$request_mdn, $request_dr, $default_charset, $useSendmail,
$domain, $action, $default_move_to_sent, $move_to_sent,
$imapServerAddress, $imapPort, $sent_folder, $key;
$request_mdn, $request_dr, $default_charset, $useSendmail,
$domain, $action, $default_move_to_sent, $move_to_sent,
$imapServerAddress, $imapPort, $sent_folder, $key;