->secureHeader($addr[0]);
-        }
-
-        return $this->encodeHeader($this->secureHeader($addr[1]), 'phrase') . ' <' . $this->secureHeader(
-                $addr[0]
-            ) . '>';
-    }
-
-    /**
-     * Word-wrap message.
-     * For use with mailers that do not automatically perform wrapping
-     * and for quoted-printable encoded messages.
-     * Original written by philippe.
-     *
-     * @param string $message The message to wrap
-     * @param int    $length  The line length to wrap to
-     * @param bool   $qp_mode Whether to run in Quoted-Printable mode
-     *
-     * @return string
-     */
-    public function wrapText($message, $length, $qp_mode = false)
-    {
-        if ($qp_mode) {
-            $soft_break = sprintf(' =%s', static::$LE);
-        } else {
-            $soft_break = static::$LE;
-        }
-        // If utf-8 encoding is used, we will need to make sure we don't
-        // split multibyte characters when we wrap
-        $is_utf8 = (strtolower($this->CharSet) == 'utf-8');
-        $lelen = strlen(static::$LE);
-        $crlflen = strlen(static::$LE);
-
-        $message = static::normalizeBreaks($message);
-        //Remove a trailing line break
-        if (substr($message, -$lelen) == static::$LE) {
-            $message = substr($message, 0, -$lelen);
-        }
-
-        //Split message into lines
-        $lines = explode(static::$LE, $message);
-        //Message will be rebuilt in here
-        $message = '';
-        foreach ($lines as $line) {
-            $words = explode(' ', $line);
-            $buf = '';
-            $firstword = true;
-            foreach ($words as $word) {
-                if ($qp_mode and (strlen($word) > $length)) {
-                    $space_left = $length - strlen($buf) - $crlflen;
-                    if (!$firstword) {
-                        if ($space_left > 20) {
-                            $len = $space_left;
-                            if ($is_utf8) {
-                                $len = $this->utf8CharBoundary($word, $len);
-                            } elseif (substr($word, $len - 1, 1) == '=') {
-                                --$len;
-                            } elseif (substr($word, $len - 2, 1) == '=') {
-                                $len -= 2;
-                            }
-                            $part = substr($word, 0, $len);
-                            $word = substr($word, $len);
-                            $buf .= ' ' . $part;
-                            $message .= $buf . sprintf('=%s', static::$LE);
-                        } else {
-                            $message .= $buf . $soft_break;
-                        }
-                        $buf = '';
-                    }
-                    while (strlen($word) > 0) {
-                        if ($length <= 0) {
-                            break;
-                        }
-                        $len = $length;
-                        if ($is_utf8) {
-                            $len = $this->utf8CharBoundary($word, $len);
-                        } elseif (substr($word, $len - 1, 1) == '=') {
-                            --$len;
-                        } elseif (substr($word, $len - 2, 1) == '=') {
-                            $len -= 2;
-                        }
-                        $part = substr($word, 0, $len);
-                        $word = substr($word, $len);
-
-                        if (strlen($word) > 0) {
-                            $message .= $part . sprintf('=%s', static::$LE);
-                        } else {
-                            $buf = $part;
-                        }
-                    }
-                } else {
-                    $buf_o = $buf;
-                    if (!$firstword) {
-                        $buf .= ' ';
-                    }
-                    $buf .= $word;
-
-                    if (strlen($buf) > $length and $buf_o != '') {
-                        $message .= $buf_o . $soft_break;
-                        $buf = $word;
-                    }
-                }
-                $firstword = false;
-            }
-            $message .= $buf . static::$LE;
-        }
-
-        return $message;
-    }
-
-    /**
-     * Find the last character boundary prior to $maxLength in a utf-8
-     * quoted-printable encoded string.
-     * Original written by Colin Brown.
-     *
-     * @param string $encodedText utf-8 QP text
-     * @param int    $maxLength   Find the last character boundary prior to this length
-     *
-     * @return int
-     */
-    public function utf8CharBoundary($encodedText, $maxLength)
-    {
-        $foundSplitPos = false;
-        $lookBack = 3;
-        while (!$foundSplitPos) {
-            $lastChunk = substr($encodedText, $maxLength - $lookBack, $lookBack);
-            $encodedCharPos = strpos($lastChunk, '=');
-            if (false !== $encodedCharPos) {
-                // Found start of encoded character byte within $lookBack block.
-                // Check the encoded byte value (the 2 chars after the '=')
-                $hex = substr($encodedText, $maxLength - $lookBack + $encodedCharPos + 1, 2);
-                $dec = hexdec($hex);
-                if ($dec < 128) {
-                    // Single byte character.
-                    // If the encoded char was found at pos 0, it will fit
-                    // otherwise reduce maxLength to start of the encoded char
-                    if ($encodedCharPos > 0) {
-                        $maxLength -= $lookBack - $encodedCharPos;
-                    }
-                    $foundSplitPos = true;
-                } elseif ($dec >= 192) {
-                    // First byte of a multi byte character
-                    // Reduce maxLength to split at start of character
-                    $maxLength -= $lookBack - $encodedCharPos;
-                    $foundSplitPos = true;
-                } elseif ($dec < 192) {
-                    // Middle byte of a multi byte character, look further back
-                    $lookBack += 3;
-                }
-            } else {
-                // No encoded character found
-                $foundSplitPos = true;
-            }
-        }
-
-        return $maxLength;
-    }
-
-    /**
-     * Apply word wrapping to the message body.
-     * Wraps the message body to the number of chars set in the WordWrap property.
-     * You should only do this to plain-text bodies as wrapping HTML tags may break them.
-     * This is called automatically by createBody(), so you don't need to call it yourself.
-     */
-    public function setWordWrap()
-    {
-        if ($this->WordWrap < 1) {
-            return;
-        }
-
-        switch ($this->message_type) {
-            case 'alt':
-            case 'alt_inline':
-            case 'alt_attach':
-            case 'alt_inline_attach':
-                $this->AltBody = $this->wrapText($this->AltBody, $this->WordWrap);
-                break;
-            default:
-                $this->Body = $this->wrapText($this->Body, $this->WordWrap);
-                break;
-        }
-    }
-
-    /**
-     * Assemble message headers.
-     *
-     * @return string The assembled headers
-     */
-    public function createHeader()
-    {
-        $result = '';
-
-        $result .= $this->headerLine('Date', '' == $this->MessageDate ? self::rfcDate() : $this->MessageDate);
-
-        // To be created automatically by mail()
-        if ($this->SingleTo) {
-            if ('mail' != $this->Mailer) {
-                foreach ($this->to as $toaddr) {
-                    $this->SingleToArray[] = $this->addrFormat($toaddr);
-                }
-            }
-        } else {
-            if (count($this->to) > 0) {
-                if ('mail' != $this->Mailer) {
-                    $result .= $this->addrAppend('To', $this->to);
-                }
-            } elseif (count($this->cc) == 0) {
-                $result .= $this->headerLine('To', 'undisclosed-recipients:;');
-            }
-        }
-
-        $result .= $this->addrAppend('From', [[trim($this->From), $this->FromName]]);
-
-        // sendmail and mail() extract Cc from the header before sending
-        if (count($this->cc) > 0) {
-            $result .= $this->addrAppend('Cc', $this->cc);
-        }
-
-        // sendmail and mail() extract Bcc from the header before sending
-        if ((
-                'sendmail' == $this->Mailer or 'qmail' == $this->Mailer or 'mail' == $this->Mailer
-            )
-            and count($this->bcc) > 0
-        ) {
-            $result .= $this->addrAppend('Bcc', $this->bcc);
-        }
-
-        if (count($this->ReplyTo) > 0) {
-            $result .= $this->addrAppend('Reply-To', $this->ReplyTo);
-        }
-
-        // mail() sets the subject itself
-        if ('mail' != $this->Mailer) {
-            $result .= $this->headerLine('Subject', $this->encodeHeader($this->secureHeader($this->Subject)));
-        }
-
-        // Only allow a custom message ID if it conforms to RFC 5322 section 3.6.4
-        // https://tools.ietf.org/html/rfc5322#section-3.6.4
-        if ('' != $this->MessageID and preg_match('/^<.*@.*>$/', $this->MessageID)) {
-            $this->lastMessageID = $this->MessageID;
-        } else {
-            $this->lastMessageID = sprintf('<%s@%s>', $this->uniqueid, $this->serverHostname());
-        }
-        $result .= $this->headerLine('Message-ID', $this->lastMessageID);
-        if (null !== $this->Priority) {
-            $result .= $this->headerLine('X-Priority', $this->Priority);
-        }
-        if ('' == $this->XMailer) {
-            $result .= $this->headerLine(
-                'X-Mailer',
-                'PHPMailer ' . self::VERSION . ' (https://github.com/PHPMailer/PHPMailer)'
-            );
-        } else {
-            $myXmailer = trim($this->XMailer);
-            if ($myXmailer) {
-                $result .= $this->headerLine('X-Mailer', $myXmailer);
-            }
-        }
-
-        if ('' != $this->ConfirmReadingTo) {
-            $result .= $this->headerLine('Disposition-Notification-To', '<' . $this->ConfirmReadingTo . '>');
-        }
-
-        // Add custom headers
-        foreach ($this->CustomHeader as $header) {
-            $result .= $this->headerLine(
-                trim($header[0]),
-                $this->encodeHeader(trim($header[1]))
-            );
-        }
-        if (!$this->sign_key_file) {
-            $result .= $this->headerLine('MIME-Version', '1.0');
-            $result .= $this->getMailMIME();
-        }
-
-        return $result;
-    }
-
-    /**
-     * Get the message MIME type headers.
-     *
-     * @return string
-     */
-    public function getMailMIME()
-    {
-        $result = '';
-        $ismultipart = true;
-        switch ($this->message_type) {
-            case 'inline':
-                $result .= $this->headerLine('Content-Type', 'multipart/related;');
-                $result .= $this->textLine("\tboundary=\"" . $this->boundary[1] . '"');
-                break;
-            case 'attach':
-            case 'inline_attach':
-            case 'alt_attach':
-            case 'alt_inline_attach':
-                $result .= $this->headerLine('Content-Type', 'multipart/mixed;');
-                $result .= $this->textLine("\tboundary=\"" . $this->boundary[1] . '"');
-                break;
-            case 'alt':
-            case 'alt_inline':
-                $result .= $this->headerLine('Content-Type', 'multipart/alternative;');
-                $result .= $this->textLine("\tboundary=\"" . $this->boundary[1] . '"');
-                break;
-            default:
-                // Catches case 'plain': and case '':
-                $result .= $this->textLine('Content-Type: ' . $this->ContentType . '; charset=' . $this->CharSet);
-                $ismultipart = false;
-                break;
-        }
-        // RFC1341 part 5 says 7bit is assumed if not specified
-        if ('7bit' != $this->Encoding) {
-            // RFC 2045 section 6.4 says multipart MIME parts may only use 7bit, 8bit or binary CTE
-            if ($ismultipart) {
-                if ('8bit' == $this->Encoding) {
-                    $result .= $this->headerLine('Content-Transfer-Encoding', '8bit');
-                }
-                // The only remaining alternatives are quoted-printable and base64, which are both 7bit compatible
-            } else {
-                $result .= $this->headerLine('Content-Transfer-Encoding', $this->Encoding);
-            }
-        }
-
-        if ('mail' != $this->Mailer) {
-            $result .= static::$LE;
-        }
-
-        return $result;
-    }
-
-    /**
-     * Returns the whole MIME message.
-     * Includes complete headers and body.
-     * Only valid post preSend().
-     *
-     * @see PHPMailer::preSend()
-     *
-     * @return string
-     */
-    public function getSentMIMEMessage()
-    {
-        return rtrim($this->MIMEHeader . $this->mailHeader, "\n\r") . static::$LE . static::$LE . $this->MIMEBody;
-    }
-
-    /**
-     * Create a unique ID to use for boundaries.
-     *
-     * @return string
-     */
-    protected function generateId()
-    {
-        $len = 32; //32 bytes = 256 bits
-        if (function_exists('random_bytes')) {
-            $bytes = random_bytes($len);
-        } elseif (function_exists('openssl_random_pseudo_bytes')) {
-            $bytes = openssl_random_pseudo_bytes($len);
-        } else {
-            //Use a hash to force the length to the same as the other methods
-            $bytes = hash('sha256', uniqid((string) mt_rand(), true), true);
-        }
-
-        //We don't care about messing up base64 format here, just want a random string
-        return str_replace(['=', '+', '/'], '', base64_encode(hash('sha256', $bytes, true)));
-    }
-
-    /**
-     * Assemble the message body.
-     * Returns an empty string on failure.
-     *
-     * @throws Exception
-     *
-     * @return string The assembled message body
-     */
-    public function createBody()
-    {
-        $body = '';
-        //Create unique IDs and preset boundaries
-        $this->uniqueid = $this->generateId();
-        $this->boundary[1] = 'b1_' . $this->uniqueid;
-        $this->boundary[2] = 'b2_' . $this->uniqueid;
-        $this->boundary[3] = 'b3_' . $this->uniqueid;
-
-        if ($this->sign_key_file) {
-            $body .= $this->getMailMIME() . static::$LE;
-        }
-
-        $this->setWordWrap();
-
-        $bodyEncoding = $this->Encoding;
-        $bodyCharSet = $this->CharSet;
-        //Can we do a 7-bit downgrade?
-        if ('8bit' == $bodyEncoding and !$this->has8bitChars($this->Body)) {
-            $bodyEncoding = '7bit';
-            //All ISO 8859, Windows codepage and UTF-8 charsets are ascii compatible up to 7-bit
-            $bodyCharSet = 'us-ascii';
-        }
-        //If lines are too long, and we're not already using an encoding that will shorten them,
-        //change to quoted-printable transfer encoding for the body part only
-        if ('base64' != $this->Encoding and static::hasLineLongerThanMax($this->Body)) {
-            $bodyEncoding = 'quoted-printable';
-        }
-
-        $altBodyEncoding = $this->Encoding;
-        $altBodyCharSet = $this->CharSet;
-        //Can we do a 7-bit downgrade?
-        if ('8bit' == $altBodyEncoding and !$this->has8bitChars($this->AltBody)) {
-            $altBodyEncoding = '7bit';
-            //All ISO 8859, Windows codepage and UTF-8 charsets are ascii compatible up to 7-bit
-            $altBodyCharSet = 'us-ascii';
-        }
-        //If lines are too long, and we're not already using an encoding that will shorten them,
-        //change to quoted-printable transfer encoding for the alt body part only
-        if ('base64' != $altBodyEncoding and static::hasLineLongerThanMax($this->AltBody)) {
-            $altBodyEncoding = 'quoted-printable';
-        }
-        //Use this as a preamble in all multipart message types
-        $mimepre = 'This is a multi-part message in MIME format.' . static::$LE;
-        switch ($this->message_type) {
-            case 'inline':
-                $body .= $mimepre;
-                $body .= $this->getBoundary($this->boundary[1], $bodyCharSet, '', $bodyEncoding);
-                $body .= $this->encodeString($this->Body, $bodyEncoding);
-                $body .= static::$LE;
-                $body .= $this->attachAll('inline', $this->boundary[1]);
-                break;
-            case 'attach':
-                $body .= $mimepre;
-                $body .= $this->getBoundary($this->boundary[1], $bodyCharSet, '', $bodyEncoding);
-                $body .= $this->encodeString($this->Body, $bodyEncoding);
-                $body .= static::$LE;
-                $body .= $this->attachAll('attachment', $this->boundary[1]);
-                break;
-            case 'inline_attach':
-                $body .= $mimepre;
-                $body .= $this->textLine('--' . $this->boundary[1]);
-                $body .= $this->headerLine('Content-Type', 'multipart/related;');
-                $body .= $this->textLine("\tboundary=\"" . $this->boundary[2] . '"');
-                $body .= static::$LE;
-                $body .= $this->getBoundary($this->boundary[2], $bodyCharSet, '', $bodyEncoding);
-                $body .= $this->encodeString($this->Body, $bodyEncoding);
-                $body .= static::$LE;
-                $body .= $this->attachAll('inline', $this->boundary[2]);
-                $body .= static::$LE;
-                $body .= $this->attachAll('attachment', $this->boundary[1]);
-                break;
-            case 'alt':
-                $body .= $mimepre;
-                $body .= $this->getBoundary($this->boundary[1], $altBodyCharSet, 'text/plain', $altBodyEncoding);
-                $body .= $this->encodeString($this->AltBody, $altBodyEncoding);
-                $body .= static::$LE;
-                $body .= $this->getBoundary($this->boundary[1], $bodyCharSet, 'text/html', $bodyEncoding);
-                $body .= $this->encodeString($this->Body, $bodyEncoding);
-                $body .= static::$LE;
-                if (!empty($this->Ical)) {
-                    $body .= $this->getBoundary($this->boundary[1], '', 'text/calendar; method=REQUEST', '');
-                    $body .= $this->encodeString($this->Ical, $this->Encoding);
-                    $body .= static::$LE;
-                }
-                $body .= $this->endBoundary($this->boundary[1]);
-                break;
-            case 'alt_inline':
-                $body .= $mimepre;
-                $body .= $this->getBoundary($this->boundary[1], $altBodyCharSet, 'text/plain', $altBodyEncoding);
-                $body .= $this->encodeString($this->AltBody, $altBodyEncoding);
-                $body .= static::$LE;
-                $body .= $this->textLine('--' . $this->boundary[1]);
-                $body .= $this->headerLine('Content-Type', 'multipart/related;');
-                $body .= $this->textLine("\tboundary=\"" . $this->boundary[2] . '"');
-                $body .= static::$LE;
-                $body .= $this->getBoundary($this->boundary[2], $bodyCharSet, 'text/html', $bodyEncoding);
-                $body .= $this->encodeString($this->Body, $bodyEncoding);
-                $body .= static::$LE;
-                $body .= $this->attachAll('inline', $this->boundary[2]);
-                $body .= static::$LE;
-                $body .= $this->endBoundary($this->boundary[1]);
-                break;
-            case 'alt_attach':
-                $body .= $mimepre;
-                $body .= $this->textLine('--' . $this->boundary[1]);
-                $body .= $this->headerLine('Content-Type', 'multipart/alternative;');
-                $body .= $this->textLine("\tboundary=\"" . $this->boundary[2] . '"');
-                $body .= static::$LE;
-                $body .= $this->getBoundary($this->boundary[2], $altBodyCharSet, 'text/plain', $altBodyEncoding);
-                $body .= $this->encodeString($this->AltBody, $altBodyEncoding);
-                $body .= static::$LE;
-                $body .= $this->getBoundary($this->boundary[2], $bodyCharSet, 'text/html', $bodyEncoding);
-                $body .= $this->encodeString($this->Body, $bodyEncoding);
-                $body .= static::$LE;
-                if (!empty($this->Ical)) {
-                    $body .= $this->getBoundary($this->boundary[2], '', 'text/calendar; method=REQUEST', '');
-                    $body .= $this->encodeString($this->Ical, $this->Encoding);
-                }
-                $body .= $this->endBoundary($this->boundary[2]);
-                $body .= static::$LE;
-                $body .= $this->attachAll('attachment', $this->boundary[1]);
-                break;
-            case 'alt_inline_attach':
-                $body .= $mimepre;
-                $body .= $this->textLine('--' . $this->boundary[1]);
-                $body .= $this->headerLine('Content-Type', 'multipart/alternative;');
-                $body .= $this->textLine("\tboundary=\"" . $this->boundary[2] . '"');
-                $body .= static::$LE;
-                $body .= $this->getBoundary($this->boundary[2], $altBodyCharSet, 'text/plain', $altBodyEncoding);
-                $body .= $this->encodeString($this->AltBody, $altBodyEncoding);
-                $body .= static::$LE;
-                $body .= $this->textLine('--' . $this->boundary[2]);
-                $body .= $this->headerLine('Content-Type', 'multipart/related;');
-                $body .= $this->textLine("\tboundary=\"" . $this->boundary[3] . '"');
-                $body .= static::$LE;
-                $body .= $this->getBoundary($this->boundary[3], $bodyCharSet, 'text/html', $bodyEncoding);
-                $body .= $this->encodeString($this->Body, $bodyEncoding);
-                $body .= static::$LE;
-                $body .= $this->attachAll('inline', $this->boundary[3]);
-                $body .= static::$LE;
-                $body .= $this->endBoundary($this->boundary[2]);
-                $body .= static::$LE;
-                $body .= $this->attachAll('attachment', $this->boundary[1]);
-                break;
-            default:
-                // Catch case 'plain' and case '', applies to simple `text/plain` and `text/html` body content types
-                //Reset the `Encoding` property in case we changed it for line length reasons
-                $this->Encoding = $bodyEncoding;
-                $body .= $this->encodeString($this->Body, $this->Encoding);
-                break;
-        }
-
-        if ($this->isError()) {
-            $body = '';
-            if ($this->exceptions) {
-                throw new Exception($this->lang('empty_message'), self::STOP_CRITICAL);
-            }
-        } elseif ($this->sign_key_file) {
-            try {
-                if (!defined('PKCS7_TEXT')) {
-                    throw new Exception($this->lang('extension_missing') . 'openssl');
-                }
-                // @TODO would be nice to use php://temp streams here
-                $file = tempnam(sys_get_temp_dir(), 'mail');
-                if (false === file_put_contents($file, $body)) {
-                    throw new Exception($this->lang('signing') . ' Could not write temp file');
-                }
-                $signed = tempnam(sys_get_temp_dir(), 'signed');
-                //Workaround for PHP bug https://bugs.php.net/bug.php?id=69197
-                if (empty($this->sign_extracerts_file)) {
-                    $sign = @openssl_pkcs7_sign(
-                        $file,
-                        $signed,
-                        'file://' . realpath($this->sign_cert_file),
-                        ['file://' . realpath($this->sign_key_file), $this->sign_key_pass],
-                        []
-                    );
-                } else {
-                    $sign = @openssl_pkcs7_sign(
-                        $file,
-                        $signed,
-                        'file://' . realpath($this->sign_cert_file),
-                        ['file://' . realpath($this->sign_key_file), $this->sign_key_pass],
-                        [],
-                        PKCS7_DETACHED,
-                        $this->sign_extracerts_file
-                    );
-                }
-                @unlink($file);
-                if ($sign) {
-                    $body = file_get_contents($signed);
-                    @unlink($signed);
-                    //The message returned by openssl contains both headers and body, so need to split them up
-                    $parts = explode("\n\n", $body, 2);
-                    $this->MIMEHeader .= $parts[0] . static::$LE . static::$LE;
-                    $body = $parts[1];
-                } else {
-                    @unlink($signed);
-                    throw new Exception($this->lang('signing') . openssl_error_string());
-                }
-            } catch (Exception $exc) {
-                $body = '';
-                if ($this->exceptions) {
-                    throw $exc;
-                }
-            }
-        }
-
-        return $body;
-    }
-
-    /**
-     * Return the start of a message boundary.
-     *
-     * @param string $boundary
-     * @param string $charSet
-     * @param string $contentType
-     * @param string $encoding
-     *
-     * @return string
-     */
-    protected function getBoundary($boundary, $charSet, $contentType, $encoding)
-    {
-        $result = '';
-        if ('' == $charSet) {
-            $charSet = $this->CharSet;
-        }
-        if ('' == $contentType) {
-            $contentType = $this->ContentType;
-        }
-        if ('' == $encoding) {
