if (\preg_match('/Original-Recipient: rfc822;(.*)/i', $dsn_report, $match)) {
        $email = \trim($match[1], "<> \t\r\n\0\x0B");
        /** @noinspection PhpUsageOfSilenceOperatorInspection */
        $email_arr = @\imap_rfc822_parse_adrlist($email, 'default.domain.name');
        if (isset($email_arr[0]->host) && $email_arr[0]->host != '.SYNTAX-ERROR.' && $email_arr[0]->host != 'default.domain.name') {