301 redirect при переносе старых сайтов на MODx

<?php
$uri = $_SERVER['REDIRECT_URL'];
<b>$ref = $_SERVER['HTTP_REFERER'];</b>
$confirmationFields['uri'] = $uri;
$confirmationFields['ref'] = $ref;
$uri.="\n";
$file=fopen("uri.txt", "a");
fwrite ($file, $uri);
fclose($file);
$message = $modx->getChunk('tpl.redirect', $confirmationFields);
$modx->getService('mail', 'mail.modPHPMailer');
$modx->mail->set(modMail::MAIL_BODY,$message);
$modx->mail->set(modMail::MAIL_FROM,'me@example.org');
$modx->mail->set(modMail::MAIL_FROM_NAME,'Сайт name.ru');
$modx->mail->set(modMail::MAIL_SUBJECT,'неправильный адрес');
$modx->mail->address('to','mail@mail.ru');
$modx->mail->setHTML(true);
if (!$modx->mail->send()) {
    $modx->log(modX::LOG_LEVEL_ERROR,'An error occurred while trying to send the email: '.$modx->mail->mailer->ErrorInfo);
}

$modx->mail->reset();