-            $encoding = $this->Encoding;
-        }
-        $result .= $this->textLine('--' . $boundary);
-        $result .= sprintf('Content-Type: %s; charset=%s', $contentType, $charSet);
-        $result .= static::$LE;
-        // RFC1341 part 5 says 7bit is assumed if not specified
-        if ('7bit' != $encoding) {
-            $result .= $this->headerLine('Content-Transfer-Encoding', $encoding);
-        }
-        $result .= static::$LE;
-
-        return $result;
-    }
-
-    /**
-     * Return the end of a message boundary.
-     *
-     * @param string $boundary
-     *
-     * @return string
-     */
-    protected function endBoundary($boundary)
-    {
-        return static::$LE . '--' . $boundary . '--' . static::$LE;
-    }
-
-    /**
-     * Set the message type.
-     * PHPMailer only supports some preset message types, not arbitrary MIME structures.
-     */
-    protected function setMessageType()
-    {
-        $type = [];
-        if ($this->alternativeExists()) {
-            $type[] = 'alt';
-        }
-        if ($this->inlineImageExists()) {
-            $type[] = 'inline';
-        }
-        if ($this->attachmentExists()) {
-            $type[] = 'attach';
-        }
-        $this->message_type = implode('_', $type);
-        if ('' == $this->message_type) {
-            //The 'plain' message_type refers to the message having a single body element, not that it is plain-text
-            $this->message_type = 'plain';
-        }
-    }
-
-    /**
-     * Format a header line.
-     *
-     * @param string     $name
-     * @param string|int $value
-     *
-     * @return string
-     */
-    public function headerLine($name, $value)
-    {
-        return $name . ': ' . $value . static::$LE;
-    }
-
-    /**
-     * Return a formatted mail line.
-     *
-     * @param string $value
-     *
-     * @return string
-     */
-    public function textLine($value)
-    {
-        return $value . static::$LE;
-    }
-
-    /**
-     * Add an attachment from a path on the filesystem.
-     * Never use a user-supplied path to a file!
-     * Returns false if the file could not be found or read.
-     *
-     * @param string $path        Path to the attachment
-     * @param string $name        Overrides the attachment name
-     * @param string $encoding    File encoding (see $Encoding)
-     * @param string $type        File extension (MIME) type
-     * @param string $disposition Disposition to use
-     *
-     * @throws Exception
-     *
-     * @return bool
-     */
-    public function addAttachment($path, $name = '', $encoding = 'base64', $type = '', $disposition = 'attachment')
-    {
-        try {
-            if (!@is_file($path)) {
-                throw new Exception($this->lang('file_access') . $path, self::STOP_CONTINUE);
-            }
-
-            // If a MIME type is not specified, try to work it out from the file name
-            if ('' == $type) {
-                $type = static::filenameToType($path);
-            }
-
-            $filename = basename($path);
-            if ('' == $name) {
-                $name = $filename;
-            }
-
-            $this->attachment[] = [
-                0 => $path,
-                1 => $filename,
-                2 => $name,
-                3 => $encoding,
-                4 => $type,
-                5 => false, // isStringAttachment
-                6 => $disposition,
-                7 => $name,
-            ];
-        } catch (Exception $exc) {
-            $this->setError($exc->getMessage());
-            $this->edebug($exc->getMessage());
-            if ($this->exceptions) {
-                throw $exc;
-            }
-
-            return false;
-        }
-
-        return true;
-    }
-
-    /**
-     * Return the array of attachments.
-     *
-     * @return array
-     */
-    public function getAttachments()
-    {
-        return $this->attachment;
-    }
-
-    /**
-     * Attach all file, string, and binary attachments to the message.
-     * Returns an empty string on failure.
-     *
-     * @param string $disposition_type
-     * @param string $boundary
-     *
-     * @return string
-     */
-    protected function attachAll($disposition_type, $boundary)
-    {
-        // Return text of body
-        $mime = [];
-        $cidUniq = [];
-        $incl = [];
-
-        // Add all attachments
-        foreach ($this->attachment as $attachment) {
-            // Check if it is a valid disposition_filter
-            if ($attachment[6] == $disposition_type) {
-                // Check for string attachment
-                $string = '';
-                $path = '';
-                $bString = $attachment[5];
-                if ($bString) {
-                    $string = $attachment[0];
-                } else {
-                    $path = $attachment[0];
-                }
-
-                $inclhash = hash('sha256', serialize($attachment));
-                if (in_array($inclhash, $incl)) {
-                    continue;
-                }
-                $incl[] = $inclhash;
-                $name = $attachment[2];
-                $encoding = $attachment[3];
-                $type = $attachment[4];
-                $disposition = $attachment[6];
-                $cid = $attachment[7];
-                if ('inline' == $disposition and array_key_exists($cid, $cidUniq)) {
-                    continue;
-                }
-                $cidUniq[$cid] = true;
-
-                $mime[] = sprintf('--%s%s', $boundary, static::$LE);
-                //Only include a filename property if we have one
-                if (!empty($name)) {
-                    $mime[] = sprintf(
-                        'Content-Type: %s; name="%s"%s',
-                        $type,
-                        $this->encodeHeader($this->secureHeader($name)),
-                        static::$LE
-                    );
-                } else {
-                    $mime[] = sprintf(
-                        'Content-Type: %s%s',
-                        $type,
-                        static::$LE
-                    );
-                }
-                // RFC1341 part 5 says 7bit is assumed if not specified
-                if ('7bit' != $encoding) {
-                    $mime[] = sprintf('Content-Transfer-Encoding: %s%s', $encoding, static::$LE);
-                }
-
-                if (!empty($cid)) {
-                    $mime[] = sprintf('Content-ID: <%s>%s', $cid, static::$LE);
-                }
-
-                // If a filename contains any of these chars, it should be quoted,
-                // but not otherwise: RFC2183 & RFC2045 5.1
-                // Fixes a warning in IETF's msglint MIME checker
-                // Allow for bypassing the Content-Disposition header totally
-                if (!(empty($disposition))) {
-                    $encoded_name = $this->encodeHeader($this->secureHeader($name));
-                    if (preg_match('/[ \(\)<>@,;:\\"\/\[\]\?=]/', $encoded_name)) {
-                        $mime[] = sprintf(
-                            'Content-Disposition: %s; filename="%s"%s',
-                            $disposition,
-                            $encoded_name,
-                            static::$LE . static::$LE
-                        );
-                    } else {
-                        if (!empty($encoded_name)) {
-                            $mime[] = sprintf(
-                                'Content-Disposition: %s; filename=%s%s',
-                                $disposition,
-                                $encoded_name,
-                                static::$LE . static::$LE
-                            );
-                        } else {
-                            $mime[] = sprintf(
-                                'Content-Disposition: %s%s',
-                                $disposition,
-                                static::$LE . static::$LE
-                            );
-                        }
-                    }
-                } else {
-                    $mime[] = static::$LE;
-                }
-
-                // Encode as string attachment
-                if ($bString) {
-                    $mime[] = $this->encodeString($string, $encoding);
-                } else {
-                    $mime[] = $this->encodeFile($path, $encoding);
-                }
-                if ($this->isError()) {
-                    return '';
-                }
-                $mime[] = static::$LE;
-            }
-        }
-
-        $mime[] = sprintf('--%s--%s', $boundary, static::$LE);
-
-        return implode('', $mime);
-    }
-
-    /**
-     * Encode a file attachment in requested format.
-     * Returns an empty string on failure.
-     *
-     * @param string $path     The full path to the file
-     * @param string $encoding The encoding to use; one of 'base64', '7bit', '8bit', 'binary', 'quoted-printable'
-     *
-     * @throws Exception
-     *
-     * @return string
-     */
-    protected function encodeFile($path, $encoding = 'base64')
-    {
-        try {
-            if (!file_exists($path)) {
-                throw new Exception($this->lang('file_open') . $path, self::STOP_CONTINUE);
-            }
-            $file_buffer = file_get_contents($path);
-            if (false === $file_buffer) {
-                throw new Exception($this->lang('file_open') . $path, self::STOP_CONTINUE);
-            }
-            $file_buffer = $this->encodeString($file_buffer, $encoding);
-
-            return $file_buffer;
-        } catch (Exception $exc) {
-            $this->setError($exc->getMessage());
-
-            return '';
-        }
-    }
-
-    /**
-     * Encode a string in requested format.
-     * Returns an empty string on failure.
-     *
-     * @param string $str      The text to encode
-     * @param string $encoding The encoding to use; one of 'base64', '7bit', '8bit', 'binary', 'quoted-printable
-     *
-     * @return string
-     */
-    public function encodeString($str, $encoding = 'base64')
-    {
-        $encoded = '';
-        switch (strtolower($encoding)) {
-            case 'base64':
-                $encoded = chunk_split(
-                    base64_encode($str),
-                    static::STD_LINE_LENGTH - strlen(static::$LE),
-                    static::$LE
-                );
-                break;
-            case '7bit':
-            case '8bit':
-                $encoded = static::normalizeBreaks($str);
-                // Make sure it ends with a line break
-                if (substr($encoded, -(strlen(static::$LE))) != static::$LE) {
-                    $encoded .= static::$LE;
-                }
-                break;
-            case 'binary':
-                $encoded = $str;
-                break;
-            case 'quoted-printable':
-                $encoded = $this->encodeQP($str);
-                break;
-            default:
-                $this->setError($this->lang('encoding') . $encoding);
-                break;
-        }
-
-        return $encoded;
-    }
-
-    /**
-     * Encode a header value (not including its label) optimally.
-     * Picks shortest of Q, B, or none. Result includes folding if needed.
-     * See RFC822 definitions for phrase, comment and text positions.
-     *
-     * @param string $str      The header value to encode
-     * @param string $position What context the string will be used in
-     *
-     * @return string
-     */
-    public function encodeHeader($str, $position = 'text')
-    {
-        $matchcount = 0;
-        switch (strtolower($position)) {
-            case 'phrase':
-                if (!preg_match('/[\200-\377]/', $str)) {
-                    // Can't use addslashes as we don't know the value of magic_quotes_sybase
-                    $encoded = addcslashes($str, "\0..\37\177\\\"");
-                    if (($str == $encoded) and !preg_match('/[^A-Za-z0-9!#$%&\'*+\/=?^_`{|}~ -]/', $str)) {
-                        return $encoded;
-                    }
-
-                    return "\"$encoded\"";
-                }
-                $matchcount = preg_match_all('/[^\040\041\043-\133\135-\176]/', $str, $matches);
-                break;
-            /* @noinspection PhpMissingBreakStatementInspection */
-            case 'comment':
-                $matchcount = preg_match_all('/[()"]/', $str, $matches);
-            //fallthrough
-            case 'text':
-            default:
-                $matchcount += preg_match_all('/[\000-\010\013\014\016-\037\177-\377]/', $str, $matches);
-                break;
-        }
-
-        //RFCs specify a maximum line length of 78 chars, however mail() will sometimes
-        //corrupt messages with headers longer than 65 chars. See #818
-        $lengthsub = 'mail' == $this->Mailer ? 13 : 0;
-        $maxlen = static::STD_LINE_LENGTH - $lengthsub;
-        // Try to select the encoding which should produce the shortest output
-        if ($matchcount > strlen($str) / 3) {
-            // More than a third of the content will need encoding, so B encoding will be most efficient
-            $encoding = 'B';
-            //This calculation is:
-            // max line length
-            // - shorten to avoid mail() corruption
-            // - Q/B encoding char overhead ("` =?<charset>?[QB]?<content>?=`")
-            // - charset name length
-            $maxlen = static::STD_LINE_LENGTH - $lengthsub - 8 - strlen($this->CharSet);
-            if ($this->hasMultiBytes($str)) {
-                // Use a custom function which correctly encodes and wraps long
-                // multibyte strings without breaking lines within a character
-                $encoded = $this->base64EncodeWrapMB($str, "\n");
-            } else {
-                $encoded = base64_encode($str);
-                $maxlen -= $maxlen % 4;
-                $encoded = trim(chunk_split($encoded, $maxlen, "\n"));
-            }
-            $encoded = preg_replace('/^(.*)$/m', ' =?' . $this->CharSet . "?$encoding?\\1?=", $encoded);
-        } elseif ($matchcount > 0) {
-            //1 or more chars need encoding, use Q-encode
-            $encoding = 'Q';
-            //Recalc max line length for Q encoding - see comments on B encode
-            $maxlen = static::STD_LINE_LENGTH - $lengthsub - 8 - strlen($this->CharSet);
-            $encoded = $this->encodeQ($str, $position);
-            $encoded = $this->wrapText($encoded, $maxlen, true);
-            $encoded = str_replace('=' . static::$LE, "\n", trim($encoded));
-            $encoded = preg_replace('/^(.*)$/m', ' =?' . $this->CharSet . "?$encoding?\\1?=", $encoded);
-        } elseif (strlen($str) > $maxlen) {
-            //No chars need encoding, but line is too long, so fold it
-            $encoded = trim($this->wrapText($str, $maxlen, false));
-            if ($str == $encoded) {
-                //Wrapping nicely didn't work, wrap hard instead
-                $encoded = trim(chunk_split($str, static::STD_LINE_LENGTH, static::$LE));
-            }
-            $encoded = str_replace(static::$LE, "\n", trim($encoded));
-            $encoded = preg_replace('/^(.*)$/m', ' \\1', $encoded);
-        } else {
-            //No reformatting needed
-            return $str;
-        }
-
-        return trim(static::normalizeBreaks($encoded));
-    }
-
-    /**
-     * Check if a string contains multi-byte characters.
-     *
-     * @param string $str multi-byte text to wrap encode
-     *
-     * @return bool
-     */
-    public function hasMultiBytes($str)
-    {
-        if (function_exists('mb_strlen')) {
-            return strlen($str) > mb_strlen($str, $this->CharSet);
-        }
-
-        // Assume no multibytes (we can't handle without mbstring functions anyway)
-        return false;
-    }
-
-    /**
-     * Does a string contain any 8-bit chars (in any charset)?
-     *
-     * @param string $text
-     *
-     * @return bool
-     */
-    public function has8bitChars($text)
-    {
-        return (bool) preg_match('/[\x80-\xFF]/', $text);
-    }
-
-    /**
-     * Encode and wrap long multibyte strings for mail headers
-     * without breaking lines within a character.
-     * Adapted from a function by paravoid.
-     *
-     * @see http://www.php.net/manual/en/function.mb-encode-mimeheader.php#60283
-     *
-     * @param string $str       multi-byte text to wrap encode
-     * @param string $linebreak string to use as linefeed/end-of-line
-     *
-     * @return string
-     */
-    public function base64EncodeWrapMB($str, $linebreak = null)
-    {
-        $start = '=?' . $this->CharSet . '?B?';
-        $end = '?=';
-        $encoded = '';
-        if (null === $linebreak) {
-            $linebreak = static::$LE;
-        }
-
-        $mb_length = mb_strlen($str, $this->CharSet);
-        // Each line must have length <= 75, including $start and $end
-        $length = 75 - strlen($start) - strlen($end);
-        // Average multi-byte ratio
-        $ratio = $mb_length / strlen($str);
-        // Base64 has a 4:3 ratio
-        $avgLength = floor($length * $ratio * .75);
-
-        for ($i = 0; $i < $mb_length; $i += $offset) {
-            $lookBack = 0;
-            do {
-                $offset = $avgLength - $lookBack;
-                $chunk = mb_substr($str, $i, $offset, $this->CharSet);
-                $chunk = base64_encode($chunk);
-                ++$lookBack;
-            } while (strlen($chunk) > $length);
-            $encoded .= $chunk . $linebreak;
-        }
-
-        // Chomp the last linefeed
-        return substr($encoded, 0, -strlen($linebreak));
-    }
-
-    /**
-     * Encode a string in quoted-printable format.
-     * According to RFC2045 section 6.7.
-     *
-     * @param string $string The text to encode
-     *
-     * @return string
-     */
-    public function encodeQP($string)
-    {
-        return static::normalizeBreaks(quoted_printable_encode($string));
-    }
-
-    /**
-     * Encode a string using Q encoding.
-     *
-     * @see http://tools.ietf.org/html/rfc2047#section-4.2
-     *
-     * @param string $str      the text to encode
-     * @param string $position Where the text is going to be used, see the RFC for what that means
-     *
-     * @return string
-     */
-    public function encodeQ($str, $position = 'text')
-    {
-        // There should not be any EOL in the string
-        $pattern = '';
-        $encoded = str_replace(["\r", "\n"], '', $str);
-        switch (strtolower($position)) {
-            case 'phrase':
-                // RFC 2047 section 5.3
-                $pattern = '^A-Za-z0-9!*+\/ -';
-                break;
-            /*
+				return (bool) preg_match(
+					'/^[a-zA-Z0-9.!#$%&\'*+\/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}' .
+					'[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/sD',
+					$address
+				);
+			case 'php':
+			default:
+				return (bool) filter_var($address, FILTER_VALIDATE_EMAIL);
+		}
+	}
+
+	/**
+	 * Tells whether IDNs (Internationalized Domain Names) are supported or not. This requires the
+	 * `intl` and `mbstring` PHP extensions.
+	 *
+	 * @return bool `true` if required functions for IDN support are present
+	 */
+	public function idnSupported()
+	{
+		return function_exists('idn_to_ascii') and function_exists('mb_convert_encoding');
+	}
+
+	/**
+	 * Converts IDN in given email address to its ASCII form, also known as punycode, if possible.
+	 * Important: Address must be passed in same encoding as currently set in PHPMailer::$CharSet.
+	 * This function silently returns unmodified address if:
+	 * - No conversion is necessary (i.e. domain name is not an IDN, or is already in ASCII form)
+	 * - Conversion to punycode is impossible (e.g. required PHP functions are not available)
+	 *   or fails for any reason (e.g. domain contains characters not allowed in an IDN).
+	 *
+	 * @see    PHPMailer::$CharSet
+	 *
+	 * @param string $address The email address to convert
+	 *
+	 * @return string The encoded address in ASCII form
+	 */
+	public function punyencodeAddress($address)
+	{
+		// Verify we have required functions, CharSet, and at-sign.
+		$pos = strrpos($address, '@');
+		if ($this->idnSupported() and
+			!empty($this->CharSet) and
+			false !== $pos
+		) {
+			$domain = substr($address, ++$pos);
+			// Verify CharSet string is a valid one, and domain properly encoded in this CharSet.
+			if ($this->has8bitChars($domain) and @mb_check_encoding($domain, $this->CharSet)) {
+				$domain = mb_convert_encoding($domain, 'UTF-8', $this->CharSet);
+				//Ignore IDE complaints about this line - method signature changed in PHP 5.4
+				$errorcode = 0;
+				$punycode = idn_to_ascii($domain, $errorcode, INTL_IDNA_VARIANT_UTS46);
+				if (false !== $punycode) {
+					return substr($address, 0, $pos) . $punycode;
+				}
+			}
+		}
+
+		return $address;
+	}
+
+	/**
+	 * Create a message and send it.
+	 * Uses the sending method specified by $Mailer.
+	 *
+	 * @throws Exception
+	 *
+	 * @return bool false on error - See the ErrorInfo property for details of the error
+	 */
+	public function send()
+	{
+		try {
+			if (!$this->preSend()) {
+				return false;
+			}
+
+			return $this->postSend();
+		} catch (Exception $exc) {
+			$this->mailHeader = '';
+			$this->setError($exc->getMessage());
+			if ($this->exceptions) {
+				throw $exc;
+			}
+
+			return false;
+		}
+	}
+
+	/**
+	 * Prepare a message for sending.
+	 *
+	 * @throws Exception
+	 *
+	 * @return bool
+	 */
+	public function preSend()
+	{
+		if ('smtp' == $this->Mailer or
+			('mail' == $this->Mailer and stripos(PHP_OS, 'WIN') === 0)
+		) {
+			//SMTP mandates RFC-compliant line endings
+			//and it's also used with mail() on Windows
+			static::setLE("\r\n");
+		} else {
+			//Maintain backward compatibility with legacy Linux command line mailers
+			static::setLE(PHP_EOL);
+		}
+		//Check for buggy PHP versions that add a header with an incorrect line break
+		if (ini_get('mail.add_x_header') == 1
+			and 'mail' == $this->Mailer
+			and stripos(PHP_OS, 'WIN') === 0
+			and ((version_compare(PHP_VERSION, '7.0.0', '>=')
+					and version_compare(PHP_VERSION, '7.0.17', '<'))
+				or (version_compare(PHP_VERSION, '7.1.0', '>=')
+					and version_compare(PHP_VERSION, '7.1.3', '<')))
+		) {
+			trigger_error(
+				'Your version of PHP is affected by a bug that may result in corrupted messages.' .
+				' To fix it, switch to sending using SMTP, disable the mail.add_x_header option in' .
+				' your php.ini, switch to MacOS or Linux, or upgrade your PHP to version 7.0.17+ or 7.1.3+.',
+				E_USER_WARNING
+			);
+		}
+
+		try {
+			$this->error_count = 0; // Reset errors
+			$this->mailHeader = '';
+
+			// Dequeue recipient and Reply-To addresses with IDN
+			foreach (array_merge($this->RecipientsQueue, $this->ReplyToQueue) as $params) {
+				$params[1] = $this->punyencodeAddress($params[1]);
+				call_user_func_array([$this, 'addAnAddress'], $params);
+			}
+			if (count($this->to) + count($this->cc) + count($this->bcc) < 1) {
+				throw new Exception($this->lang('provide_address'), self::STOP_CRITICAL);
+			}
+
+			// Validate From, Sender, and ConfirmReadingTo addresses
+			foreach (['From', 'Sender', 'ConfirmReadingTo'] as $address_kind) {
+				$this->$address_kind = trim($this->$address_kind);
+				if (empty($this->$address_kind)) {
+					continue;
+				}
+				$this->$address_kind = $this->punyencodeAddress($this->$address_kind);
+				if (!static::validateAddress($this->$address_kind)) {
+					$error_message = $this->lang('invalid_address') . ' (punyEncode) ' . $this->$address_kind;
+					$this->setError($error_message);
+					$this->edebug($error_message);
+					if ($this->exceptions) {
+						throw new Exception($error_message);
+					}
+
+					return false;
+				}
+			}
+
+			// Set whether the message is multipart/alternative
+			if ($this->alternativeExists()) {
+				$this->ContentType = 'multipart/alternative';
+			}
+
+			$this->setMessageType();
+			// Refuse to send an empty message unless we are specifically allowing it
+			if (!$this->AllowEmpty and empty($this->Body)) {
+				throw new Exception($this->lang('empty_message'), self::STOP_CRITICAL);
+			}
+
+			//Trim subject consistently
+			$this->Subject = trim($this->Subject);
+			// Create body before headers in case body makes changes to headers (e.g. altering transfer encoding)
+			$this->MIMEHeader = '';
+			$this->MIMEBody = $this->createBody();
+			// createBody may have added some headers, so retain them
+			$tempheaders = $this->MIMEHeader;
+			$this->MIMEHeader = $this->createHeader();
+			$this->MIMEHeader .= $tempheaders;
+
+			// To capture the complete message when using mail(), create
+			// an extra header list which createHeader() doesn't fold in
+			if ('mail' == $this->Mailer) {
+				if (count($this->to) > 0) {
+					$this->mailHeader .= $this->addrAppend('To', $this->to);
+				} else {
+					$this->mailHeader .= $this->headerLine('To', 'undisclosed-recipients:;');
+				}
+				$this->mailHeader .= $this->headerLine(
+					'Subject',
+					$this->encodeHeader($this->secureHeader($this->Subject))
+				);
+			}
+
+			// Sign with DKIM if enabled
+			if (!empty($this->DKIM_domain)
+				and !empty($this->DKIM_selector)
+				and (!empty($this->DKIM_private_string)
+					or (!empty($this->DKIM_private) and file_exists($this->DKIM_private))
+				)
+			) {
+				$header_dkim = $this->DKIM_Add(
+					$this->MIMEHeader . $this->mailHeader,
+					$this->encodeHeader($this->secureHeader($this->Subject)),
+					$this->MIMEBody
+				);
+				$this->MIMEHeader = rtrim($this->MIMEHeader, "\r\n ") . static::$LE .
+					static::normalizeBreaks($header_dkim) . static::$LE;
+			}
+
+			return true;
+		} catch (Exception $exc) {
+			$this->setError($exc->getMessage());
+			if ($this->exceptions) {
+				throw $exc;
