Add option to use envelope From address for MDN responses (#1488880)

Aleksander Machniak

2013-01-02 232535f76e50c08e77d8cba599fabe7fe8ca42d4

 program/lib/Roundcube/rcube_smtp.php

@@ -227,7 +227,8 @@
        }

        // RFC2298.3: remove envelope sender address
        if (preg_match('/Content-Type: multipart\/report/', $text_headers)
        if (empty($opts['mdn_use_from'])
            && preg_match('/Content-Type: multipart\/report/', $text_headers)
            && preg_match('/report-type=disposition-notification/', $text_headers)
        ) {
            $from = '';