+			}
+
+			return false;
+		}
+	}
+
+	/**
+	 * Actually send a message via the selected mechanism.
+	 *
+	 * @throws Exception
+	 *
+	 * @return bool
+	 */
+	public function postSend()
+	{
+		try {
+			// Choose the mailer and send through it
+			switch ($this->Mailer) {
+				case 'sendmail':
+				case 'qmail':
+					return $this->sendmailSend($this->MIMEHeader, $this->MIMEBody);
+				case 'smtp':
+					return $this->smtpSend($this->MIMEHeader, $this->MIMEBody);
+				case 'mail':
+					return $this->mailSend($this->MIMEHeader, $this->MIMEBody);
+				default:
+					$sendMethod = $this->Mailer . 'Send';
+					if (method_exists($this, $sendMethod)) {
+						return $this->$sendMethod($this->MIMEHeader, $this->MIMEBody);
+					}
+
+					return $this->mailSend($this->MIMEHeader, $this->MIMEBody);
+			}
+		} catch (Exception $exc) {
+			$this->setError($exc->getMessage());
+			$this->edebug($exc->getMessage());
+			if ($this->exceptions) {
+				throw $exc;
+			}
+		}
+
+		return false;
+	}
+
+	/**
+	 * Send mail using the $Sendmail program.
+	 *
+	 * @see    PHPMailer::$Sendmail
+	 *
+	 * @param string $header The message headers
+	 * @param string $body   The message body
+	 *
+	 * @throws Exception
+	 *
+	 * @return bool
+	 */
+	protected function sendmailSend($header, $body)
+	{
+		// CVE-2016-10033, CVE-2016-10045: Don't pass -f if characters will be escaped.
+		if (!empty($this->Sender) and self::isShellSafe($this->Sender)) {
+			if ('qmail' == $this->Mailer) {
+				$sendmailFmt = '%s -f%s';
+			} else {
+				$sendmailFmt = '%s -oi -f%s -t';
+			}
+		} else {
+			if ('qmail' == $this->Mailer) {
+				$sendmailFmt = '%s';
+			} else {
+				$sendmailFmt = '%s -oi -t';
+			}
+		}
+
+		$sendmail = sprintf($sendmailFmt, escapeshellcmd($this->Sendmail), $this->Sender);
+
+		if ($this->SingleTo) {
+			foreach ($this->SingleToArray as $toAddr) {
+				$mail = @popen($sendmail, 'w');
+				if (!$mail) {
+					throw new Exception($this->lang('execute') . $this->Sendmail, self::STOP_CRITICAL);
+				}
+				fwrite($mail, 'To: ' . $toAddr . "\n");
+				fwrite($mail, $header);
+				fwrite($mail, $body);
+				$result = pclose($mail);
+				$this->doCallback(
+					($result == 0),
+					[$toAddr],
+					$this->cc,
+					$this->bcc,
+					$this->Subject,
+					$body,
+					$this->From,
+					[]
+				);
+				if (0 !== $result) {
+					throw new Exception($this->lang('execute') . $this->Sendmail, self::STOP_CRITICAL);
+				}
+			}
+		} else {
+			$mail = @popen($sendmail, 'w');
+			if (!$mail) {
+				throw new Exception($this->lang('execute') . $this->Sendmail, self::STOP_CRITICAL);
+			}
+			fwrite($mail, $header);
+			fwrite($mail, $body);
+			$result = pclose($mail);
+			$this->doCallback(
+				($result == 0),
+				$this->to,
+				$this->cc,
+				$this->bcc,
+				$this->Subject,
+				$body,
+				$this->From,
+				[]
+			);
+			if (0 !== $result) {
+				throw new Exception($this->lang('execute') . $this->Sendmail, self::STOP_CRITICAL);
+			}
+		}
+
+		return true;
+	}
+
+	/**
+	 * Fix CVE-2016-10033 and CVE-2016-10045 by disallowing potentially unsafe shell characters.
+	 * Note that escapeshellarg and escapeshellcmd are inadequate for our purposes, especially on Windows.
+	 *
+	 * @see https://github.com/PHPMailer/PHPMailer/issues/924 CVE-2016-10045 bug report
+	 *
+	 * @param string $string The string to be validated
+	 *
+	 * @return bool
+	 */
+	protected static function isShellSafe($string)
+	{
+		// Future-proof
+		if (escapeshellcmd($string) !== $string
+			or !in_array(escapeshellarg($string), ["'$string'", "\"$string\""])
+		) {
+			return false;
+		}
+
+		$length = strlen($string);
+
+		for ($i = 0; $i < $length; ++$i) {
+			$c = $string[$i];
+
+			// All other characters have a special meaning in at least one common shell, including = and +.
+			// Full stop (.) has a special meaning in cmd.exe, but its impact should be negligible here.
+			// Note that this does permit non-Latin alphanumeric characters based on the current locale.
+			if (!ctype_alnum($c) && strpos('@_-.', $c) === false) {
+				return false;
+			}
+		}
+
+		return true;
+	}
+
+	/**
+	 * Send mail using the PHP mail() function.
+	 *
+	 * @see    http://www.php.net/manual/en/book.mail.php
+	 *
+	 * @param string $header The message headers
+	 * @param string $body   The message body
+	 *
+	 * @throws Exception
+	 *
+	 * @return bool
+	 */
+	protected function mailSend($header, $body)
+	{
+		$toArr = [];
+		foreach ($this->to as $toaddr) {
+			$toArr[] = $this->addrFormat($toaddr);
+		}
+		$to = implode(', ', $toArr);
+
+		$params = null;
+		//This sets the SMTP envelope sender which gets turned into a return-path header by the receiver
+		if (!empty($this->Sender) and static::validateAddress($this->Sender)) {
+			//A space after `-f` is optional, but there is a long history of its presence
+			//causing problems, so we don't use one
+			//Exim docs: http://www.exim.org/exim-html-current/doc/html/spec_html/ch-the_exim_command_line.html
+			//Sendmail docs: http://www.sendmail.org/~ca/email/man/sendmail.html
+			//Qmail docs: http://www.qmail.org/man/man8/qmail-inject.html
+			//Example problem: https://www.drupal.org/node/1057954
+			// CVE-2016-10033, CVE-2016-10045: Don't pass -f if characters will be escaped.
+			if (self::isShellSafe($this->Sender)) {
+				$params = sprintf('-f%s', $this->Sender);
+			}
+		}
+		if (!empty($this->Sender) and static::validateAddress($this->Sender)) {
+			$old_from = ini_get('sendmail_from');
+			ini_set('sendmail_from', $this->Sender);
+		}
+		$result = false;
+		if ($this->SingleTo and count($toArr) > 1) {
+			foreach ($toArr as $toAddr) {
+				$result = $this->mailPassthru($toAddr, $this->Subject, $body, $header, $params);
+				$this->doCallback($result, [$toAddr], $this->cc, $this->bcc, $this->Subject, $body, $this->From, []);
+			}
+		} else {
+			$result = $this->mailPassthru($to, $this->Subject, $body, $header, $params);
+			$this->doCallback($result, $this->to, $this->cc, $this->bcc, $this->Subject, $body, $this->From, []);
+		}
+		if (isset($old_from)) {
+			ini_set('sendmail_from', $old_from);
+		}
+		if (!$result) {
+			throw new Exception($this->lang('instantiate'), self::STOP_CRITICAL);
+		}
+
+		return true;
+	}
+
+	/**
+	 * Get an instance to use for SMTP operations.
+	 * Override this function to load your own SMTP implementation,
+	 * or set one with setSMTPInstance.
+	 *
+	 * @return SMTP
+	 */
+	public function getSMTPInstance()
+	{
+		if (!is_object($this->smtp)) {
+			$this->smtp = new SMTP();
+		}
+
+		return $this->smtp;
+	}
+
+	/**
+	 * Provide an instance to use for SMTP operations.
+	 *
+	 * @param SMTP $smtp
+	 *
+	 * @return SMTP
+	 */
+	public function setSMTPInstance(SMTP $smtp)
+	{
+		$this->smtp = $smtp;
+
+		return $this->smtp;
+	}
+
+	/**
+	 * Send mail via SMTP.
+	 * Returns false if there is a bad MAIL FROM, RCPT, or DATA input.
+	 *
+	 * @see PHPMailer::setSMTPInstance() to use a different class.
+	 *
+	 * @uses \PHPMailer\PHPMailer\SMTP
+	 *
+	 * @param string $header The message headers
+	 * @param string $body   The message body
+	 *
+	 * @throws Exception
+	 *
+	 * @return bool
+	 */
+	protected function smtpSend($header, $body)
+	{
+		$bad_rcpt = [];
+		if (!$this->smtpConnect($this->SMTPOptions)) {
+			throw new Exception($this->lang('smtp_connect_failed'), self::STOP_CRITICAL);
+		}
+		//Sender already validated in preSend()
+		if ('' == $this->Sender) {
+			$smtp_from = $this->From;
+		} else {
+			$smtp_from = $this->Sender;
+		}
+		if (!$this->smtp->mail($smtp_from)) {
+			$this->setError($this->lang('from_failed') . $smtp_from . ' : ' . implode(',', $this->smtp->getError()));
+			throw new Exception($this->ErrorInfo, self::STOP_CRITICAL);
+		}
+
+		$callbacks = [];
+		// Attempt to send to all recipients
+		foreach ([$this->to, $this->cc, $this->bcc] as $togroup) {
+			foreach ($togroup as $to) {
+				if (!$this->smtp->recipient($to[0])) {
+					$error = $this->smtp->getError();
+					$bad_rcpt[] = ['to' => $to[0], 'error' => $error['detail']];
+					$isSent = false;
+				} else {
+					$isSent = true;
+				}
+
+				$callbacks[] = ['issent'=>$isSent, 'to'=>$to[0]];
+			}
+		}
+
+		// Only send the DATA command if we have viable recipients
+		if ((count($this->all_recipients) > count($bad_rcpt)) and !$this->smtp->data($header . $body)) {
+			throw new Exception($this->lang('data_not_accepted'), self::STOP_CRITICAL);
+		}
+
+		$smtp_transaction_id = $this->smtp->getLastTransactionID();
+
+		if ($this->SMTPKeepAlive) {
+			$this->smtp->reset();
+		} else {
+			$this->smtp->quit();
+			$this->smtp->close();
+		}
+
+		foreach ($callbacks as $cb) {
+			$this->doCallback(
+				$cb['issent'],
+				[$cb['to']],
+				[],
+				[],
+				$this->Subject,
+				$body,
+				$this->From,
+				['smtp_transaction_id' => $smtp_transaction_id]
+			);
+		}
+
+		//Create error message for any bad addresses
+		if (count($bad_rcpt) > 0) {
+			$errstr = '';
+			foreach ($bad_rcpt as $bad) {
+				$errstr .= $bad['to'] . ': ' . $bad['error'];
+			}
+			throw new Exception(
+				$this->lang('recipients_failed') . $errstr,
+				self::STOP_CONTINUE
+			);
+		}
+
+		return true;
+	}
+
+	/**
+	 * Initiate a connection to an SMTP server.
+	 * Returns false if the operation failed.
+	 *
+	 * @param array $options An array of options compatible with stream_context_create()
+	 *
+	 * @throws Exception
+	 *
+	 * @uses \PHPMailer\PHPMailer\SMTP
+	 *
+	 * @return bool
+	 */
+	public function smtpConnect($options = null)
+	{
+		if (null === $this->smtp) {
+			$this->smtp = $this->getSMTPInstance();
+		}
+
+		//If no options are provided, use whatever is set in the instance
+		if (null === $options) {
+			$options = $this->SMTPOptions;
+		}
+
+		// Already connected?
+		if ($this->smtp->connected()) {
+			return true;
+		}
+
+		$this->smtp->setTimeout($this->Timeout);
+		$this->smtp->setDebugLevel($this->SMTPDebug);
+		$this->smtp->setDebugOutput($this->Debugoutput);
+		$this->smtp->setVerp($this->do_verp);
+		$hosts = explode(';', $this->Host);
+		$lastexception = null;
+
+		foreach ($hosts as $hostentry) {
+			$hostinfo = [];
+			if (!preg_match(
+				'/^((ssl|tls):\/\/)*([a-zA-Z0-9\.-]*|\[[a-fA-F0-9:]+\]):?([0-9]*)$/',
+				trim($hostentry),
+				$hostinfo
+			)) {
+				static::edebug($this->lang('connect_host') . ' ' . $hostentry);
+				// Not a valid host entry
+				continue;
+			}
+			// $hostinfo[2]: optional ssl or tls prefix
+			// $hostinfo[3]: the hostname
+			// $hostinfo[4]: optional port number
+			// The host string prefix can temporarily override the current setting for SMTPSecure
+			// If it's not specified, the default value is used
+
+			//Check the host name is a valid name or IP address before trying to use it
+			if (!static::isValidHost($hostinfo[3])) {
+				static::edebug($this->lang('connect_host') . ' ' . $hostentry);
+				continue;
+			}
+			$prefix = '';
+			$secure = $this->SMTPSecure;
+			$tls = ('tls' == $this->SMTPSecure);
+			if ('ssl' == $hostinfo[2] or ('' == $hostinfo[2] and 'ssl' == $this->SMTPSecure)) {
+				$prefix = 'ssl://';
+				$tls = false; // Can't have SSL and TLS at the same time
+				$secure = 'ssl';
+			} elseif ('tls' == $hostinfo[2]) {
+				$tls = true;
+				// tls doesn't use a prefix
+				$secure = 'tls';
+			}
+			//Do we need the OpenSSL extension?
+			$sslext = defined('OPENSSL_ALGO_SHA256');
+			if ('tls' === $secure or 'ssl' === $secure) {
+				//Check for an OpenSSL constant rather than using extension_loaded, which is sometimes disabled
+				if (!$sslext) {
+					throw new Exception($this->lang('extension_missing') . 'openssl', self::STOP_CRITICAL);
+				}
+			}
+			$host = $hostinfo[3];
+			$port = $this->Port;
+			$tport = (int) $hostinfo[4];
+			if ($tport > 0 and $tport < 65536) {
+				$port = $tport;
+			}
+			if ($this->smtp->connect($prefix . $host, $port, $this->Timeout, $options)) {
+				try {
+					if ($this->Helo) {
+						$hello = $this->Helo;
+					} else {
+						$hello = $this->serverHostname();
+					}
+					$this->smtp->hello($hello);
+					//Automatically enable TLS encryption if:
+					// * it's not disabled
+					// * we have openssl extension
+					// * we are not already using SSL
+					// * the server offers STARTTLS
+					if ($this->SMTPAutoTLS and $sslext and $secure != 'ssl' and $this->smtp->getServerExt('STARTTLS')) {
+						$tls = true;
+					}
+					if ($tls) {
+						if (!$this->smtp->startTLS()) {
+							throw new Exception($this->lang('connect_host'));
+						}
+						// We must resend EHLO after TLS negotiation
+						$this->smtp->hello($hello);
+					}
+					if ($this->SMTPAuth) {
+						if (!$this->smtp->authenticate(
+							$this->Username,
+							$this->Password,
+							$this->AuthType,
+							$this->oauth
+						)
+						) {
+							throw new Exception($this->lang('authenticate'));
+						}
+					}
+
+					return true;
+				} catch (Exception $exc) {
+					$lastexception = $exc;
+					$this->edebug($exc->getMessage());
+					// We must have connected, but then failed TLS or Auth, so close connection nicely
+					$this->smtp->quit();
+				}
+			}
+		}
+		// If we get here, all connection attempts have failed, so close connection hard
+		$this->smtp->close();
+		// As we've caught all exceptions, just report whatever the last one was
+		if ($this->exceptions and null !== $lastexception) {
+			throw $lastexception;
+		}
+
+		return false;
+	}
+
+	/**
+	 * Close the active SMTP session if one exists.
+	 */
+	public function smtpClose()
+	{
+		if (null !== $this->smtp) {
+			if ($this->smtp->connected()) {
+				$this->smtp->quit();
+				$this->smtp->close();
+			}
+		}
+	}
+
+	/**
+	 * Set the language for error messages.
+	 * Returns false if it cannot load the language file.
+	 * The default language is English.
+	 *
+	 * @param string $langcode  ISO 639-1 2-character language code (e.g. French is "fr")
+	 * @param string $lang_path Path to the language file directory, with trailing separator (slash)
+	 *
+	 * @return bool
+	 */
+	public function setLanguage($langcode = 'en', $lang_path = '')
+	{
+		// Backwards compatibility for renamed language codes
+		$renamed_langcodes = [
+			'br' => 'pt_br',
+			'cz' => 'cs',
+			'dk' => 'da',
+			'no' => 'nb',
+			'se' => 'sv',
+			'sr' => 'rs',
+		];
+
+		if (isset($renamed_langcodes[$langcode])) {
+			$langcode = $renamed_langcodes[$langcode];
+		}
+
+		// Define full set of translatable strings in English
+		$PHPMAILER_LANG = [
+			'authenticate' => 'SMTP Error: Could not authenticate.',
+			'connect_host' => 'SMTP Error: Could not connect to SMTP host.',
+			'data_not_accepted' => 'SMTP Error: data not accepted.',
+			'empty_message' => 'Message body empty',
+			'encoding' => 'Unknown encoding: ',
+			'execute' => 'Could not execute: ',
+			'file_access' => 'Could not access file: ',
+			'file_open' => 'File Error: Could not open file: ',
+			'from_failed' => 'The following From address failed: ',
+			'instantiate' => 'Could not instantiate mail function.',
+			'invalid_address' => 'Invalid address: ',
+			'mailer_not_supported' => ' mailer is not supported.',
+			'provide_address' => 'You must provide at least one recipient email address.',
+			'recipients_failed' => 'SMTP Error: The following recipients failed: ',
+			'signing' => 'Signing Error: ',
+			'smtp_connect_failed' => 'SMTP connect() failed.',
+			'smtp_error' => 'SMTP server error: ',
+			'variable_set' => 'Cannot set or reset variable: ',
+			'extension_missing' => 'Extension missing: ',
+		];
+		if (empty($lang_path)) {
+			// Calculate an absolute path so it can work if CWD is not here
+			$lang_path = __DIR__ . DIRECTORY_SEPARATOR . 'language' . DIRECTORY_SEPARATOR;
+		}
+		//Validate $langcode
+		if (!preg_match('/^[a-z]{2}(?:_[a-zA-Z]{2})?$/', $langcode)) {
+			$langcode = 'en';
+		}
+		$foundlang = true;
+		$lang_file = $lang_path . 'phpmailer.lang-' . $langcode . '.php';
+		// There is no English translation file
+		if ('en' != $langcode) {
+			// Make sure language file path is readable
+			if (!file_exists($lang_file)) {
+				$foundlang = false;
+			} else {
+				// Overwrite language-specific strings.
+				// This way we'll never have missing translation keys.
+				$foundlang = include $lang_file;
+			}
+		}
+		$this->language = $PHPMAILER_LANG;
+
+		return (bool) $foundlang; // Returns false if language not found
+	}
+
+	/**
+	 * Get the array of strings for the current language.
+	 *
+	 * @return array
+	 */
+	public function getTranslations()
+	{
+		return $this->language;
+	}
+
+	/**
+	 * Create recipient headers.
+	 *
+	 * @param string $type
+	 * @param array  $addr An array of recipients,
+	 *                     where each recipient is a 2-element indexed array with element 0 containing an address
+	 *                     and element 1 containing a name, like:
+	 *                     [['joe@example.com', 'Joe User'], ['zoe@example.com', 'Zoe User']]
+	 *
+	 * @return string
+	 */
+	public function addrAppend($type, $addr)
+	{
+		$addresses = [];
+		foreach ($addr as $address) {
+			$addresses[] = $this->addrFormat($address);
+		}
+
+		return $type . ': ' . implode(', ', $addresses) . static::$LE;
+	}
+
+	/**
+	 * Format an address for use in a message header.
+	 *
+	 * @param array $addr A 2-element indexed array, element 0 containing an address, element 1 containing a name like
+	 *                    ['joe@example.com', 'Joe User']
+	 *
+	 * @return string
+	 */
+	public function addrFormat($addr)
+	{
+		if (empty($addr[1])) { // No name provided
+			return $this->secureHeader($addr[0]);
+		}
+
+		return $this->encodeHeader($this->secureHeader($addr[1]), 'phrase') . ' <' . $this->secureHeader(
+				$addr[0]
+			) . '>';
+	}
+
+	/**
+	 * Word-wrap message.
+	 * For use with mailers that do not automatically perform wrapping
+	 * and for quoted-printable encoded messages.
+	 * Original written by philippe.
+	 *
+	 * @param string $message The message to wrap
+	 * @param int    $length  The line length to wrap to
+	 * @param bool   $qp_mode Whether to run in Quoted-Printable mode
+	 *
+	 * @return string
+	 */
+	public function wrapText($message, $length, $qp_mode = false)
+	{
+		if ($qp_mode) {
+			$soft_break = sprintf(' =%s', static::$LE);
+		} else {
+			$soft_break = static::$LE;
+		}
+		// If utf-8 encoding is used, we will need to make sure we don't
+		// split multibyte characters when we wrap
+		$is_utf8 = (strtolower($this->CharSet) == 'utf-8');
+		$lelen = strlen(static::$LE);
+		$crlflen = strlen(static::$LE);
+
+		$message = static::normalizeBreaks($message);
+		//Remove a trailing line break
+		if (substr($message, -$lelen) == static::$LE) {
+			$message = substr($message, 0, -$lelen);
+		}
+
+		//Split message into lines
+		$lines = explode(static::$LE, $message);
+		//Message will be rebuilt in here
+		$message = '';
+		foreach ($lines as $line) {
+			$words = explode(' ', $line);
+			$buf = '';
+			$firstword = true;
+			foreach ($words as $word) {
+				if ($qp_mode and (strlen($word) > $length)) {
+					$space_left = $length - strlen($buf) - $crlflen;
+					if (!$firstword) {
+						if ($space_left > 20) {
+							$len = $space_left;
+							if ($is_utf8) {
+								$len = $this->utf8CharBoundary($word, $len);
+							} elseif (substr($word, $len - 1, 1) == '=') {
+								--$len;
+							} elseif (substr($word, $len - 2, 1) == '=') {
+								$len -= 2;
+							}
+							$part = substr($word, 0, $len);
+							$word = substr($word, $len);
+							$buf .= ' ' . $part;
+							$message .= $buf . sprintf('=%s', static::$LE);
+						} else {
+							$message .= $buf . $soft_break;
+						}
+						$buf = '';
+					}
+					while (strlen($word) > 0) {
+						if ($length <= 0) {
+							break;
+						}
+						$len = $length;
+						if ($is_utf8) {
+							$len = $this->utf8CharBoundary($word, $len);
+						} elseif (substr($word, $len - 1, 1) == '=') {
+							--$len;
+						} elseif (substr($word, $len - 2, 1) == '=') {
+							$len -= 2;
+						}
+						$part = substr($word, 0, $len);
+						$word = substr($word, $len);
+
+						if (strlen($word) > 0) {
+							$message .= $part . sprintf('=%s', static::$LE);
+						} else {
+							$buf = $part;
+						}
+					}
+				} else {
+					$buf_o = $buf;
+					if (!$firstword) {
+						$buf .= ' ';
+					}
+					$buf .= $word;
+
+					if (strlen($buf) > $length and $buf_o != '') {
+						$message .= $buf_o . $soft_break;
+						$buf = $word;
+					}
+				}
+				$firstword = false;
+			}
+			$message .= $buf . static::$LE;
+		}
+
+		return $message;
+	}
+
+	/**
+	 * Find the last character boundary prior to $maxLength in a utf-8
+	 * quoted-printable encoded string.
+	 * Original written by Colin Brown.
+	 *
+	 * @param string $encodedText utf-8 QP text
+	 * @param int    $maxLength   Find the last character boundary prior to this length
+	 *
+	 * @return int
+	 */
+	public function utf8CharBoundary($encodedText, $maxLength)
+	{
+		$foundSplitPos = false;
+		$lookBack = 3;
+		while (!$foundSplitPos) {
+			$lastChunk = substr($encodedText, $maxLength - $lookBack, $lookBack);
+			$encodedCharPos = strpos($lastChunk, '=');
+			if (false !== $encodedCharPos) {
+				// Found start of encoded character byte within $lookBack block.
+				// Check the encoded byte value (the 2 chars after the '=')
+				$hex = substr($encodedText, $maxLength - $lookBack + $encodedCharPos + 1, 2);
+				$dec = hexdec($hex);
+				if ($dec < 128) {
+					// Single byte character.
+					// If the encoded char was found at pos 0, it will fit
+					// otherwise reduce maxLength to start of the encoded char
+					if ($encodedCharPos > 0) {
+						$maxLength -= $lookBack - $encodedCharPos;
+					}
+					$foundSplitPos = true;
+				} elseif ($dec >= 192) {
+					// First byte of a multi byte character
+					// Reduce maxLength to split at start of character
+					$maxLength -= $lookBack - $encodedCharPos;
+					$foundSplitPos = true;
+				} elseif ($dec < 192) {
+					// Middle byte of a multi byte character, look further back
+					$lookBack += 3;
+				}
+			} else {
+				// No encoded character found
+				$foundSplitPos = true;
+			}
+		}
+
+		return $maxLength;
+	}
+
+	/**
+	 * Apply word wrapping to the message body.
+	 * Wraps the message body to the number of chars set in the WordWrap property.
+	 * You should only do this to plain-text bodies as wrapping HTML tags may break them.
+	 * This is called automatically by createBody(), so you don't need to call it yourself.
+	 */
+	public function setWordWrap()
+	{
+		if ($this->WordWrap < 1) {
+			return;
+		}
+
+		switch ($this->message_type) {
+			case 'alt':
+			case 'alt_inline':
+			case 'alt_attach':
+			case 'alt_inline_attach':
+				$this->AltBody = $this->wrapText($this->AltBody, $this->WordWrap);
+				break;
+			default:
+				$this->Body = $this->wrapText($this->Body, $this->WordWrap);
+				break;
+		}
+	}
+
+	/**
+	 * Assemble message headers.
+	 *
+	 * @return string The assembled headers
+	 */
+	public function createHeader()
+	{
+		$result = '';
+
+		$result .= $this->headerLine('Date', '' == $this->MessageDate ? self::rfcDate() : $this->MessageDate);
+
+		// To be created automatically by mail()
+		if ($this->SingleTo) {
+			if ('mail' != $this->Mailer) {
+				foreach ($this->to as $toaddr) {
+					$this->SingleToArray[] = $this->addrFormat($toaddr);
+				}
+			}
+		} else {
+			if (count($this->to) > 0) {
+				if ('mail' != $this->Mailer) {
+					$result .= $this->addrAppend('To', $this->to);
+				}
+			} elseif (count($this->cc) == 0) {
+				$result .= $this->headerLine('To', 'undisclosed-recipients:;');
+			}
+		}
+
+		$result .= $this->addrAppend('From', [[trim($this->From), $this->FromName]]);
+
+		// sendmail and mail() extract Cc from the header before sending
+		if (count($this->cc) > 0) {
+			$result .= $this->addrAppend('Cc', $this->cc);
+		}
+
+		// sendmail and mail() extract Bcc from the header before sending
+		if ((
+				'sendmail' == $this->Mailer or 'qmail' == $this->Mailer or 'mail' == $this->Mailer
+			)
+			and count($this->bcc) > 0
+		) {
+			$result .= $this->addrAppend('Bcc', $this->bcc);
+		}
+
+		if (count($this->ReplyTo) > 0) {
+			$result .= $this->addrAppend('Reply-To', $this->ReplyTo);
+		}
+
+		// mail() sets the subject itself
+		if ('mail' != $this->Mailer) {
+			$result .= $this->headerLine('Subject', $this->encodeHeader($this->secureHeader($this->Subject)));
+		}
+
+		// Only allow a custom message ID if it conforms to RFC 5322 section 3.6.4
+		// https://tools.ietf.org/html/rfc5322#section-3.6.4
+		if ('' != $this->MessageID and preg_match('/^<.*@.*>$/', $this->MessageID)) {
+			$this->lastMessageID = $this->MessageID;
+		} else {
+			$this->lastMessageID = sprintf('<%s@%s>', $this->uniqueid, $this->serverHostname());
+		}
+		$result .= $this->headerLine('Message-ID', $this->lastMessageID);
+		if (null !== $this->Priority) {
+			$result .= $this->headerLine('X-Priority', $this->Priority);
+		}
+		if ('' == $this->XMailer) {
+			$result .= $this->headerLine(
+				'X-Mailer',
+				'PHPMailer ' . self::VERSION . ' (https://github.com/PHPMailer/PHPMailer)'
+			);
+		} else {
+			$myXmailer = trim($this->XMailer);
+			if ($myXmailer) {
+				$result .= $this->headerLine('X-Mailer', $myXmailer);
+			}
+		}
+
+		if ('' != $this->ConfirmReadingTo) {
+			$result .= $this->headerLine('Disposition-Notification-To', '<' . $this->ConfirmReadingTo . '>');
+		}
+
+		// Add custom headers
+		foreach ($this->CustomHeader as $header) {
+			$result .= $this->headerLine(
+				trim($header[0]),
+				$this->encodeHeader(trim($header[1]))
+			);
+		}
+		if (!$this->sign_key_file) {
+			$result .= $this->headerLine('MIME-Version', '1.0');
+			$result .= $this->getMailMIME();
+		}
+
+		return $result;
+	}
+
+	/**
+	 * Get the message MIME type headers.
+	 *
+	 * @return string
+	 */
+	public function getMailMIME()
+	{
+		$result = '';
+		$ismultipart = true;
+		switch ($this->message_type) {
+			case 'inline':
+				$result .= $this->headerLine('Content-Type', 'multipart/related;');
+				$result .= $this->textLine("\tboundary=\"" . $this->boundary[1] . '"');
+				break;
+			case 'attach':
+			case 'inline_attach':
+			case 'alt_attach':
+			case 'alt_inline_attach':
+				$result .= $this->headerLine('Content-Type', 'multipart/mixed;');
+				$result .= $this->textLine("\tboundary=\"" . $this->boundary[1] . '"');
+				break;
+			case 'alt':
+			case 'alt_inline':
+				$result .= $this->headerLine('Content-Type', 'multipart/alternative;');
+				$result .= $this->textLine("\tboundary=\"" . $this->boundary[1] . '"');
+				break;
+			default:
+				// Catches case 'plain': and case '':
+				$result .= $this->textLine('Content-Type: ' . $this->ContentType . '; charset=' . $this->CharSet);
+				$ismultipart = false;
+				break;
+		}
+		// RFC1341 part 5 says 7bit is assumed if not specified
+		if ('7bit' != $this->Encoding) {
+			// RFC 2045 section 6.4 says multipart MIME parts may only use 7bit, 8bit or binary CTE
+			if ($ismultipart) {
+				if ('8bit' == $this->Encoding) {
+					$result .= $this->headerLine('Content-Transfer-Encoding', '8bit');
+				}
+				// The only remaining alternatives are quoted-printable and base64, which are both 7bit compatible
+			} else {
+				$result .= $this->headerLine('Content-Transfer-Encoding', $this->Encoding);
+			}
+		}
+
+		if ('mail' != $this->Mailer) {
+			$result .= static::$LE;
+		}
+
+		return $result;
+	}
+
+	/**
+	 * Returns the whole MIME message.
+	 * Includes complete headers and body.
+	 * Only valid post preSend().
+	 *
+	 * @see PHPMailer::preSend()
+	 *
+	 * @return string
+	 */
+	public function getSentMIMEMessage()
+	{
+		return rtrim($this->MIMEHeader . $this->mailHeader, "\n\r") . static::$LE . static::$LE . $this->MIMEBody;
+	}
+
+	/**
+	 * Create a unique ID to use for boundaries.
+	 *
+	 * @return string
+	 */
+	protected function generateId()
+	{
+		$len = 32; //32 bytes = 256 bits
+		if (function_exists('random_bytes')) {
+			$bytes = random_bytes($len);
+		} elseif (function_exists('openssl_random_pseudo_bytes')) {
+			$bytes = openssl_random_pseudo_bytes($len);
+		} else {
+			//Use a hash to force the length to the same as the other methods
+			$bytes = hash('sha256', uniqid((string) mt_rand(), true), true);
+		}
+
+		//We don't care about messing up base64 format here, just want a random string
+		return str_replace(['=', '+', '/'], '', base64_encode(hash('sha256', $bytes, true)));
+	}
+
+	/**
+	 * Assemble the message body.
+	 * Returns an empty string on failure.
+	 *
+	 * @throws Exception
+	 *
+	 * @return string The assembled message body
+	 */
+	public function createBody()
+	{
+		$body = '';
+		//Create unique IDs and preset boundaries
+		$this->uniqueid = $this->generateId();
+		$this->boundary[1] = 'b1_' . $this->uniqueid;
+		$this->boundary[2] = 'b2_' . $this->uniqueid;
+		$this->boundary[3] = 'b3_' . $this->uniqueid;
+
+		if ($this->sign_key_file) {
+			$body .= $this->getMailMIME() . static::$LE;
+		}
+
+		$this->setWordWrap();
+
+		$bodyEncoding = $this->Encoding;
+		$bodyCharSet = $this->CharSet;
+		//Can we do a 7-bit downgrade?
+		if ('8bit' == $bodyEncoding and !$this->has8bitChars($this->Body)) {
+			$bodyEncoding = '7bit';
+			//All ISO 8859, Windows codepage and UTF-8 charsets are ascii compatible up to 7-bit
+			$bodyCharSet = 'us-ascii';
+		}
+		//If lines are too long, and we're not already using an encoding that will shorten them,
+		//change to quoted-printable transfer encoding for the body part only
+		if ('base64' != $this->Encoding and static::hasLineLongerThanMax($this->Body)) {
+			$bodyEncoding = 'quoted-printable';
+		}
+
+		$altBodyEncoding = $this->Encoding;
+		$altBodyCharSet = $this->CharSet;
+		//Can we do a 7-bit downgrade?
+		if ('8bit' == $altBodyEncoding and !$this->has8bitChars($this->AltBody)) {
+			$altBodyEncoding = '7bit';
+			//All ISO 8859, Windows codepage and UTF-8 charsets are ascii compatible up to 7-bit
+			$altBodyCharSet = 'us-ascii';
+		}
+		//If lines are too long, and we're not already using an encoding that will shorten them,
+		//change to quoted-printable transfer encoding for the alt body part only
+		if ('base64' != $altBodyEncoding and static::hasLineLongerThanMax($this->AltBody)) {
+			$altBodyEncoding = 'quoted-printable';
+		}
+		//Use this as a preamble in all multipart message types
+		$mimepre = 'This is a multi-part message in MIME format.' . static::$LE;
+		switch ($this->message_type) {
+			case 'inline':
+				$body .= $mimepre;
+				$body .= $this->getBoundary($this->boundary[1], $bodyCharSet, '', $bodyEncoding);
+				$body .= $this->encodeString($this->Body, $bodyEncoding);
+				$body .= static::$LE;
+				$body .= $this->attachAll('inline', $this->boundary[1]);
+				break;
+			case 'attach':
+				$body .= $mimepre;
+				$body .= $this->getBoundary($this->boundary[1], $bodyCharSet, '', $bodyEncoding);
+				$body .= $this->encodeString($this->Body, $bodyEncoding);
+				$body .= static::$LE;
+				$body .= $this->attachAll('attachment', $this->boundary[1]);
+				break;
+			case 'inline_attach':
+				$body .= $mimepre;
+				$body .= $this->textLine('--' . $this->boundary[1]);
+				$body .= $this->headerLine('Content-Type', 'multipart/related;');
+				$body .= $this->textLine("\tboundary=\"" . $this->boundary[2] . '"');
+				$body .= static::$LE;
+				$body .= $this->getBoundary($this->boundary[2], $bodyCharSet, '', $bodyEncoding);
+				$body .= $this->encodeString($this->Body, $bodyEncoding);
+				$body .= static::$LE;
+				$body .= $this->attachAll('inline', $this->boundary[2]);
+				$body .= static::$LE;
+				$body .= $this->attachAll('attachment', $this->boundary[1]);
+				break;
+			case 'alt':
+				$body .= $mimepre;
+				$body .= $this->getBoundary($this->boundary[1], $altBodyCharSet, 'text/plain', $altBodyEncoding);
+				$body .= $this->encodeString($this->AltBody, $altBodyEncoding);
+				$body .= static::$LE;
+				$body .= $this->getBoundary($this->boundary[1], $bodyCharSet, 'text/html', $bodyEncoding);
+				$body .= $this->encodeString($this->Body, $bodyEncoding);
+				$body .= static::$LE;
+				if (!empty($this->Ical)) {
+					$body .= $this->getBoundary($this->boundary[1], '', 'text/calendar; method=REQUEST', '');
+					$body .= $this->encodeString($this->Ical, $this->Encoding);
+					$body .= static::$LE;
+				}
+				$body .= $this->endBoundary($this->boundary[1]);
+				break;
+			case 'alt_inline':
+				$body .= $mimepre;
+				$body .= $this->getBoundary($this->boundary[1], $altBodyCharSet, 'text/plain', $altBodyEncoding);
+				$body .= $this->encodeString($this->AltBody, $altBodyEncoding);
+				$body .= static::$LE;
+				$body .= $this->textLine('--' . $this->boundary[1]);
+				$body .= $this->headerLine('Content-Type', 'multipart/related;');
+				$body .= $this->textLine("\tboundary=\"" . $this->boundary[2] . '"');
+				$body .= static::$LE;
+				$body .= $this->getBoundary($this->boundary[2], $bodyCharSet, 'text/html', $bodyEncoding);
+				$body .= $this->encodeString($this->Body, $bodyEncoding);
+				$body .= static::$LE;
+				$body .= $this->attachAll('inline', $this->boundary[2]);
+				$body .= static::$LE;
+				$body .= $this->endBoundary($this->boundary[1]);
+				break;
+			case 'alt_attach':
+				$body .= $mimepre;
+				$body .= $this->textLine('--' . $this->boundary[1]);
+				$body .= $this->headerLine('Content-Type', 'multipart/alternative;');
+				$body .= $this->textLine("\tboundary=\"" . $this->boundary[2] . '"');
+				$body .= static::$LE;
+				$body .= $this->getBoundary($this->boundary[2], $altBodyCharSet, 'text/plain', $altBodyEncoding);
+				$body .= $this->encodeString($this->AltBody, $altBodyEncoding);
+				$body .= static::$LE;
+				$body .= $this->getBoundary($this->boundary[2], $bodyCharSet, 'text/html', $bodyEncoding);
+				$body .= $this->encodeString($this->Body, $bodyEncoding);
+				$body .= static::$LE;
+				if (!empty($this->Ical)) {
+					$body .= $this->getBoundary($this->boundary[2], '', 'text/calendar; method=REQUEST', '');
+					$body .= $this->encodeString($this->Ical, $this->Encoding);
+				}
+				$body .= $this->endBoundary($this->boundary[2]);
+				$body .= static::$LE;
+				$body .= $this->attachAll('attachment', $this->boundary[1]);
+				break;
+			case 'alt_inline_attach':
+				$body .= $mimepre;
+				$body .= $this->textLine('--' . $this->boundary[1]);
+				$body .= $this->headerLine('Content-Type', 'multipart/alternative;');
+				$body .= $this->textLine("\tboundary=\"" . $this->boundary[2] . '"');
+				$body .= static::$LE;
+				$body .= $this->getBoundary($this->boundary[2], $altBodyCharSet, 'text/plain', $altBodyEncoding);
+				$body .= $this->encodeString($this->AltBody, $altBodyEncoding);
+				$body .= static::$LE;
+				$body .= $this->textLine('--' . $this->boundary[2]);
+				$body .= $this->headerLine('Content-Type', 'multipart/related;');
+				$body .= $this->textLine("\tboundary=\"" . $this->boundary[3] . '"');
+				$body .= static::$LE;
+				$body .= $this->getBoundary($this->boundary[3], $bodyCharSet, 'text/html', $bodyEncoding);
+				$body .= $this->encodeString($this->Body, $bodyEncoding);
+				$body .= static::$LE;
+				$body .= $this->attachAll('inline', $this->boundary[3]);
+				$body .= static::$LE;
+				$body .= $this->endBoundary($this->boundary[2]);
+				$body .= static::$LE;
+				$body .= $this->attachAll('attachment', $this->boundary[1]);
+				break;
+			default:
+				// Catch case 'plain' and case '', applies to simple `text/plain` and `text/html` body content types
+				//Reset the `Encoding` property in case we changed it for line length reasons
+				$this->Encoding = $bodyEncoding;
+				$body .= $this->encodeString($this->Body, $this->Encoding);
+				break;
+		}
+
+		if ($this->isError()) {
+			$body = '';
+			if ($this->exceptions) {
+				throw new Exception($this->lang('empty_message'), self::STOP_CRITICAL);
+			}
+		} elseif ($this->sign_key_file) {
+			try {
+				if (!defined('PKCS7_TEXT')) {
+					throw new Exception($this->lang('extension_missing') . 'openssl');
+				}
+				// @TODO would be nice to use php://temp streams here
+				$file = tempnam(sys_get_temp_dir(), 'mail');
+				if (false === file_put_contents($file, $body)) {
+					throw new Exception($this->lang('signing') . ' Could not write temp file');
+				}
+				$signed = tempnam(sys_get_temp_dir(), 'signed');
+				//Workaround for PHP bug https://bugs.php.net/bug.php?id=69197
+				if (empty($this->sign_extracerts_file)) {
+					$sign = @openssl_pkcs7_sign(
+						$file,
+						$signed,
+						'file://' . realpath($this->sign_cert_file),
+						['file://' . realpath($this->sign_key_file), $this->sign_key_pass],
+						[]
+					);
+				} else {
+					$sign = @openssl_pkcs7_sign(
+						$file,
+						$signed,
+						'file://' . realpath($this->sign_cert_file),
+						['file://' . realpath($this->sign_key_file), $this->sign_key_pass],
+						[],
+						PKCS7_DETACHED,
+						$this->sign_extracerts_file
+					);
+				}
+				@unlink($file);
+				if ($sign) {
+					$body = file_get_contents($signed);
+					@unlink($signed);
+					//The message returned by openssl contains both headers and body, so need to split them up
+					$parts = explode("\n\n", $body, 2);
+					$this->MIMEHeader .= $parts[0] . static::$LE . static::$LE;
+					$body = $parts[1];
+				} else {
+					@unlink($signed);
+					throw new Exception($this->lang('signing') . openssl_error_string());
+				}
+			} catch (Exception $exc) {
+				$body = '';
+				if ($this->exceptions) {
+					throw $exc;
+				}
+			}
+		}
+
+		return $body;
+	}
+
+	/**
+	 * Return the start of a message boundary.
+	 *
+	 * @param string $boundary
+	 * @param string $charSet
+	 * @param string $contentType
+	 * @param string $encoding
+	 *
+	 * @return string
+	 */
+	protected function getBoundary($boundary, $charSet, $contentType, $encoding)
+	{
+		$result = '';
+		if ('' == $charSet) {
+			$charSet = $this->CharSet;
+		}
+		if ('' == $contentType) {
+			$contentType = $this->ContentType;
+		}
+		if ('' == $encoding) {
+			$encoding = $this->Encoding;
+		}
+		$result .= $this->textLine('--' . $boundary);
+		$result .= sprintf('Content-Type: %s; charset=%s', $contentType, $charSet);
+		$result .= static::$LE;
+		// RFC1341 part 5 says 7bit is assumed if not specified
+		if ('7bit' != $encoding) {
+			$result .= $this->headerLine('Content-Transfer-Encoding', $encoding);
+		}
+		$result .= static::$LE;
+
+		return $result;
+	}
+
+	/**
+	 * Return the end of a message boundary.
+	 *
+	 * @param string $boundary
+	 *
+	 * @return string
+	 */
+	protected function endBoundary($boundary)
+	{
+		return static::$LE . '--' . $boundary . '--' . static::$LE;
+	}
+
+	/**
+	 * Set the message type.
+	 * PHPMailer only supports some preset message types, not arbitrary MIME structures.
+	 */
+	protected function setMessageType()
+	{
+		$type = [];
+		if ($this->alternativeExists()) {
+			$type[] = 'alt';
+		}
+		if ($this->inlineImageExists()) {
+			$type[] = 'inline';
+		}
+		if ($this->attachmentExists()) {
+			$type[] = 'attach';
+		}
+		$this->message_type = implode('_', $type);
+		if ('' == $this->message_type) {
+			//The 'plain' message_type refers to the message having a single body element, not that it is plain-text
+			$this->message_type = 'plain';
+		}
+	}
+
+	/**
+	 * Format a header line.
+	 *
+	 * @param string     $name
+	 * @param string|int $value
+	 *
+	 * @return string
+	 */
+	public function headerLine($name, $value)
+	{
+		return $name . ': ' . $value . static::$LE;
+	}
+
+	/**
+	 * Return a formatted mail line.
+	 *
+	 * @param string $value
+	 *
+	 * @return string
+	 */
+	public function textLine($value)
+	{
+		return $value . static::$LE;
+	}
+
+	/**
+	 * Add an attachment from a path on the filesystem.
+	 * Never use a user-supplied path to a file!
+	 * Returns false if the file could not be found or read.
+	 *
+	 * @param string $path        Path to the attachment
+	 * @param string $name        Overrides the attachment name
+	 * @param string $encoding    File encoding (see $Encoding)
+	 * @param string $type        File extension (MIME) type
+	 * @param string $disposition Disposition to use
+	 *
+	 * @throws Exception
+	 *
+	 * @return bool
+	 */
+	public function addAttachment($path, $name = '', $encoding = 'base64', $type = '', $disposition = 'attachment')
+	{
+		try {
+			if (!@is_file($path)) {
+				throw new Exception($this->lang('file_access') . $path, self::STOP_CONTINUE);
+			}
+
+			// If a MIME type is not specified, try to work it out from the file name
+			if ('' == $type) {
+				$type = static::filenameToType($path);
+			}
+
+			$filename = basename($path);
+			if ('' == $name) {
+				$name = $filename;
+			}
+
+			$this->attachment[] = [
+				0 => $path,
+				1 => $filename,
+				2 => $name,
+				3 => $encoding,
+				4 => $type,
+				5 => false, // isStringAttachment
+				6 => $disposition,
+				7 => $name,
+			];
+		} catch (Exception $exc) {
+			$this->setError($exc->getMessage());
+			$this->edebug($exc->getMessage());
+			if ($this->exceptions) {
+				throw $exc;
+			}
+
+			return false;
+		}
+
+		return true;
+	}
+
+	/**
+	 * Return the array of attachments.
+	 *
+	 * @return array
+	 */
+	public function getAttachments()
+	{
+		return $this->attachment;
+	}
+
+	/**
+	 * Attach all file, string, and binary attachments to the message.
+	 * Returns an empty string on failure.
+	 *
+	 * @param string $disposition_type
+	 * @param string $boundary
+	 *
+	 * @return string
+	 */
+	protected function attachAll($disposition_type, $boundary)
+	{
+		// Return text of body
+		$mime = [];
+		$cidUniq = [];
+		$incl = [];
+
+		// Add all attachments
+		foreach ($this->attachment as $attachment) {
+			// Check if it is a valid disposition_filter
+			if ($attachment[6] == $disposition_type) {
+				// Check for string attachment
+				$string = '';
+				$path = '';
+				$bString = $attachment[5];
+				if ($bString) {
+					$string = $attachment[0];
+				} else {
+					$path = $attachment[0];
+				}
+
+				$inclhash = hash('sha256', serialize($attachment));
+				if (in_array($inclhash, $incl)) {
+					continue;
+				}
+				$incl[] = $inclhash;
+				$name = $attachment[2];
+				$encoding = $attachment[3];
+				$type = $attachment[4];
+				$disposition = $attachment[6];
+				$cid = $attachment[7];
+				if ('inline' == $disposition and array_key_exists($cid, $cidUniq)) {
+					continue;
+				}
+				$cidUniq[$cid] = true;
+
+				$mime[] = sprintf('--%s%s', $boundary, static::$LE);
+				//Only include a filename property if we have one
+				if (!empty($name)) {
+					$mime[] = sprintf(
+						'Content-Type: %s; name="%s"%s',
+						$type,
+						$this->encodeHeader($this->secureHeader($name)),
+						static::$LE
+					);
+				} else {
+					$mime[] = sprintf(
+						'Content-Type: %s%s',
+						$type,
+						static::$LE
+					);
+				}
+				// RFC1341 part 5 says 7bit is assumed if not specified
+				if ('7bit' != $encoding) {
+					$mime[] = sprintf('Content-Transfer-Encoding: %s%s', $encoding, static::$LE);
+				}
+
+				if (!empty($cid)) {
+					$mime[] = sprintf('Content-ID: <%s>%s', $cid, static::$LE);
+				}
+
+				// If a filename contains any of these chars, it should be quoted,
+				// but not otherwise: RFC2183 & RFC2045 5.1
+				// Fixes a warning in IETF's msglint MIME checker
+				// Allow for bypassing the Content-Disposition header totally
+				if (!(empty($disposition))) {
+					$encoded_name = $this->encodeHeader($this->secureHeader($name));
+					if (preg_match('/[ \(\)<>@,;:\\"\/\[\]\?=]/', $encoded_name)) {
+						$mime[] = sprintf(
+							'Content-Disposition: %s; filename="%s"%s',
+							$disposition,
+							$encoded_name,
+							static::$LE . static::$LE
+						);
+					} else {
+						if (!empty($encoded_name)) {
+							$mime[] = sprintf(
+								'Content-Disposition: %s; filename=%s%s',
+								$disposition,
+								$encoded_name,
+								static::$LE . static::$LE
+							);
+						} else {
+							$mime[] = sprintf(
+								'Content-Disposition: %s%s',
+								$disposition,
+								static::$LE . static::$LE
+							);
+						}
+					}
+				} else {
+					$mime[] = static::$LE;
+				}
+
+				// Encode as string attachment
+				if ($bString) {
+					$mime[] = $this->encodeString($string, $encoding);
+				} else {
+					$mime[] = $this->encodeFile($path, $encoding);
+				}
+				if ($this->isError()) {
+					return '';
+				}
+				$mime[] = static::$LE;
+			}
+		}
+
+		$mime[] = sprintf('--%s--%s', $boundary, static::$LE);
+
+		return implode('', $mime);
+	}
+
+	/**
+	 * Encode a file attachment in requested format.
+	 * Returns an empty string on failure.
+	 *
+	 * @param string $path     The full path to the file
+	 * @param string $encoding The encoding to use; one of 'base64', '7bit', '8bit', 'binary', 'quoted-printable'
+	 *
+	 * @throws Exception
+	 *
+	 * @return string
+	 */
+	protected function encodeFile($path, $encoding = 'base64')
+	{
+		try {
+			if (!file_exists($path)) {
+				throw new Exception($this->lang('file_open') . $path, self::STOP_CONTINUE);
+			}
+			$file_buffer = file_get_contents($path);
+			if (false === $file_buffer) {
+				throw new Exception($this->lang('file_open') . $path, self::STOP_CONTINUE);
+			}
+			$file_buffer = $this->encodeString($file_buffer, $encoding);
+
+			return $file_buffer;
+		} catch (Exception $exc) {
+			$this->setError($exc->getMessage());
+
+			return '';
+		}
+	}
+
+	/**
+	 * Encode a string in requested format.
+	 * Returns an empty string on failure.
+	 *
+	 * @param string $str      The text to encode
+	 * @param string $encoding The encoding to use; one of 'base64', '7bit', '8bit', 'binary', 'quoted-printable
+	 *
+	 * @return string
+	 */
+	public function encodeString($str, $encoding = 'base64')
+	{
+		$encoded = '';
+		switch (strtolower($encoding)) {
+			case 'base64':
+				$encoded = chunk_split(
+					base64_encode($str),
+					static::STD_LINE_LENGTH - strlen(static::$LE),
+					static::$LE
+				);
+				break;
+			case '7bit':
+			case '8bit':
+				$encoded = static::normalizeBreaks($str);
+				// Make sure it ends with a line break
+				if (substr($encoded, -(strlen(static::$LE))) != static::$LE) {
+					$encoded .= static::$LE;
+				}
+				break;
+			case 'binary':
+				$encoded = $str;
+				break;
+			case 'quoted-printable':
+				$encoded = $this->encodeQP($str);
+				break;
+			default:
+				$this->setError($this->lang('encoding') . $encoding);
+				break;
+		}
+
+		return $encoded;
+	}
+
+	/**
+	 * Encode a header value (not including its label) optimally.
+	 * Picks shortest of Q, B, or none. Result includes folding if needed.
+	 * See RFC822 definitions for phrase, comment and text positions.
+	 *
+	 * @param string $str      The header value to encode
+	 * @param string $position What context the string will be used in
+	 *
+	 * @return string
+	 */
+	public function encodeHeader($str, $position = 'text')
+	{
+		$matchcount = 0;
+		switch (strtolower($position)) {
+			case 'phrase':
+				if (!preg_match('/[\200-\377]/', $str)) {
+					// Can't use addslashes as we don't know the value of magic_quotes_sybase
+					$encoded = addcslashes($str, "\0..\37\177\\\"");
+					if (($str == $encoded) and !preg_match('/[^A-Za-z0-9!#$%&\'*+\/=?^_`{|}~ -]/', $str)) {
+						return $encoded;
+					}
+
+					return "\"$encoded\"";
+				}
+				$matchcount = preg_match_all('/[^\040\041\043-\133\135-\176]/', $str, $matches);
+				break;
+			/* @noinspection PhpMissingBreakStatementInspection */
+			case 'comment':
+				$matchcount = preg_match_all('/[()"]/', $str, $matches);
+			//fallthrough
+			case 'text':
+			default:
+				$matchcount += preg_match_all('/[\000-\010\013\014\016-\037\177-\377]/', $str, $matches);
+				break;
+		}
+
+		//RFCs specify a maximum line length of 78 chars, however mail() will sometimes
+		//corrupt messages with headers longer than 65 chars. See #818
+		$lengthsub = 'mail' == $this->Mailer ? 13 : 0;
+		$maxlen = static::STD_LINE_LENGTH - $lengthsub;
+		// Try to select the encoding which should produce the shortest output
+		if ($matchcount > strlen($str) / 3) {
+			// More than a third of the content will need encoding, so B encoding will be most efficient
+			$encoding = 'B';
+			//This calculation is:
+			// max line length
+			// - shorten to avoid mail() corruption
+			// - Q/B encoding char overhead ("` =?<charset>?[QB]?<content>?=`")
+			// - charset name length
+			$maxlen = static::STD_LINE_LENGTH - $lengthsub - 8 - strlen($this->CharSet);
+			if ($this->hasMultiBytes($str)) {
+				// Use a custom function which correctly encodes and wraps long
+				// multibyte strings without breaking lines within a character
+				$encoded = $this->base64EncodeWrapMB($str, "\n");
+			} else {
+				$encoded = base64_encode($str);
+				$maxlen -= $maxlen % 4;
+				$encoded = trim(chunk_split($encoded, $maxlen, "\n"));
+			}
+			$encoded = preg_replace('/^(.*)$/m', ' =?' . $this->CharSet . "?$encoding?\\1?=", $encoded);
+		} elseif ($matchcount > 0) {
+			//1 or more chars need encoding, use Q-encode
+			$encoding = 'Q';
+			//Recalc max line length for Q encoding - see comments on B encode
+			$maxlen = static::STD_LINE_LENGTH - $lengthsub - 8 - strlen($this->CharSet);
+			$encoded = $this->encodeQ($str, $position);
+			$encoded = $this->wrapText($encoded, $maxlen, true);
+			$encoded = str_replace('=' . static::$LE, "\n", trim($encoded));
+			$encoded = preg_replace('/^(.*)$/m', ' =?' . $this->CharSet . "?$encoding?\\1?=", $encoded);
+		} elseif (strlen($str) > $maxlen) {
+			//No chars need encoding, but line is too long, so fold it
+			$encoded = trim($this->wrapText($str, $maxlen, false));
+			if ($str == $encoded) {
+				//Wrapping nicely didn't work, wrap hard instead
+				$encoded = trim(chunk_split($str, static::STD_LINE_LENGTH, static::$LE));
+			}
+			$encoded = str_replace(static::$LE, "\n", trim($encoded));
+			$encoded = preg_replace('/^(.*)$/m', ' \\1', $encoded);
+		} else {
+			//No reformatting needed
+			return $str;
+		}
+
+		return trim(static::normalizeBreaks($encoded));
+	}
+
+	/**
+	 * Check if a string contains multi-byte characters.
+	 *
+	 * @param string $str multi-byte text to wrap encode
+	 *
+	 * @return bool
+	 */
+	public function hasMultiBytes($str)
+	{
+		if (function_exists('mb_strlen')) {
+			return strlen($str) > mb_strlen($str, $this->CharSet);
+		}
+
+		// Assume no multibytes (we can't handle without mbstring functions anyway)
+		return false;
+	}
+
+	/**
+	 * Does a string contain any 8-bit chars (in any charset)?
+	 *
+	 * @param string $text
+	 *
+	 * @return bool
+	 */
+	public function has8bitChars($text)
+	{
+		return (bool) preg_match('/[\x80-\xFF]/', $text);
+	}
+
+	/**
+	 * Encode and wrap long multibyte strings for mail headers
+	 * without breaking lines within a character.
+	 * Adapted from a function by paravoid.
+	 *
+	 * @see http://www.php.net/manual/en/function.mb-encode-mimeheader.php#60283
+	 *
+	 * @param string $str       multi-byte text to wrap encode
+	 * @param string $linebreak string to use as linefeed/end-of-line
+	 *
+	 * @return string
+	 */
+	public function base64EncodeWrapMB($str, $linebreak = null)
+	{
+		$start = '=?' . $this->CharSet . '?B?';
+		$end = '?=';
+		$encoded = '';
+		if (null === $linebreak) {
+			$linebreak = static::$LE;
+		}
+
+		$mb_length = mb_strlen($str, $this->CharSet);
+		// Each line must have length <= 75, including $start and $end
+		$length = 75 - strlen($start) - strlen($end);
+		// Average multi-byte ratio
+		$ratio = $mb_length / strlen($str);
+		// Base64 has a 4:3 ratio
+		$avgLength = floor($length * $ratio * .75);
+
+		for ($i = 0; $i < $mb_length; $i += $offset) {
+			$lookBack = 0;
+			do {
+				$offset = $avgLength - $lookBack;
+				$chunk = mb_substr($str, $i, $offset, $this->CharSet);
+				$chunk = base64_encode($chunk);
+				++$lookBack;
+			} while (strlen($chunk) > $length);
+			$encoded .= $chunk . $linebreak;
+		}
+
+		// Chomp the last linefeed
+		return substr($encoded, 0, -strlen($linebreak));
+	}
+
+	/**
+	 * Encode a string in quoted-printable format.
+	 * According to RFC2045 section 6.7.
+	 *
+	 * @param string $string The text to encode
+	 *
+	 * @return string
+	 */
+	public function encodeQP($string)
+	{
+		return static::normalizeBreaks(quoted_printable_encode($string));
+	}
+
+	/**
+	 * Encode a string using Q encoding.
+	 *
+	 * @see http://tools.ietf.org/html/rfc2047#section-4.2
+	 *
+	 * @param string $str      the text to encode
+	 * @param string $position Where the text is going to be used, see the RFC for what that means
+	 *
+	 * @return string
+	 */
+	public function encodeQ($str, $position = 'text')
+	{
+		// There should not be any EOL in the string
+		$pattern = '';
+		$encoded = str_replace(["\r", "\n"], '', $str);
+		switch (strtolower($position)) {
+			case 'phrase':
+				// RFC 2047 section 5.3
+				$pattern = '^A-Za-z0-9!*+\/ -';
+				break;
+			/*
              * RFC 2047 section 5.2.
              * Build $pattern without including delimiters and []
              */
-            /* @noinspection PhpMissingBreakStatementInspection */
-            case 'comment':
-                $pattern = '\(\)"';
-            /* Intentional fall through */
-            case 'text':
-            default:
-                // RFC 2047 section 5.1
-                // Replace every high ascii, control, =, ? and _ characters
-                $pattern = '\000-\011\013\014\016-\037\075\077\137\177-\377' . $pattern;
-                break;
-        }
-        $matches = [];
-        if (preg_match_all("/[{$pattern}]/", $encoded, $matches)) {
-            // If the string contains an '=', make sure it's the first thing we replace
-            // so as to avoid double-encoding
-            $eqkey = array_search('=', $matches[0]);
-            if (false !== $eqkey) {
-                unset($matches[0][$eqkey]);
-                array_unshift($matches[0], '=');
-            }
-            foreach (array_unique($matches[0]) as $char) {
-                $encoded = str_replace($char, '=' . sprintf('%02X', ord($char)), $encoded);
-            }
-        }
-        // Replace spaces with _ (more readable than =20)
-        // RFC 2047 section 4.2(2)
-        return str_replace(' ', '_', $encoded);
-    }
-
-    /**
-     * Add a string or binary attachment (non-filesystem).
-     * This method can be used to attach ascii or binary data,
-     * such as a BLOB record from a database.
-     *
-     * @param string $string      String attachment data
-     * @param string $filename    Name of the attachment
-     * @param string $encoding    File encoding (see $Encoding)
-     * @param string $type        File extension (MIME) type
-     * @param string $disposition Disposition to use
-     */
-    public function addStringAttachment(
-        $string,
-        $filename,
-        $encoding = 'base64',
-        $type = '',
-        $disposition = 'attachment'
-    ) {
-        // If a MIME type is not specified, try to work it out from the file name
-        if ('' == $type) {
-            $type = static::filenameToType($filename);
-        }
-        // Append to $attachment array
-        $this->attachment[] = [
-            0 => $string,
-            1 => $filename,
-            2 => basename($filename),
-            3 => $encoding,
-            4 => $type,
-            5 => true, // isStringAttachment
-            6 => $disposition,
-            7 => 0,
-        ];
-    }
-
-    /**
-     * Add an embedded (inline) attachment from a file.
-     * This can include images, sounds, and just about any other document type.
-     * These differ from 'regular' attachments in that they are intended to be
-     * displayed inline with the message, not just attached for download.
-     * This is used in HTML messages that embed the images
-     * the HTML refers to using the $cid value.
-     * Never use a user-supplied path to a file!
-     *
-     * @param string $path        Path to the attachment
-     * @param string $cid         Content ID of the attachment; Use this to reference
-     *                            the content when using an embedded image in HTML
-     * @param string $name        Overrides the attachment name
-     * @param string $encoding    File encoding (see $Encoding)
-     * @param string $type        File MIME type
-     * @param string $disposition Disposition to use
-     *
-     * @return bool True on successfully adding an attachment
-     */
-    public function addEmbeddedImage($path, $cid, $name = '', $encoding = 'base64', $type = '', $disposition = 'inline')
-    {
-        if (!@is_file($path)) {
-            $this->setError($this->lang('file_access') . $path);
-
-            return false;
-        }
-
-        // If a MIME type is not specified, try to work it out from the file name
-        if ('' == $type) {
-            $type = static::filenameToType($path);
-        }
-
-        $filename = basename($path);
-        if ('' == $name) {
-            $name = $filename;
-        }
-
-        // Append to $attachment array
-        $this->attachment[] = [
-            0 => $path,
-            1 => $filename,
-            2 => $name,
-            3 => $encoding,
-            4 => $type,
-            5 => false, // isStringAttachment
-            6 => $disposition,
-            7 => $cid,
-        ];
-
-        return true;
-    }
-
-    /**
-     * Add an embedded stringified attachment.
-     * This can include images, sounds, and just about any other document type.
-     * Be sure to set the $type to an image type for images:
-     * JPEG images use 'image/jpeg', GIF uses 'image/gif', PNG uses 'image/png'.
-     *
-     * @param string $string      The attachment binary data
-     * @param string $cid         Content ID of the attachment; Use this to reference
-     *                            the content when using an embedded image in HTML
-     * @param string $name
-     * @param string $encoding    File encoding (see $Encoding)
-     * @param string $type        MIME type
-     * @param string $disposition Disposition to use
-     *
-     * @return bool True on successfully adding an attachment
-     */
-    public function addStringEmbeddedImage(
-        $string,
-        $cid,
-        $name = '',
-        $encoding = 'base64',
-        $type = '',
-        $disposition = 'inline'
-    ) {
-        // If a MIME type is not specified, try to work it out from the name
-        if ('' == $type and !empty($name)) {
-            $type = static::filenameToType($name);
-        }
-
-        // Append to $attachment array
-        $this->attachment[] = [
-            0 => $string,
-            1 => $name,
-            2 => $name,
-            3 => $encoding,
-            4 => $type,
-            5 => true, // isStringAttachment
-            6 => $disposition,
-            7 => $cid,
-        ];
-
-        return true;
-    }
-
-    /**
-     * Check if an embedded attachment is present with this cid.
-     *
-     * @param string $cid
-     *
-     * @return bool
-     */
-    protected function cidExists($cid)
-    {
-        foreach ($this->attachment as $attachment) {
-            if ('inline' == $attachment[6] and $cid == $attachment[7]) {
-                return true;
-            }
-        }
-
-        return false;
-    }
-
-    /**
-     * Check if an inline attachment is present.
-     *
-     * @return bool
-     */
-    public function inlineImageExists()
-    {
-        foreach ($this->attachment as $attachment) {
-            if ($attachment[6] == 'inline') {
-                return true;
-            }
-        }
-
-        return false;
-    }
-
-    /**
-     * Check if an attachment (non-inline) is present.
-     *
-     * @return bool
-     */
-    public function attachmentExists()
-    {
-        foreach ($this->attachment as $attachment) {
-            if ($attachment[6] == 'attachment') {
-                return true;
-            }
-        }
-
-        return false;
-    }
-
-    /**
-     * Check if this message has an alternative body set.
-     *
-     * @return bool
-     */
-    public function alternativeExists()
-    {
-        return !empty($this->AltBody);
-    }
-
-    /**
-     * Clear queued addresses of given kind.
-     *
-     * @param string $kind 'to', 'cc', or 'bcc'
-     */
-    public function clearQueuedAddresses($kind)
-    {
-        $this->RecipientsQueue = array_filter(
-            $this->RecipientsQueue,
-            function ($params) use ($kind) {
-                return $params[0] != $kind;
-            }
-        );
-    }
-
-    /**
-     * Clear all To recipients.
-     */
-    public function clearAddresses()
-    {
-        foreach ($this->to as $to) {
-            unset($this->all_recipients[strtolower($to[0])]);
-        }
-        $this->to = [];
-        $this->clearQueuedAddresses('to');
-    }
-
-    /**
-     * Clear all CC recipients.
-     */
-    public function clearCCs()
-    {
-        foreach ($this->cc as $cc) {
-            unset($this->all_recipients[strtolower($cc[0])]);
-        }
-        $this->cc = [];
-        $this->clearQueuedAddresses('cc');
-    }
-
-    /**
-     * Clear all BCC recipients.
-     */
-    public function clearBCCs()
-    {
-        foreach ($this->bcc as $bcc) {
-            unset($this->all_recipients[strtolower($bcc[0])]);
-        }
-        $this->bcc = [];
-        $this->clearQueuedAddresses('bcc');
-    }
-
-    /**
-     * Clear all ReplyTo recipients.
-     */
-    public function clearReplyTos()
-    {
-        $this->ReplyTo = [];
-        $this->ReplyToQueue = [];
-    }
-
-    /**
-     * Clear all recipient types.
-     */
-    public function clearAllRecipients()
-    {
-        $this->to = [];
-        $this->cc = [];
-        $this->bcc = [];
-        $this->all_recipients = [];
-        $this->RecipientsQueue = [];
-    }
-
-    /**
-     * Clear all filesystem, string, and binary attachments.
-     */
-    public function clearAttachments()
-    {
-        $this->attachment = [];
-    }
-
-    /**
-     * Clear all custom headers.
-     */
-    public function clearCustomHeaders()
-    {
-        $this->CustomHeader = [];
-    }
-
-    /**
-     * Add an error message to the error container.
-     *
-     * @param string $msg
-     */
-    protected function setError($msg)
-    {
-        ++$this->error_count;
-        if ('smtp' == $this->Mailer and null !== $this->smtp) {
-            $lasterror = $this->smtp->getError();
-            if (!empty($lasterror['error'])) {
-                $msg .= $this->lang('smtp_error') . $lasterror['error'];
-                if (!empty($lasterror['detail'])) {
-                    $msg .= ' Detail: ' . $lasterror['detail'];
-                }
-                if (!empty($lasterror['smtp_code'])) {
-                    $msg .= ' SMTP code: ' . $lasterror['smtp_code'];
-                }
-                if (!empty($lasterror['smtp_code_ex'])) {
-                    $msg .= ' Additional SMTP info: ' . $lasterror['smtp_code_ex'];
-                }
-            }
-        }
-        $this->ErrorInfo = $msg;
-    }
-
-    /**
-     * Return an RFC 822 formatted date.
-     *
-     * @return string
-     */
-    public static function rfcDate()
-    {
-        // Set the time zone to whatever the default is to avoid 500 errors
-        // Will default to UTC if it's not set properly in php.ini
-        date_default_timezone_set(@date_default_timezone_get());
-
-        return date('D, j M Y H:i:s O');
-    }
-
-    /**
-     * Get the server hostname.
-     * Returns 'localhost.localdomain' if unknown.
-     *
-     * @return string
-     */
-    protected function serverHostname()
-    {
-        $result = '';
-        if (!empty($this->Hostname)) {
-            $result = $this->Hostname;
-        } elseif (isset($_SERVER) and array_key_exists('SERVER_NAME', $_SERVER)) {
-            $result = $_SERVER['SERVER_NAME'];
-        } elseif (function_exists('gethostname') and gethostname() !== false) {
-            $result = gethostname();
-        } elseif (php_uname('n') !== false) {
-            $result = php_uname('n');
-        }
-        if (!static::isValidHost($result)) {
-            return 'localhost.localdomain';
-        }
-
-        return $result;
-    }
-
-    /**
-     * Validate whether a string contains a valid value to use as a hostname or IP address.
-     * IPv6 addresses must include [], e.g. `[::1]`, not just `::1`.
-     *
-     * @param string $host The host name or IP address to check
-     *
-     * @return bool
-     */
-    public static function isValidHost($host)
-    {
-        //Simple syntax limits
-        if (empty($host)
-            or !is_string($host)
-            or strlen($host) > 256
-        ) {
-            return false;
-        }
-        //Looks like a bracketed IPv6 address
-        if (trim($host, '[]') != $host) {
-            return (bool) filter_var(trim($host, '[]'), FILTER_VALIDATE_IP, FILTER_FLAG_IPV6);
-        }
-        //If removing all the dots results in a numeric string, it must be an IPv4 address.
-        //Need to check this first because otherwise things like `999.0.0.0` are considered valid host names
-        if (is_numeric(str_replace('.', '', $host))) {
-            //Is it a valid IPv4 address?
-            return (bool) filter_var($host, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4);
-        }
-        if (filter_var('http://' . $host, FILTER_VALIDATE_URL, FILTER_FLAG_HOST_REQUIRED)) {
-            //Is it a syntactically valid hostname?
-            return true;
-        }
-
-        return false;
-    }
-
-    /**
-     * Get an error message in the current language.
-     *
-     * @param string $key
-     *
-     * @return string
-     */
-    protected function lang($key)
-    {
-        if (count($this->language) < 1) {
-            $this->setLanguage('en'); // set the default language
-        }
-
-        if (array_key_exists($key, $this->language)) {
-            if ('smtp_connect_failed' == $key) {
-                //Include a link to troubleshooting docs on SMTP connection failure
-                //this is by far the biggest cause of support questions
-                //but it's usually not PHPMailer's fault.
-                return $this->language[$key] . ' https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting';
-            }
-
-            return $this->language[$key];
-        }
-
-        //Return the key as a fallback
-        return $key;
-    }
-
-    /**
-     * Check if an error occurred.
-     *
-     * @return bool True if an error did occur
-     */
-    public function isError()
-    {
-        return $this->error_count > 0;
-    }
-
-    /**
-     * Add a custom header.
-     * $name value can be overloaded to contain
-     * both header name and value (name:value).
-     *
-     * @param string      $name  Custom header name
-     * @param string|null $value Header value
-     */
-    public function addCustomHeader($name, $value = null)
-    {
-        if (null === $value) {
-            // Value passed in as name:value
-            $this->CustomHeader[] = explode(':', $name, 2);
-        } else {
-            $this->CustomHeader[] = [$name, $value];
-        }
-    }
-
-    /**
-     * Returns all custom headers.
-     *
-     * @return array
-     */
-    public function getCustomHeaders()
-    {
-        return $this->CustomHeader;
-    }
-
-    /**
-     * Create a message body from an HTML string.
-     * Automatically inlines images and creates a plain-text version by converting the HTML,
-     * overwriting any existing values in Body and AltBody.
-     * Do not source $message content from user input!
-     * $basedir is prepended when handling relative URLs, e.g. <img src="/images/a.png"> and must not be empty
-     * will look for an image file in $basedir/images/a.png and convert it to inline.
-     * If you don't provide a $basedir, relative paths will be left untouched (and thus probably break in email)
-     * Converts data-uri images into embedded attachments.
-     * If you don't want to apply these transformations to your HTML, just set Body and AltBody directly.
-     *
-     * @param string        $message  HTML message string
-     * @param string        $basedir  Absolute path to a base directory to prepend to relative paths to images
-     * @param bool|callable $advanced Whether to use the internal HTML to text converter
-     *                                or your own custom converter @see PHPMailer::html2text()
-     *
-     * @return string $message The transformed message Body
-     */
-    public function msgHTML($message, $basedir = '', $advanced = false)
-    {
-        preg_match_all('/(src|background)=["\'](.*)["\']/Ui', $message, $images);
-        if (array_key_exists(2, $images)) {
-            if (strlen($basedir) > 1 && substr($basedir, -1) != '/') {
-                // Ensure $basedir has a trailing /
-                $basedir .= '/';
-            }
-            foreach ($images[2] as $imgindex => $url) {
-                // Convert data URIs into embedded images
-                //e.g. "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="
-                if (preg_match('#^data:(image/(?:jpe?g|gif|png));?(base64)?,(.+)#', $url, $match)) {
-                    if (count($match) == 4 and 'base64' == $match[2]) {
-                        $data = base64_decode($match[3]);
-                    } elseif ('' == $match[2]) {
-                        $data = rawurldecode($match[3]);
-                    } else {
-                        //Not recognised so leave it alone
-                        continue;
-                    }
-                    //Hash the decoded data, not the URL so that the same data-URI image used in multiple places
-                    //will only be embedded once, even if it used a different encoding
-                    $cid = hash('sha256', $data) . '@phpmailer.0'; // RFC2392 S 2
-
-                    if (!$this->cidExists($cid)) {
-                        $this->addStringEmbeddedImage($data, $cid, 'embed' . $imgindex, 'base64', $match[1]);
-                    }
-                    $message = str_replace(
-                        $images[0][$imgindex],
-                        $images[1][$imgindex] . '="cid:' . $cid . '"',
-                        $message
-                    );
-                    continue;
-                }
-                if (// Only process relative URLs if a basedir is provided (i.e. no absolute local paths)
-                    !empty($basedir)
-                    // Ignore URLs containing parent dir traversal (..)
-                    and (strpos($url, '..') === false)
-                    // Do not change urls that are already inline images
-                    and substr($url, 0, 4) !== 'cid:'
-                    // Do not change absolute URLs, including anonymous protocol
-                    and !preg_match('#^[a-z][a-z0-9+.-]*:?//#i', $url)
-                ) {
-                    $filename = basename($url);
-                    $directory = dirname($url);
-                    if ('.' == $directory) {
-                        $directory = '';
-                    }
-                    $cid = hash('sha256', $url) . '@phpmailer.0'; // RFC2392 S 2
-                    if (strlen($basedir) > 1 and substr($basedir, -1) != '/') {
-                        $basedir .= '/';
-                    }
-                    if (strlen($directory) > 1 and substr($directory, -1) != '/') {
-                        $directory .= '/';
-                    }
-                    if ($this->addEmbeddedImage(
-                        $basedir . $directory . $filename,
-                        $cid,
-                        $filename,
-                        'base64',
-                        static::_mime_types((string) static::mb_pathinfo($filename, PATHINFO_EXTENSION))
-                    )
-                    ) {
-                        $message = preg_replace(
-                            '/' . $images[1][$imgindex] . '=["\']' . preg_quote($url, '/') . '["\']/Ui',
-                            $images[1][$imgindex] . '="cid:' . $cid . '"',
-                            $message
-                        );
-                    }
-                }
-            }
-        }
-        $this->isHTML(true);
-        // Convert all message body line breaks to LE, makes quoted-printable encoding work much better
-        $this->Body = static::normalizeBreaks($message);
-        $this->AltBody = static::normalizeBreaks($this->html2text($message, $advanced));
-        if (!$this->alternativeExists()) {
-            $this->AltBody = 'This is an HTML-only message. To view it, activate HTML in your email application.'
-                . static::$LE;
-        }
-
-        return $this->Body;
-    }
-
-    /**
-     * Convert an HTML string into plain text.
-     * This is used by msgHTML().
-     * Note - older versions of this function used a bundled advanced converter
-     * which was removed for license reasons in #232.
-     * Example usage:
-     *
-     * ```php
-     * // Use default conversion
-     * $plain = $mail->html2text($html);
-     * // Use your own custom converter
-     * $plain = $mail->html2text($html, function($html) {
-     *     $converter = new MyHtml2text($html);
-     *     return $converter->get_text();
-     * });
-     * ```
-     *
-     * @param string        $html     The HTML text to convert
-     * @param bool|callable $advanced Any boolean value to use the internal converter,
-     *                                or provide your own callable for custom conversion
-     *
-     * @return string
-     */
-    public function html2text($html, $advanced = false)
-    {
-        if (is_callable($advanced)) {
-            return call_user_func($advanced, $html);
-        }
-
-        return html_entity_decode(
-            trim(strip_tags(preg_replace('/<(head|title|style|script)[^>]*>.*?<\/\\1>/si', '', $html))),
-            ENT_QUOTES,
-            $this->CharSet
-        );
-    }
-
-    /**
-     * Get the MIME type for a file extension.
-     *
-     * @param string $ext File extension
-     *
-     * @return string MIME type of file
-     */
-    public static function _mime_types($ext = '')
-    {
-        $mimes = [
-            'xl' => 'application/excel',
-            'js' => 'application/javascript',
-            'hqx' => 'application/mac-binhex40',
-            'cpt' => 'application/mac-compactpro',
-            'bin' => 'application/macbinary',
-            'doc' => 'application/msword',
-            'word' => 'application/msword',
-            'xlsx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
-            'xltx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.template',
-            'potx' => 'application/vnd.openxmlformats-officedocument.presentationml.template',
-            'ppsx' => 'application/vnd.openxmlformats-officedocument.presentationml.slideshow',
-            'pptx' => 'application/vnd.openxmlformats-officedocument.presentationml.presentation',
-            'sldx' => 'application/vnd.openxmlformats-officedocument.presentationml.slide',
-            'docx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
-            'dotx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.template',
-            'xlam' => 'application/vnd.ms-excel.addin.macroEnabled.12',
-            'xlsb' => 'application/vnd.ms-excel.sheet.binary.macroEnabled.12',
-            'class' => 'application/octet-stream',
-            'dll' => 'application/octet-stream',
-            'dms' => 'application/octet-stream',
-            'exe' => 'application/octet-stream',
-            'lha' => 'application/octet-stream',
-            'lzh' => 'application/octet-stream',
-            'psd' => 'application/octet-stream',
-            'sea' => 'application/octet-stream',
-            'so' => 'application/octet-stream',
-            'oda' => 'application/oda',
-            'pdf' => 'application/pdf',
-            'ai' => 'application/postscript',
-            'eps' => 'application/postscript',
-            'ps' => 'application/postscript',
-            'smi' => 'application/smil',
-            'smil' => 'application/smil',
-            'mif' => 'application/vnd.mif',
-            'xls' => 'application/vnd.ms-excel',
-            'ppt' => 'application/vnd.ms-powerpoint',
-            'wbxml' => 'application/vnd.wap.wbxml',
-            'wmlc' => 'application/vnd.wap.wmlc',
-            'dcr' => 'application/x-director',
-            'dir' => 'application/x-director',
-            'dxr' => 'application/x-director',
-            'dvi' => 'application/x-dvi',
-            'gtar' => 'application/x-gtar',
-            'php3' => 'application/x-httpd-php',
-            'php4' => 'application/x-httpd-php',
-            'php' => 'application/x-httpd-php',
-            'phtml' => 'application/x-httpd-php',
-            'phps' => 'application/x-httpd-php-source',
-            'swf' => 'application/x-shockwave-flash',
-            'sit' => 'application/x-stuffit',
-            'tar' => 'application/x-tar',
-            'tgz' => 'application/x-tar',
-            'xht' => 'application/xhtml+xml',
-            'xhtml' => 'application/xhtml+xml',
-            'zip' => 'application/zip',
-            'mid' => 'audio/midi',
-            'midi' => 'audio/midi',
-            'mp2' => 'audio/mpeg',
-            'mp3' => 'audio/mpeg',
-            'mpga' => 'audio/mpeg',
-            'aif' => 'audio/x-aiff',
-            'aifc' => 'audio/x-aiff',
-            'aiff' => 'audio/x-aiff',
-            'ram' => 'audio/x-pn-realaudio',
-            'rm' => 'audio/x-pn-realaudio',
-            'rpm' => 'audio/x-pn-realaudio-plugin',
-            'ra' => 'audio/x-realaudio',
-            'wav' => 'audio/x-wav',
-            'bmp' => 'image/bmp',
-            'gif' => 'image/gif',
-            'jpeg' => 'image/jpeg',
-            'jpe' => 'image/jpeg',
-            'jpg' => 'image/jpeg',
-            'png' => 'image/png',
-            'tiff' => 'image/tiff',
-            'tif' => 'image/tiff',
-            'eml' => 'message/rfc822',
-            'css' => 'text/css',
-            'html' => 'text/html',
-            'htm' => 'text/html',
-            'shtml' => 'text/html',
-            'log' => 'text/plain',
-            'text' => 'text/plain',
-            'txt' => 'text/plain',
-            'rtx' => 'text/richtext',
-            'rtf' => 'text/rtf',
-            'vcf' => 'text/vcard',
-            'vcard' => 'text/vcard',
-            'ics' => 'text/calendar',
-            'xml' => 'text/xml',
-            'xsl' => 'text/xml',
-            'mpeg' => 'video/mpeg',
-            'mpe' => 'video/mpeg',
-            'mpg' => 'video/mpeg',
-            'mov' => 'video/quicktime',
-            'qt' => 'video/quicktime',
-            'rv' => 'video/vnd.rn-realvideo',
-            'avi' => 'video/x-msvideo',
-            'movie' => 'video/x-sgi-movie',
-        ];
-        if (array_key_exists(strtolower($ext), $mimes)) {
-            return $mimes[strtolower($ext)];
-        }
-
-        return 'application/octet-stream';
-    }
-
-    /**
-     * Map a file name to a MIME type.
-     * Defaults to 'application/octet-stream', i.e.. arbitrary binary data.
-     *
-     * @param string $filename A file name or full path, does not need to exist as a file
-     *
-     * @return string
-     */
-    public static function filenameToType($filename)
-    {
-        // In case the path is a URL, strip any query string before getting extension
-        $qpos = strpos($filename, '?');
-        if (false !== $qpos) {
-            $filename = substr($filename, 0, $qpos);
-        }
-        $ext = static::mb_pathinfo($filename, PATHINFO_EXTENSION);
-
-        return static::_mime_types($ext);
-    }
-
-    /**
-     * Multi-byte-safe pathinfo replacement.
-     * Drop-in replacement for pathinfo(), but multibyte- and cross-platform-safe.
-     *
-     * @see    http://www.php.net/manual/en/function.pathinfo.php#107461
-     *
-     * @param string     $path    A filename or path, does not need to exist as a file
-     * @param int|string $options Either a PATHINFO_* constant,
-     *                            or a string name to return only the specified piece
-     *
-     * @return string|array
-     */
-    public static function mb_pathinfo($path, $options = null)
-    {
-        $ret = ['dirname' => '', 'basename' => '', 'extension' => '', 'filename' => ''];
-        $pathinfo = [];
-        if (preg_match('#^(.*?)[\\\\/]*(([^/\\\\]*?)(\.([^\.\\\\/]+?)|))[\\\\/\.]*$#im', $path, $pathinfo)) {
-            if (array_key_exists(1, $pathinfo)) {
-                $ret['dirname'] = $pathinfo[1];
-            }
-            if (array_key_exists(2, $pathinfo)) {
-                $ret['basename'] = $pathinfo[2];
-            }
-            if (array_key_exists(5, $pathinfo)) {
-                $ret['extension'] = $pathinfo[5];
-            }
-            if (array_key_exists(3, $pathinfo)) {
-                $ret['filename'] = $pathinfo[3];
-            }
-        }
-        switch ($options) {
-            case PATHINFO_DIRNAME:
-            case 'dirname':
-                return $ret['dirname'];
-            case PATHINFO_BASENAME:
-            case 'basename':
-                return $ret['basename'];
-            case PATHINFO_EXTENSION:
-            case 'extension':
-                return $ret['extension'];
-            case PATHINFO_FILENAME:
-            case 'filename':
-                return $ret['filename'];
-            default:
-                return $ret;
-        }
-    }
-
-    /**
-     * Set or reset instance properties.
-     * You should avoid this function - it's more verbose, less efficient, more error-prone and
-     * harder to debug than setting properties directly.
-     * Usage Example:
-     * `$mail->set('SMTPSecure', 'tls');`
-     *   is the same as:
-     * `$mail->SMTPSecure = 'tls';`.
-     *
-     * @param string $name  The property name to set
-     * @param mixed  $value The value to set the property to
-     *
-     * @return bool
-     */
-    public function set($name, $value = '')
-    {
-        if (property_exists($this, $name)) {
-            $this->$name = $value;
-
-            return true;
-        }
-        $this->setError($this->lang('variable_set') . $name);
-
-        return false;
-    }
-
-    /**
-     * Strip newlines to prevent header injection.
-     *
-     * @param string $str
-     *
-     * @return string
-     */
-    public function secureHeader($str)
-    {
-        return trim(str_replace(["\r", "\n"], '', $str));
-    }
-
-    /**
-     * Normalize line breaks in a string.
-     * Converts UNIX LF, Mac CR and Windows CRLF line breaks into a single line break format.
-     * Defaults to CRLF (for message bodies) and preserves consecutive breaks.
-     *
-     * @param string $text
-     * @param string $breaktype What kind of line break to use; defaults to static::$LE
-     *
-     * @return string
-     */
-    public static function normalizeBreaks($text, $breaktype = null)
-    {
-        if (null === $breaktype) {
-            $breaktype = static::$LE;
-        }
-        // Normalise to \n
-        $text = str_replace(["\r\n", "\r"], "\n", $text);
-        // Now convert LE as needed
-        if ("\n" !== static::$LE) {
-            $text = str_replace("\n", $breaktype, $text);
-        }
-
-        return $text;
-    }
-
-    /**
-     * Return the current line break format string.
-     *
-     * @return string
-     */
-    public static function getLE()
-    {
-        return static::$LE;
-    }
-
-    /**
-     * Set the line break format string, e.g. "\r\n".
-     *
-     * @param string $le
-     */
-    protected static function setLE($le)
-    {
-        static::$LE = $le;
-    }
-
-    /**
-     * Set the public and private key files and password for S/MIME signing.
-     *
-     * @param string $cert_filename
-     * @param string $key_filename
-     * @param string $key_pass            Password for private key
-     * @param string $extracerts_filename Optional path to chain certificate
-     */
-    public function sign($cert_filename, $key_filename, $key_pass, $extracerts_filename = '')
-    {
-        $this->sign_cert_file = $cert_filename;
-        $this->sign_key_file = $key_filename;
-        $this->sign_key_pass = $key_pass;
-        $this->sign_extracerts_file = $extracerts_filename;
-    }
-
-    /**
-     * Quoted-Printable-encode a DKIM header.
-     *
-     * @param string $txt
-     *
-     * @return string
-     */
-    public function DKIM_QP($txt)
-    {
-        $line = '';
-        $len = strlen($txt);
-        for ($i = 0; $i < $len; ++$i) {
-            $ord = ord($txt[$i]);
-            if (((0x21 <= $ord) and ($ord <= 0x3A)) or $ord == 0x3C or ((0x3E <= $ord) and ($ord <= 0x7E))) {
-                $line .= $txt[$i];
-            } else {
-                $line .= '=' . sprintf('%02X', $ord);
-            }
-        }
-
-        return $line;
-    }
-
-    /**
-     * Generate a DKIM signature.
-     *
-     * @param string $signHeader
-     *
-     * @throws Exception
-     *
-     * @return string The DKIM signature value
-     */
-    public function DKIM_Sign($signHeader)
-    {
-        if (!defined('PKCS7_TEXT')) {
-            if ($this->exceptions) {
-                throw new Exception($this->lang('extension_missing') . 'openssl');
-            }
-
-            return '';
-        }
-        $privKeyStr = !empty($this->DKIM_private_string) ?
-            $this->DKIM_private_string :
-            file_get_contents($this->DKIM_private);
-        if ('' != $this->DKIM_passphrase) {
-            $privKey = openssl_pkey_get_private($privKeyStr, $this->DKIM_passphrase);
-        } else {
-            $privKey = openssl_pkey_get_private($privKeyStr);
-        }
-        if (openssl_sign($signHeader, $signature, $privKey, 'sha256WithRSAEncryption')) {
-            openssl_pkey_free($privKey);
-
-            return base64_encode($signature);
-        }
-        openssl_pkey_free($privKey);
-
-        return '';
-    }
-
-    /**
-     * Generate a DKIM canonicalization header.
-     * Uses the 'relaxed' algorithm from RFC6376 section 3.4.2.
-     *
-     * @see    https://tools.ietf.org/html/rfc6376#section-3.4.2
-     *
-     * @param string $signHeader Header
-     *
-     * @return string
-     */
-    public function DKIM_HeaderC($signHeader)
-    {
-        //Unfold all header continuation lines
-        //Also collapses folded whitespace.
-        //Note PCRE \s is too broad a definition of whitespace; RFC5322 defines it as `[ \t]`
-        //@see https://tools.ietf.org/html/rfc5322#section-2.2
-        //That means this may break if you do something daft like put vertical tabs in your headers.
-        $signHeader = preg_replace('/\r\n[ \t]+/', ' ', $signHeader);
-        $lines = explode("\r\n", $signHeader);
-        foreach ($lines as $key => $line) {
-            //If the header is missing a :, skip it as it's invalid
-            //This is likely to happen because the explode() above will also split
-            //on the trailing LE, leaving an empty line
-            if (strpos($line, ':') === false) {
-                continue;
-            }
-            list($heading, $value) = explode(':', $line, 2);
-            //Lower-case header name
-            $heading = strtolower($heading);
-            //Collapse white space within the value
-            $value = preg_replace('/[ \t]{2,}/', ' ', $value);
-            //RFC6376 is slightly unclear here - it says to delete space at the *end* of each value
-            //But then says to delete space before and after the colon.
-            //Net result is the same as trimming both ends of the value.
-            //by elimination, the same applies to the field name
-            $lines[$key] = trim($heading, " \t") . ':' . trim($value, " \t");
-        }
-
-        return implode(static::$LE, $lines);
-    }
-
-    /**
-     * Generate a DKIM canonicalization body.
-     * Uses the 'simple' algorithm from RFC6376 section 3.4.3.
-     *
-     * @see    https://tools.ietf.org/html/rfc6376#section-3.4.3
-     *
-     * @param string $body Message Body
-     *
-     * @return string
-     */
-    public function DKIM_BodyC($body)
-    {
-        if (empty($body)) {
-            return static::$LE;
-        }
-        // Normalize line endings
-        $body = static::normalizeBreaks($body);
-
-        //Reduce multiple trailing line breaks to a single one
-        return rtrim($body, "\r\n") . static::$LE;
-    }
-
-    /**
-     * Create the DKIM header and body in a new message header.
-     *
-     * @param string $headers_line Header lines
-     * @param string $subject      Subject
-     * @param string $body         Body
-     *
-     * @return string
-     */
-    public function DKIM_Add($headers_line, $subject, $body)
-    {
-        $DKIMsignatureType = 'rsa-sha256'; // Signature & hash algorithms
-        $DKIMcanonicalization = 'relaxed/simple'; // Canonicalization of header/body
-        $DKIMquery = 'dns/txt'; // Query method
-        $DKIMtime = time(); // Signature Timestamp = seconds since 00:00:00 - Jan 1, 1970 (UTC time zone)
-        $subject_header = "Subject: $subject";
-        $headers = explode(static::$LE, $headers_line);
-        $from_header = '';
-        $to_header = '';
-        $date_header = '';
-        $current = '';
-        foreach ($headers as $header) {
-            if (strpos($header, 'From:') === 0) {
-                $from_header = $header;
-                $current = 'from_header';
-            } elseif (strpos($header, 'To:') === 0) {
-                $to_header = $header;
-                $current = 'to_header';
-            } elseif (strpos($header, 'Date:') === 0) {
-                $date_header = $header;
-                $current = 'date_header';
-            } else {
-                if (!empty($$current) and strpos($header, ' =?') === 0) {
-                    $$current .= $header;
-                } else {
-                    $current = '';
-                }
-            }
-        }
-        $from = str_replace('|', '=7C', $this->DKIM_QP($from_header));
-        $to = str_replace('|', '=7C', $this->DKIM_QP($to_header));
-        $date = str_replace('|', '=7C', $this->DKIM_QP($date_header));
-        $subject = str_replace(
-            '|',
-            '=7C',
-            $this->DKIM_QP($subject_header)
-        ); // Copied header fields (dkim-quoted-printable)
-        $body = $this->DKIM_BodyC($body);
-        $DKIMlen = strlen($body); // Length of body
-        $DKIMb64 = base64_encode(pack('H*', hash('sha256', $body))); // Base64 of packed binary SHA-256 hash of body
-        if ('' == $this->DKIM_identity) {
-            $ident = '';
-        } else {
-            $ident = ' i=' . $this->DKIM_identity . ';';
-        }
-        $dkimhdrs = 'DKIM-Signature: v=1; a=' .
-            $DKIMsignatureType . '; q=' .
-            $DKIMquery . '; l=' .
-            $DKIMlen . '; s=' .
-            $this->DKIM_selector .
-            ";\r\n" .
-            "\tt=" . $DKIMtime . '; c=' . $DKIMcanonicalization . ";\r\n" .
-            "\th=From:To:Date:Subject;\r\n" .
-            "\td=" . $this->DKIM_domain . ';' . $ident . "\r\n" .
-            "\tz=$from\r\n" .
-            "\t|$to\r\n" .
-            "\t|$date\r\n" .
-            "\t|$subject;\r\n" .
-            "\tbh=" . $DKIMb64 . ";\r\n" .
-            "\tb=";
-        $toSign = $this->DKIM_HeaderC(
-            $from_header . "\r\n" .
-            $to_header . "\r\n" .
-            $date_header . "\r\n" .
-            $subject_header . "\r\n" .
-            $dkimhdrs
-        );
-        $signed = $this->DKIM_Sign($toSign);
-
-        return static::normalizeBreaks($dkimhdrs . $signed) . static::$LE;
-    }
-
-    /**
-     * Detect if a string contains a line longer than the maximum line length
-     * allowed by RFC 2822 section 2.1.1.
-     *
-     * @param string $str
-     *
-     * @return bool
-     */
-    public static function hasLineLongerThanMax($str)
-    {
-        return (bool) preg_match('/^(.{' . (self::MAX_LINE_LENGTH + strlen(static::$LE)) . ',})/m', $str);
-    }
-
-    /**
-     * Allows for public read access to 'to' property.
-     * Before the send() call, queued addresses (i.e. with IDN) are not yet included.
-     *
-     * @return array
-     */
-    public function getToAddresses()
-    {
-        return $this->to;
-    }
-
-    /**
-     * Allows for public read access to 'cc' property.
-     * Before the send() call, queued addresses (i.e. with IDN) are not yet included.
-     *
-     * @return array
-     */
-    public function getCcAddresses()
-    {
-        return $this->cc;
-    }
-
-    /**
-     * Allows for public read access to 'bcc' property.
-     * Before the send() call, queued addresses (i.e. with IDN) are not yet included.
-     *
-     * @return array
-     */
-    public function getBccAddresses()
-    {
-        return $this->bcc;
-    }
-
-    /**
-     * Allows for public read access to 'ReplyTo' property.
-     * Before the send() call, queued addresses (i.e. with IDN) are not yet included.
-     *
-     * @return array
-     */
-    public function getReplyToAddresses()
-    {
-        return $this->ReplyTo;
-    }
-
-    /**
-     * Allows for public read access to 'all_recipients' property.
-     * Before the send() call, queued addresses (i.e. with IDN) are not yet included.
-     *
-     * @return array
-     */
-    public function getAllRecipientAddresses()
-    {
-        return $this->all_recipients;
-    }
-
-    /**
-     * Perform a callback.
-     *
-     * @param bool   $isSent
-     * @param array  $to
-     * @param array  $cc
-     * @param array  $bcc
-     * @param string $subject
-     * @param string $body
-     * @param string $from
-     * @param array  $extra
-     */
-    protected function doCallback($isSent, $to, $cc, $bcc, $subject, $body, $from, $extra)
-    {
-        if (!empty($this->action_function) and is_callable($this->action_function)) {
-            call_user_func_array($this->action_function, [$isSent, $to, $cc, $bcc, $subject, $body, $from, $extra]);
-        }
-    }
-
-    /**
-     * Get the OAuth instance.
-     *
-     * @return OAuth
-     */
-    public function getOAuth()
-    {
-        return $this->oauth;
-    }
-
-    /**
-     * Set an OAuth instance.
-     *
-     * @param OAuth $oauth
-     */
-    public function setOAuth(OAuth $oauth)
-    {
-        $this->oauth = $oauth;
-    }
+			/* @noinspection PhpMissingBreakStatementInspection */
+			case 'comment':
+				$pattern = '\(\)"';
+			/* Intentional fall through */
+			case 'text':
+			default:
+				// RFC 2047 section 5.1
+				// Replace every high ascii, control, =, ? and _ characters
+				$pattern = '\000-\011\013\014\016-\037\075\077\137\177-\377' . $pattern;
+				break;
+		}
+		$matches = [];
+		if (preg_match_all("/[{$pattern}]/", $encoded, $matches)) {
+			// If the string contains an '=', make sure it's the first thing we replace
+			// so as to avoid double-encoding
+			$eqkey = array_search('=', $matches[0]);
+			if (false !== $eqkey) {
+				unset($matches[0][$eqkey]);
+				array_unshift($matches[0], '=');
+			}
+			foreach (array_unique($matches[0]) as $char) {
+				$encoded = str_replace($char, '=' . sprintf('%02X', ord($char)), $encoded);
+			}
+		}
+		// Replace spaces with _ (more readable than =20)
+		// RFC 2047 section 4.2(2)
+		return str_replace(' ', '_', $encoded);
+	}
+
+	/**
+	 * Add a string or binary attachment (non-filesystem).
+	 * This method can be used to attach ascii or binary data,
+	 * such as a BLOB record from a database.
+	 *
+	 * @param string $string      String attachment data
+	 * @param string $filename    Name of the attachment
+	 * @param string $encoding    File encoding (see $Encoding)
+	 * @param string $type        File extension (MIME) type
+	 * @param string $disposition Disposition to use
+	 */
+	public function addStringAttachment(
+		$string,
+		$filename,
+		$encoding = 'base64',
+		$type = '',
+		$disposition = 'attachment'
+	) {
+		// If a MIME type is not specified, try to work it out from the file name
+		if ('' == $type) {
+			$type = static::filenameToType($filename);
+		}
+		// Append to $attachment array
+		$this->attachment[] = [
+			0 => $string,
+			1 => $filename,
+			2 => basename($filename),
+			3 => $encoding,
+			4 => $type,
+			5 => true, // isStringAttachment
+			6 => $disposition,
+			7 => 0,
+		];
+	}
+
+	/**
+	 * Add an embedded (inline) attachment from a file.
+	 * This can include images, sounds, and just about any other document type.
+	 * These differ from 'regular' attachments in that they are intended to be
+	 * displayed inline with the message, not just attached for download.
+	 * This is used in HTML messages that embed the images
+	 * the HTML refers to using the $cid value.
+	 * Never use a user-supplied path to a file!
+	 *
+	 * @param string $path        Path to the attachment
+	 * @param string $cid         Content ID of the attachment; Use this to reference
+	 *                            the content when using an embedded image in HTML
+	 * @param string $name        Overrides the attachment name
+	 * @param string $encoding    File encoding (see $Encoding)
+	 * @param string $type        File MIME type
+	 * @param string $disposition Disposition to use
+	 *
+	 * @return bool True on successfully adding an attachment
+	 */
+	public function addEmbeddedImage($path, $cid, $name = '', $encoding = 'base64', $type = '', $disposition = 'inline')
+	{
+		if (!@is_file($path)) {
+			$this->setError($this->lang('file_access') . $path);
+
+			return false;
+		}
+
+		// If a MIME type is not specified, try to work it out from the file name
+		if ('' == $type) {
+			$type = static::filenameToType($path);
+		}
+
+		$filename = basename($path);
+		if ('' == $name) {
+			$name = $filename;
+		}
+
+		// Append to $attachment array
+		$this->attachment[] = [
+			0 => $path,
+			1 => $filename,
+			2 => $name,
+			3 => $encoding,
+			4 => $type,
+			5 => false, // isStringAttachment
+			6 => $disposition,
+			7 => $cid,
+		];
+
+		return true;
+	}
+
+	/**
+	 * Add an embedded stringified attachment.
+	 * This can include images, sounds, and just about any other document type.
+	 * Be sure to set the $type to an image type for images:
+	 * JPEG images use 'image/jpeg', GIF uses 'image/gif', PNG uses 'image/png'.
+	 *
+	 * @param string $string      The attachment binary data
+	 * @param string $cid         Content ID of the attachment; Use this to reference
+	 *                            the content when using an embedded image in HTML
+	 * @param string $name
+	 * @param string $encoding    File encoding (see $Encoding)
+	 * @param string $type        MIME type
+	 * @param string $disposition Disposition to use
+	 *
+	 * @return bool True on successfully adding an attachment
+	 */
+	public function addStringEmbeddedImage(
+		$string,
+		$cid,
+		$name = '',
+		$encoding = 'base64',
+		$type = '',
+		$disposition = 'inline'
+	) {
+		// If a MIME type is not specified, try to work it out from the name
+		if ('' == $type and !empty($name)) {
+			$type = static::filenameToType($name);
+		}
+
+		// Append to $attachment array
+		$this->attachment[] = [
+			0 => $string,
+			1 => $name,
+			2 => $name,
+			3 => $encoding,
+			4 => $type,
+			5 => true, // isStringAttachment
+			6 => $disposition,
+			7 => $cid,
+		];
+
+		return true;
+	}
+
+	/**
+	 * Check if an embedded attachment is present with this cid.
+	 *
+	 * @param string $cid
+	 *
+	 * @return bool
+	 */
+	protected function cidExists($cid)
+	{
+		foreach ($this->attachment as $attachment) {
+			if ('inline' == $attachment[6] and $cid == $attachment[7]) {
+				return true;
+			}
+		}
+
+		return false;
+	}
+
+	/**
+	 * Check if an inline attachment is present.
+	 *
+	 * @return bool
+	 */
+	public function inlineImageExists()
+	{
+		foreach ($this->attachment as $attachment) {
+			if ($attachment[6] == 'inline') {
+				return true;
+			}
+		}
+
+		return false;
+	}
+
+	/**
+	 * Check if an attachment (non-inline) is present.
+	 *
+	 * @return bool
+	 */
+	public function attachmentExists()
+	{
+		foreach ($this->attachment as $attachment) {
+			if ($attachment[6] == 'attachment') {
+				return true;
+			}
+		}
+
+		return false;
+	}
+
+	/**
+	 * Check if this message has an alternative body set.
+	 *
+	 * @return bool
+	 */
+	public function alternativeExists()
+	{
+		return !empty($this->AltBody);
+	}
+
+	/**
+	 * Clear queued addresses of given kind.
+	 *
+	 * @param string $kind 'to', 'cc', or 'bcc'
+	 */
+	public function clearQueuedAddresses($kind)
+	{
+		$this->RecipientsQueue = array_filter(
+			$this->RecipientsQueue,
+			function ($params) use ($kind) {
+				return $params[0] != $kind;
+			}
+		);
+	}
+
+	/**
+	 * Clear all To recipients.
+	 */
+	public function clearAddresses()
+	{
+		foreach ($this->to as $to) {
+			unset($this->all_recipients[strtolower($to[0])]);
+		}
+		$this->to = [];
+		$this->clearQueuedAddresses('to');
+	}
+
+	/**
+	 * Clear all CC recipients.
+	 */
+	public function clearCCs()
+	{
+		foreach ($this->cc as $cc) {
+			unset($this->all_recipients[strtolower($cc[0])]);
+		}
+		$this->cc = [];
+		$this->clearQueuedAddresses('cc');
+	}
+
+	/**
+	 * Clear all BCC recipients.
+	 */
+	public function clearBCCs()
+	{
+		foreach ($this->bcc as $bcc) {
+			unset($this->all_recipients[strtolower($bcc[0])]);
+		}
+		$this->bcc = [];
+		$this->clearQueuedAddresses('bcc');
+	}
+
+	/**
+	 * Clear all ReplyTo recipients.
+	 */
+	public function clearReplyTos()
+	{
+		$this->ReplyTo = [];
+		$this->ReplyToQueue = [];
+	}
+
+	/**
+	 * Clear all recipient types.
+	 */
+	public function clearAllRecipients()
+	{
+		$this->to = [];
+		$this->cc = [];
+		$this->bcc = [];
+		$this->all_recipients = [];
+		$this->RecipientsQueue = [];
+	}
+
+	/**
+	 * Clear all filesystem, string, and binary attachments.
+	 */
+	public function clearAttachments()
+	{
+		$this->attachment = [];
+	}
+
+	/**
+	 * Clear all custom headers.
+	 */
+	public function clearCustomHeaders()
+	{
+		$this->CustomHeader = [];
+	}
+
+	/**
+	 * Add an error message to the error container.
+	 *
+	 * @param string $msg
+	 */
+	protected function setError($msg)
+	{
+		++$this->error_count;
+		if ('smtp' == $this->Mailer and null !== $this->smtp) {
+			$lasterror = $this->smtp->getError();
+			if (!empty($lasterror['error'])) {
+				$msg .= $this->lang('smtp_error') . $lasterror['error'];
+				if (!empty($lasterror['detail'])) {
+					$msg .= ' Detail: ' . $lasterror['detail'];
+				}
+				if (!empty($lasterror['smtp_code'])) {
+					$msg .= ' SMTP code: ' . $lasterror['smtp_code'];
+				}
+				if (!empty($lasterror['smtp_code_ex'])) {
+					$msg .= ' Additional SMTP info: ' . $lasterror['smtp_code_ex'];
+				}
+			}
+		}
+		$this->ErrorInfo = $msg;
+	}
+
+	/**
+	 * Return an RFC 822 formatted date.
+	 *
+	 * @return string
+	 */
+	public static function rfcDate()
+	{
+		// Set the time zone to whatever the default is to avoid 500 errors
+		// Will default to UTC if it's not set properly in php.ini
+		date_default_timezone_set(@date_default_timezone_get());
+
+		return date('D, j M Y H:i:s O');
+	}
+
+	/**
+	 * Get the server hostname.
+	 * Returns 'localhost.localdomain' if unknown.
+	 *
+	 * @return string
+	 */
+	protected function serverHostname()
+	{
+		$result = '';
+		if (!empty($this->Hostname)) {
+			$result = $this->Hostname;
+		} elseif (isset($_SERVER) and array_key_exists('SERVER_NAME', $_SERVER)) {
+			$result = $_SERVER['SERVER_NAME'];
+		} elseif (function_exists('gethostname') and gethostname() !== false) {
+			$result = gethostname();
+		} elseif (php_uname('n') !== false) {
+			$result = php_uname('n');
+		}
+		if (!static::isValidHost($result)) {
+			return 'localhost.localdomain';
+		}
+
+		return $result;
+	}
+
+	/**
+	 * Validate whether a string contains a valid value to use as a hostname or IP address.
+	 * IPv6 addresses must include [], e.g. `[::1]`, not just `::1`.
+	 *
+	 * @param string $host The host name or IP address to check
+	 *
+	 * @return bool
+	 */
+	public static function isValidHost($host)
+	{
+		//Simple syntax limits
+		if (empty($host)
+			or !is_string($host)
+			or strlen($host) > 256
+		) {
+			return false;
+		}
+		//Looks like a bracketed IPv6 address
+		if (trim($host, '[]') != $host) {
+			return (bool) filter_var(trim($host, '[]'), FILTER_VALIDATE_IP, FILTER_FLAG_IPV6);
+		}
+		//If removing all the dots results in a numeric string, it must be an IPv4 address.
+		//Need to check this first because otherwise things like `999.0.0.0` are considered valid host names
+		if (is_numeric(str_replace('.', '', $host))) {
+			//Is it a valid IPv4 address?
+			return (bool) filter_var($host, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4);
+		}
+		if (filter_var('http://' . $host, FILTER_VALIDATE_URL, FILTER_FLAG_HOST_REQUIRED)) {
+			//Is it a syntactically valid hostname?
+			return true;
+		}
+
+		return false;
+	}
+
+	/**
+	 * Get an error message in the current language.
+	 *
+	 * @param string $key
+	 *
+	 * @return string
+	 */
+	protected function lang($key)
+	{
+		if (count($this->language) < 1) {
+			$this->setLanguage('en'); // set the default language
+		}
+
+		if (array_key_exists($key, $this->language)) {
+			if ('smtp_connect_failed' == $key) {
+				//Include a link to troubleshooting docs on SMTP connection failure
+				//this is by far the biggest cause of support questions
+				//but it's usually not PHPMailer's fault.
+				return $this->language[$key] . ' https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting';
+			}
+
+			return $this->language[$key];
+		}
+
+		//Return the key as a fallback
+		return $key;
+	}
+
+	/**
+	 * Check if an error occurred.
+	 *
+	 * @return bool True if an error did occur
+	 */
+	public function isError()
+	{
+		return $this->error_count > 0;
+	}
+
+	/**
+	 * Add a custom header.
+	 * $name value can be overloaded to contain
+	 * both header name and value (name:value).
+	 *
+	 * @param string      $name  Custom header name
+	 * @param string|null $value Header value
+	 */
+	public function addCustomHeader($name, $value = null)
+	{
+		if (null === $value) {
+			// Value passed in as name:value
+			$this->CustomHeader[] = explode(':', $name, 2);
+		} else {
+			$this->CustomHeader[] = [$name, $value];
+		}
+	}
+
+	/**
+	 * Returns all custom headers.
+	 *
+	 * @return array
+	 */
+	public function getCustomHeaders()
+	{
+		return $this->CustomHeader;
+	}
+
+	/**
+	 * Create a message body from an HTML string.
+	 * Automatically inlines images and creates a plain-text version by converting the HTML,
+	 * overwriting any existing values in Body and AltBody.
+	 * Do not source $message content from user input!
+	 * $basedir is prepended when handling relative URLs, e.g. <img src="/images/a.png"> and must not be empty
+	 * will look for an image file in $basedir/images/a.png and convert it to inline.
+	 * If you don't provide a $basedir, relative paths will be left untouched (and thus probably break in email)
+	 * Converts data-uri images into embedded attachments.
+	 * If you don't want to apply these transformations to your HTML, just set Body and AltBody directly.
+	 *
+	 * @param string        $message  HTML message string
+	 * @param string        $basedir  Absolute path to a base directory to prepend to relative paths to images
+	 * @param bool|callable $advanced Whether to use the internal HTML to text converter
+	 *                                or your own custom converter @see PHPMailer::html2text()
+	 *
+	 * @return string $message The transformed message Body
+	 */
+	public function msgHTML($message, $basedir = '', $advanced = false)
+	{
+		preg_match_all('/(src|background)=["\'](.*)["\']/Ui', $message, $images);
+		if (array_key_exists(2, $images)) {
+			if (strlen($basedir) > 1 && substr($basedir, -1) != '/') {
+				// Ensure $basedir has a trailing /
+				$basedir .= '/';
+			}
+			foreach ($images[2] as $imgindex => $url) {
+				// Convert data URIs into embedded images
+				//e.g. "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="
+				if (preg_match('#^data:(image/(?:jpe?g|gif|png));?(base64)?,(.+)#', $url, $match)) {
+					if (count($match) == 4 and 'base64' == $match[2]) {
+						$data = base64_decode($match[3]);
+					} elseif ('' == $match[2]) {
+						$data = rawurldecode($match[3]);
+					} else {
+						//Not recognised so leave it alone
+						continue;
+					}
+					//Hash the decoded data, not the URL so that the same data-URI image used in multiple places
+					//will only be embedded once, even if it used a different encoding
+					$cid = hash('sha256', $data) . '@phpmailer.0'; // RFC2392 S 2
+
+					if (!$this->cidExists($cid)) {
+						$this->addStringEmbeddedImage($data, $cid, 'embed' . $imgindex, 'base64', $match[1]);
+					}
+					$message = str_replace(
+						$images[0][$imgindex],
+						$images[1][$imgindex] . '="cid:' . $cid . '"',
+						$message
+					);
+					continue;
+				}
+				if (// Only process relative URLs if a basedir is provided (i.e. no absolute local paths)
+					!empty($basedir)
+					// Ignore URLs containing parent dir traversal (..)
+					and (strpos($url, '..') === false)
+					// Do not change urls that are already inline images
+					and substr($url, 0, 4) !== 'cid:'
+					// Do not change absolute URLs, including anonymous protocol
+					and !preg_match('#^[a-z][a-z0-9+.-]*:?//#i', $url)
+				) {
+					$filename = basename($url);
+					$directory = dirname($url);
+					if ('.' == $directory) {
+						$directory = '';
+					}
+					$cid = hash('sha256', $url) . '@phpmailer.0'; // RFC2392 S 2
+					if (strlen($basedir) > 1 and substr($basedir, -1) != '/') {
+						$basedir .= '/';
+					}
+					if (strlen($directory) > 1 and substr($directory, -1) != '/') {
+						$directory .= '/';
+					}
+					if ($this->addEmbeddedImage(
+						$basedir . $directory . $filename,
+						$cid,
+						$filename,
+						'base64',
+						static::_mime_types((string) static::mb_pathinfo($filename, PATHINFO_EXTENSION))
+					)
+					) {
+						$message = preg_replace(
+							'/' . $images[1][$imgindex] . '=["\']' . preg_quote($url, '/') . '["\']/Ui',
+							$images[1][$imgindex] . '="cid:' . $cid . '"',
+							$message
+						);
+					}
+				}
+			}
+		}
+		$this->isHTML(true);
+		// Convert all message body line breaks to LE, makes quoted-printable encoding work much better
+		$this->Body = static::normalizeBreaks($message);
+		$this->AltBody = static::normalizeBreaks($this->html2text($message, $advanced));
+		if (!$this->alternativeExists()) {
+			$this->AltBody = 'This is an HTML-only message. To view it, activate HTML in your email application.'
+				. static::$LE;
+		}
+
+		return $this->Body;
+	}
+
+	/**
+	 * Convert an HTML string into plain text.
+	 * This is used by msgHTML().
+	 * Note - older versions of this function used a bundled advanced converter
+	 * which was removed for license reasons in #232.
+	 * Example usage:
+	 *
+	 * ```php
+	 * // Use default conversion
+	 * $plain = $mail->html2text($html);
+	 * // Use your own custom converter
+	 * $plain = $mail->html2text($html, function($html) {
+	 *     $converter = new MyHtml2text($html);
+	 *     return $converter->get_text();
+	 * });
+	 * ```
+	 *
+	 * @param string        $html     The HTML text to convert
+	 * @param bool|callable $advanced Any boolean value to use the internal converter,
+	 *                                or provide your own callable for custom conversion
+	 *
+	 * @return string
+	 */
+	public function html2text($html, $advanced = false)
+	{
+		if (is_callable($advanced)) {
+			return call_user_func($advanced, $html);
+		}
+
+		return html_entity_decode(
+			trim(strip_tags(preg_replace('/<(head|title|style|script)[^>]*>.*?<\/\\1>/si', '', $html))),
+			ENT_QUOTES,
+			$this->CharSet
+		);
+	}
+
+	/**
+	 * Get the MIME type for a file extension.
+	 *
+	 * @param string $ext File extension
+	 *
+	 * @return string MIME type of file
+	 */
+	public static function _mime_types($ext = '')
+	{
+		$mimes = [
+			'xl' => 'application/excel',
+			'js' => 'application/javascript',
+			'hqx' => 'application/mac-binhex40',
+			'cpt' => 'application/mac-compactpro',
+			'bin' => 'application/macbinary',
+			'doc' => 'application/msword',
+			'word' => 'application/msword',
+			'xlsx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
+			'xltx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.template',
+			'potx' => 'application/vnd.openxmlformats-officedocument.presentationml.template',
+			'ppsx' => 'application/vnd.openxmlformats-officedocument.presentationml.slideshow',
+			'pptx' => 'application/vnd.openxmlformats-officedocument.presentationml.presentation',
+			'sldx' => 'application/vnd.openxmlformats-officedocument.presentationml.slide',
+			'docx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
+			'dotx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.template',
+			'xlam' => 'application/vnd.ms-excel.addin.macroEnabled.12',
+			'xlsb' => 'application/vnd.ms-excel.sheet.binary.macroEnabled.12',
+			'class' => 'application/octet-stream',
+			'dll' => 'application/octet-stream',
+			'dms' => 'application/octet-stream',
+			'exe' => 'application/octet-stream',
+			'lha' => 'application/octet-stream',
+			'lzh' => 'application/octet-stream',
+			'psd' => 'application/octet-stream',
+			'sea' => 'application/octet-stream',
+			'so' => 'application/octet-stream',
+			'oda' => 'application/oda',
+			'pdf' => 'application/pdf',
+			'ai' => 'application/postscript',
+			'eps' => 'application/postscript',
+			'ps' => 'application/postscript',
+			'smi' => 'application/smil',
+			'smil' => 'application/smil',
+			'mif' => 'application/vnd.mif',
+			'xls' => 'application/vnd.ms-excel',
+			'ppt' => 'application/vnd.ms-powerpoint',
+			'wbxml' => 'application/vnd.wap.wbxml',
+			'wmlc' => 'application/vnd.wap.wmlc',
+			'dcr' => 'application/x-director',
+			'dir' => 'application/x-director',
+			'dxr' => 'application/x-director',
+			'dvi' => 'application/x-dvi',
+			'gtar' => 'application/x-gtar',
+			'php3' => 'application/x-httpd-php',
+			'php4' => 'application/x-httpd-php',
+			'php' => 'application/x-httpd-php',
+			'phtml' => 'application/x-httpd-php',
+			'phps' => 'application/x-httpd-php-source',
+			'swf' => 'application/x-shockwave-flash',
+			'sit' => 'application/x-stuffit',
+			'tar' => 'application/x-tar',
+			'tgz' => 'application/x-tar',
+			'xht' => 'application/xhtml+xml',
+			'xhtml' => 'application/xhtml+xml',
+			'zip' => 'application/zip',
+			'mid' => 'audio/midi',
+			'midi' => 'audio/midi',
+			'mp2' => 'audio/mpeg',
+			'mp3' => 'audio/mpeg',
+			'mpga' => 'audio/mpeg',
+			'aif' => 'audio/x-aiff',
+			'aifc' => 'audio/x-aiff',
+			'aiff' => 'audio/x-aiff',
+			'ram' => 'audio/x-pn-realaudio',
+			'rm' => 'audio/x-pn-realaudio',
+			'rpm' => 'audio/x-pn-realaudio-plugin',
+			'ra' => 'audio/x-realaudio',
+			'wav' => 'audio/x-wav',
+			'bmp' => 'image/bmp',
+			'gif' => 'image/gif',
+			'jpeg' => 'image/jpeg',
+			'jpe' => 'image/jpeg',
+			'jpg' => 'image/jpeg',
+			'png' => 'image/png',
+			'tiff' => 'image/tiff',
+			'tif' => 'image/tiff',
+			'eml' => 'message/rfc822',
+			'css' => 'text/css',
+			'html' => 'text/html',
+			'htm' => 'text/html',
+			'shtml' => 'text/html',
+			'log' => 'text/plain',
+			'text' => 'text/plain',
+			'txt' => 'text/plain',
+			'rtx' => 'text/richtext',
+			'rtf' => 'text/rtf',
+			'vcf' => 'text/vcard',
+			'vcard' => 'text/vcard',
+			'ics' => 'text/calendar',
+			'xml' => 'text/xml',
+			'xsl' => 'text/xml',
+			'mpeg' => 'video/mpeg',
+			'mpe' => 'video/mpeg',
+			'mpg' => 'video/mpeg',
+			'mov' => 'video/quicktime',
+			'qt' => 'video/quicktime',
+			'rv' => 'video/vnd.rn-realvideo',
+			'avi' => 'video/x-msvideo',
+			'movie' => 'video/x-sgi-movie',
+		];
+		if (array_key_exists(strtolower($ext), $mimes)) {
+			return $mimes[strtolower($ext)];
+		}
+
+		return 'application/octet-stream';
+	}
+
+	/**
+	 * Map a file name to a MIME type.
+	 * Defaults to 'application/octet-stream', i.e.. arbitrary binary data.
+	 *
+	 * @param string $filename A file name or full path, does not need to exist as a file
+	 *
+	 * @return string
+	 */
+	public static function filenameToType($filename)
+	{
+		// In case the path is a URL, strip any query string before getting extension
+		$qpos = strpos($filename, '?');
+		if (false !== $qpos) {
+			$filename = substr($filename, 0, $qpos);
+		}
+		$ext = static::mb_pathinfo($filename, PATHINFO_EXTENSION);
+
+		return static::_mime_types($ext);
+	}
+
+	/**
+	 * Multi-byte-safe pathinfo replacement.
+	 * Drop-in replacement for pathinfo(), but multibyte- and cross-platform-safe.
+	 *
+	 * @see    http://www.php.net/manual/en/function.pathinfo.php#107461
+	 *
+	 * @param string     $path    A filename or path, does not need to exist as a file
+	 * @param int|string $options Either a PATHINFO_* constant,
+	 *                            or a string name to return only the specified piece
+	 *
+	 * @return string|array
+	 */
+	public static function mb_pathinfo($path, $options = null)
+	{
+		$ret = ['dirname' => '', 'basename' => '', 'extension' => '', 'filename' => ''];
+		$pathinfo = [];
+		if (preg_match('#^(.*?)[\\\\/]*(([^/\\\\]*?)(\.([^\.\\\\/]+?)|))[\\\\/\.]*$#im', $path, $pathinfo)) {
+			if (array_key_exists(1, $pathinfo)) {
+				$ret['dirname'] = $pathinfo[1];
+			}
+			if (array_key_exists(2, $pathinfo)) {
+				$ret['basename'] = $pathinfo[2];
+			}
+			if (array_key_exists(5, $pathinfo)) {
+				$ret['extension'] = $pathinfo[5];
+			}
+			if (array_key_exists(3, $pathinfo)) {
+				$ret['filename'] = $pathinfo[3];
+			}
+		}
+		switch ($options) {
+			case PATHINFO_DIRNAME:
+			case 'dirname':
+				return $ret['dirname'];
+			case PATHINFO_BASENAME:
+			case 'basename':
+				return $ret['basename'];
+			case PATHINFO_EXTENSION:
+			case 'extension':
+				return $ret['extension'];
+			case PATHINFO_FILENAME:
+			case 'filename':
+				return $ret['filename'];
+			default:
+				return $ret;
+		}
+	}
+
+	/**
+	 * Set or reset instance properties.
+	 * You should avoid this function - it's more verbose, less efficient, more error-prone and
+	 * harder to debug than setting properties directly.
+	 * Usage Example:
+	 * `$mail->set('SMTPSecure', 'tls');`
+	 *   is the same as:
+	 * `$mail->SMTPSecure = 'tls';`.
+	 *
+	 * @param string $name  The property name to set
+	 * @param mixed  $value The value to set the property to
+	 *
+	 * @return bool
+	 */
+	public function set($name, $value = '')
+	{
+		if (property_exists($this, $name)) {
+			$this->$name = $value;
+
+			return true;
+		}
+		$this->setError($this->lang('variable_set') . $name);
+
+		return false;
+	}
+
+	/**
+	 * Strip newlines to prevent header injection.
+	 *
+	 * @param string $str
+	 *
+	 * @return string
+	 */
+	public function secureHeader($str)
+	{
+		return trim(str_replace(["\r", "\n"], '', $str));
+	}
+
+	/**
+	 * Normalize line breaks in a string.
+	 * Converts UNIX LF, Mac CR and Windows CRLF line breaks into a single line break format.
+	 * Defaults to CRLF (for message bodies) and preserves consecutive breaks.
+	 *
+	 * @param string $text
+	 * @param string $breaktype What kind of line break to use; defaults to static::$LE
+	 *
+	 * @return string
+	 */
+	public static function normalizeBreaks($text, $breaktype = null)
+	{
+		if (null === $breaktype) {
+			$breaktype = static::$LE;
+		}
+		// Normalise to \n
+		$text = str_replace(["\r\n", "\r"], "\n", $text);
+		// Now convert LE as needed
+		if ("\n" !== static::$LE) {
+			$text = str_replace("\n", $breaktype, $text);
+		}
+
+		return $text;
+	}
+
+	/**
+	 * Return the current line break format string.
+	 *
+	 * @return string
+	 */
+	public static function getLE()
+	{
+		return static::$LE;
+	}
+
+	/**
+	 * Set the line break format string, e.g. "\r\n".
+	 *
+	 * @param string $le
+	 */
+	protected static function setLE($le)
+	{
+		static::$LE = $le;
+	}
+
+	/**
+	 * Set the public and private key files and password for S/MIME signing.
+	 *
+	 * @param string $cert_filename
+	 * @param string $key_filename
+	 * @param string $key_pass            Password for private key
+	 * @param string $extracerts_filename Optional path to chain certificate
+	 */
+	public function sign($cert_filename, $key_filename, $key_pass, $extracerts_filename = '')
+	{
+		$this->sign_cert_file = $cert_filename;
+		$this->sign_key_file = $key_filename;
+		$this->sign_key_pass = $key_pass;
+		$this->sign_extracerts_file = $extracerts_filename;
+	}
+
+	/**
+	 * Quoted-Printable-encode a DKIM header.
+	 *
+	 * @param string $txt
+	 *
+	 * @return string
+	 */
+	public function DKIM_QP($txt)
+	{
+		$line = '';
+		$len = strlen($txt);
+		for ($i = 0; $i < $len; ++$i) {
+			$ord = ord($txt[$i]);
+			if (((0x21 <= $ord) and ($ord <= 0x3A)) or $ord == 0x3C or ((0x3E <= $ord) and ($ord <= 0x7E))) {
+				$line .= $txt[$i];
+			} else {
+				$line .= '=' . sprintf('%02X', $ord);
+			}
+		}
+
+		return $line;
+	}
+
+	/**
+	 * Generate a DKIM signature.
+	 *
+	 * @param string $signHeader
+	 *
+	 * @throws Exception
+	 *
+	 * @return string The DKIM signature value
+	 */
+	public function DKIM_Sign($signHeader)
+	{
+		if (!defined('PKCS7_TEXT')) {
+			if ($this->exceptions) {
+				throw new Exception($this->lang('extension_missing') . 'openssl');
+			}
+
+			return '';
+		}
+		$privKeyStr = !empty($this->DKIM_private_string) ?
+			$this->DKIM_private_string :
+			file_get_contents($this->DKIM_private);
+		if ('' != $this->DKIM_passphrase) {
+			$privKey = openssl_pkey_get_private($privKeyStr, $this->DKIM_passphrase);
+		} else {
+			$privKey = openssl_pkey_get_private($privKeyStr);
+		}
+		if (openssl_sign($signHeader, $signature, $privKey, 'sha256WithRSAEncryption')) {
+			openssl_pkey_free($privKey);
+
+			return base64_encode($signature);
+		}
+		openssl_pkey_free($privKey);
+
+		return '';
+	}
+
+	/**
+	 * Generate a DKIM canonicalization header.
+	 * Uses the 'relaxed' algorithm from RFC6376 section 3.4.2.
+	 *
+	 * @see    https://tools.ietf.org/html/rfc6376#section-3.4.2
+	 *
+	 * @param string $signHeader Header
+	 *
+	 * @return string
+	 */
+	public function DKIM_HeaderC($signHeader)
+	{
+		//Unfold all header continuation lines
+		//Also collapses folded whitespace.
+		//Note PCRE \s is too broad a definition of whitespace; RFC5322 defines it as `[ \t]`
+		//@see https://tools.ietf.org/html/rfc5322#section-2.2
+		//That means this may break if you do something daft like put vertical tabs in your headers.
+		$signHeader = preg_replace('/\r\n[ \t]+/', ' ', $signHeader);
+		$lines = explode("\r\n", $signHeader);
+		foreach ($lines as $key => $line) {
+			//If the header is missing a :, skip it as it's invalid
+			//This is likely to happen because the explode() above will also split
+			//on the trailing LE, leaving an empty line
+			if (strpos($line, ':') === false) {
+				continue;
+			}
+			list($heading, $value) = explode(':', $line, 2);
+			//Lower-case header name
+			$heading = strtolower($heading);
+			//Collapse white space within the value
+			$value = preg_replace('/[ \t]{2,}/', ' ', $value);
+			//RFC6376 is slightly unclear here - it says to delete space at the *end* of each value
+			//But then says to delete space before and after the colon.
+			//Net result is the same as trimming both ends of the value.
+			//by elimination, the same applies to the field name
+			$lines[$key] = trim($heading, " \t") . ':' . trim($value, " \t");
+		}
+
+		return implode(static::$LE, $lines);
+	}
+
+	/**
+	 * Generate a DKIM canonicalization body.
+	 * Uses the 'simple' algorithm from RFC6376 section 3.4.3.
+	 *
+	 * @see    https://tools.ietf.org/html/rfc6376#section-3.4.3
+	 *
+	 * @param string $body Message Body
+	 *
+	 * @return string
+	 */
+	public function DKIM_BodyC($body)
+	{
+		if (empty($body)) {
+			return static::$LE;
+		}
+		// Normalize line endings
+		$body = static::normalizeBreaks($body);
+
+		//Reduce multiple trailing line breaks to a single one
+		return rtrim($body, "\r\n") . static::$LE;
+	}
+
+	/**
+	 * Create the DKIM header and body in a new message header.
+	 *
+	 * @param string $headers_line Header lines
+	 * @param string $subject      Subject
+	 * @param string $body         Body
+	 *
+	 * @return string
+	 */
+	public function DKIM_Add($headers_line, $subject, $body)
+	{
+		$DKIMsignatureType = 'rsa-sha256'; // Signature & hash algorithms
+		$DKIMcanonicalization = 'relaxed/simple'; // Canonicalization of header/body
+		$DKIMquery = 'dns/txt'; // Query method
+		$DKIMtime = time(); // Signature Timestamp = seconds since 00:00:00 - Jan 1, 1970 (UTC time zone)
+		$subject_header = "Subject: $subject";
+		$headers = explode(static::$LE, $headers_line);
+		$from_header = '';
+		$to_header = '';
+		$date_header = '';
+		$current = '';
+		foreach ($headers as $header) {
+			if (strpos($header, 'From:') === 0) {
+				$from_header = $header;
+				$current = 'from_header';
+			} elseif (strpos($header, 'To:') === 0) {
+				$to_header = $header;
+				$current = 'to_header';
+			} elseif (strpos($header, 'Date:') === 0) {
+				$date_header = $header;
+				$current = 'date_header';
+			} else {
+				if (!empty($$current) and strpos($header, ' =?') === 0) {
+					$$current .= $header;
+				} else {
+					$current = '';
+				}
+			}
+		}
+		$from = str_replace('|', '=7C', $this->DKIM_QP($from_header));
+		$to = str_replace('|', '=7C', $this->DKIM_QP($to_header));
+		$date = str_replace('|', '=7C', $this->DKIM_QP($date_header));
+		$subject = str_replace(
+			'|',
+			'=7C',
+			$this->DKIM_QP($subject_header)
+		); // Copied header fields (dkim-quoted-printable)
+		$body = $this->DKIM_BodyC($body);
+		$DKIMlen = strlen($body); // Length of body
+		$DKIMb64 = base64_encode(pack('H*', hash('sha256', $body))); // Base64 of packed binary SHA-256 hash of body
+		if ('' == $this->DKIM_identity) {
+			$ident = '';
+		} else {
+			$ident = ' i=' . $this->DKIM_identity . ';';
+		}
+		$dkimhdrs = 'DKIM-Signature: v=1; a=' .
+			$DKIMsignatureType . '; q=' .
+			$DKIMquery . '; l=' .
+			$DKIMlen . '; s=' .
+			$this->DKIM_selector .
+			";\r\n" .
+			"\tt=" . $DKIMtime . '; c=' . $DKIMcanonicalization . ";\r\n" .
+			"\th=From:To:Date:Subject;\r\n" .
+			"\td=" . $this->DKIM_domain . ';' . $ident . "\r\n" .
+			"\tz=$from\r\n" .
+			"\t|$to\r\n" .
+			"\t|$date\r\n" .
+			"\t|$subject;\r\n" .
+			"\tbh=" . $DKIMb64 . ";\r\n" .
+			"\tb=";
+		$toSign = $this->DKIM_HeaderC(
+			$from_header . "\r\n" .
+			$to_header . "\r\n" .
+			$date_header . "\r\n" .
+			$subject_header . "\r\n" .
+			$dkimhdrs
+		);
+		$signed = $this->DKIM_Sign($toSign);
+
+		return static::normalizeBreaks($dkimhdrs . $signed) . static::$LE;
+	}
+
+	/**
+	 * Detect if a string contains a line longer than the maximum line length
+	 * allowed by RFC 2822 section 2.1.1.
+	 *
+	 * @param string $str
+	 *
+	 * @return bool
+	 */
+	public static function hasLineLongerThanMax($str)
+	{
+		return (bool) preg_match('/^(.{' . (self::MAX_LINE_LENGTH + strlen(static::$LE)) . ',})/m', $str);
+	}
+
+	/**
+	 * Allows for public read access to 'to' property.
+	 * Before the send() call, queued addresses (i.e. with IDN) are not yet included.
+	 *
+	 * @return array
+	 */
+	public function getToAddresses()
+	{
+		return $this->to;
+	}
+
+	/**
+	 * Allows for public read access to 'cc' property.
+	 * Before the send() call, queued addresses (i.e. with IDN) are not yet included.
+	 *
+	 * @return array
+	 */
+	public function getCcAddresses()
+	{
+		return $this->cc;
+	}
+
+	/**
+	 * Allows for public read access to 'bcc' property.
+	 * Before the send() call, queued addresses (i.e. with IDN) are not yet included.
+	 *
+	 * @return array
+	 */
+	public function getBccAddresses()
+	{
+		return $this->bcc;
+	}
+
+	/**
+	 * Allows for public read access to 'ReplyTo' property.
+	 * Before the send() call, queued addresses (i.e. with IDN) are not yet included.
+	 *
+	 * @return array
+	 */
+	public function getReplyToAddresses()
+	{
+		return $this->ReplyTo;
+	}
+
+	/**
+	 * Allows for public read access to 'all_recipients' property.
+	 * Before the send() call, queued addresses (i.e. with IDN) are not yet included.
+	 *
+	 * @return array
+	 */
+	public function getAllRecipientAddresses()
+	{
+		return $this->all_recipients;
+	}
+
+	/**
+	 * Perform a callback.
+	 *
+	 * @param bool   $isSent
+	 * @param array  $to
+	 * @param array  $cc
+	 * @param array  $bcc
+	 * @param string $subject
+	 * @param string $body
+	 * @param string $from
+	 * @param array  $extra
+	 */
+	protected function doCallback($isSent, $to, $cc, $bcc, $subject, $body, $from, $extra)
+	{
+		if (!empty($this->action_function) and is_callable($this->action_function)) {
+			call_user_func_array($this->action_function, [$isSent, $to, $cc, $bcc, $subject, $body, $from, $extra]);
+		}
+	}
+
+	/**
+	 * Get the OAuth instance.
+	 *
+	 * @return OAuth
+	 */
+	public function getOAuth()
+	{
+		return $this->oauth;
+	}
+
+	/**
+	 * Set an OAuth instance.
+	 *
+	 * @param OAuth $oauth
+	 */
+	public function setOAuth(OAuth $oauth)
+	{
+		$this->oauth = $oauth;
+	}
 }

www/vendor/PHPMailer/PHPMailer/Exception.php

Indentation +9 added lines, -9 removed lines

@@ -27,13 +27,13 @@
  */
 class Exception extends \Exception
 {
-    /**
-     * Prettify error message output.
-     *
-     * @return string
-     */
-    public function errorMessage()
-    {
-        return '<strong>' . htmlspecialchars($this->getMessage()) . "</strong><br />\n";
-    }
+	/**
+	 * Prettify error message output.
+	 *
+	 * @return string
+	 */
+	public function errorMessage()
+	{
+		return '<strong>' . htmlspecialchars($this->getMessage()) . "</strong><br />\n";
+	}
 }

www/vendor/PHPMailer/PHPMailer/OAuth.php

Indentation +91 added lines, -91 removed lines

@@ -34,105 +34,105 @@
  */
 class OAuth
 {
-    /**
-     * An instance of the League OAuth Client Provider.
-     *
-     * @var AbstractProvider
-     */
-    protected $provider = null;
+	/**
+	 * An instance of the League OAuth Client Provider.
+	 *
+	 * @var AbstractProvider
+	 */
+	protected $provider = null;
 
-    /**
-     * The current OAuth access token.
-     *
-     * @var AccessToken
-     */
-    protected $oauthToken = null;
+	/**
+	 * The current OAuth access token.
+	 *
+	 * @var AccessToken
+	 */
+	protected $oauthToken = null;
 
-    /**
-     * The user's email address, usually used as the login ID
-     * and also the from address when sending email.
-     *
-     * @var string
-     */
-    protected $oauthUserEmail = '';
+	/**
+	 * The user's email address, usually used as the login ID
+	 * and also the from address when sending email.
+	 *
+	 * @var string
+	 */
+	protected $oauthUserEmail = '';
 
-    /**
-     * The client secret, generated in the app definition of the service you're connecting to.
-     *
-     * @var string
-     */
-    protected $oauthClientSecret = '';
+	/**
+	 * The client secret, generated in the app definition of the service you're connecting to.
+	 *
+	 * @var string
+	 */
+	protected $oauthClientSecret = '';
 
-    /**
-     * The client ID, generated in the app definition of the service you're connecting to.
-     *
-     * @var string
-     */
-    protected $oauthClientId = '';
+	/**
+	 * The client ID, generated in the app definition of the service you're connecting to.
+	 *
+	 * @var string
+	 */
+	protected $oauthClientId = '';
 
-    /**
-     * The refresh token, used to obtain new AccessTokens.
-     *
-     * @var string
-     */
-    protected $oauthRefreshToken = '';
+	/**
+	 * The refresh token, used to obtain new AccessTokens.
+	 *
+	 * @var string
+	 */
+	protected $oauthRefreshToken = '';
 
-    /**
-     * OAuth constructor.
-     *
-     * @param array $options Associative array containing
-     *                       `provider`, `userName`, `clientSecret`, `clientId` and `refreshToken` elements
-     */
-    public function __construct($options)
-    {
-        $this->provider = $options['provider'];
-        $this->oauthUserEmail = $options['userName'];
-        $this->oauthClientSecret = $options['clientSecret'];
-        $this->oauthClientId = $options['clientId'];
-        $this->oauthRefreshToken = $options['refreshToken'];
-    }
+	/**
+	 * OAuth constructor.
+	 *
+	 * @param array $options Associative array containing
+	 *                       `provider`, `userName`, `clientSecret`, `clientId` and `refreshToken` elements
+	 */
+	public function __construct($options)
+	{
+		$this->provider = $options['provider'];
+		$this->oauthUserEmail = $options['userName'];
+		$this->oauthClientSecret = $options['clientSecret'];
+		$this->oauthClientId = $options['clientId'];
+		$this->oauthRefreshToken = $options['refreshToken'];
+	}
 
-    /**
-     * Get a new RefreshToken.
-     *
-     * @return RefreshToken
-     */
-    protected function getGrant()
-    {
-        return new RefreshToken();
-    }
+	/**
+	 * Get a new RefreshToken.
+	 *
+	 * @return RefreshToken
+	 */
+	protected function getGrant()
+	{
+		return new RefreshToken();
+	}
 
-    /**
-     * Get a new AccessToken.
-     *
-     * @return AccessToken
-     */
-    protected function getToken()
-    {
-        return $this->provider->getAccessToken(
-            $this->getGrant(),
-            ['refresh_token' => $this->oauthRefreshToken]
-        );
-    }
+	/**
+	 * Get a new AccessToken.
+	 *
+	 * @return AccessToken
+	 */
+	protected function getToken()
+	{
+		return $this->provider->getAccessToken(
+			$this->getGrant(),
+			['refresh_token' => $this->oauthRefreshToken]
+		);
+	}
 
-    /**
-     * Generate a base64-encoded OAuth token.
-     *
-     * @return string
-     */
-    public function getOauth64()
-    {
-        // Get a new token if it's not available or has expired
-        if (null === $this->oauthToken or $this->oauthToken->hasExpired()) {
-            $this->oauthToken = $this->getToken();
-        }
+	/**
+	 * Generate a base64-encoded OAuth token.
+	 *
+	 * @return string
+	 */
+	public function getOauth64()
+	{
+		// Get a new token if it's not available or has expired
+		if (null === $this->oauthToken or $this->oauthToken->hasExpired()) {
+			$this->oauthToken = $this->getToken();
+		}
 
-        return base64_encode(
-            'user=' .
-            $this->oauthUserEmail .
-            "\001auth=Bearer " .
-            $this->oauthToken .
-            "\001\001"
-        );
-    }
+		return base64_encode(
+			'user=' .
+			$this->oauthUserEmail .
+			"\001auth=Bearer " .
+			$this->oauthToken .
+			"\001\001"
+		);
+	}
 }