smtpd.php

См. документацию.

<?
$_SERVER['DOCUMENT_ROOT'] = __DIR__;
$_SERVER['DOCUMENT_ROOT'] = mb_substr($_SERVER['DOCUMENT_ROOT'], 0, mb_strlen($_SERVER['DOCUMENT_ROOT']) - mb_strlen("/bitrix/modules/mail"));
 
define('NOT_CHECK_PERMISSIONS', true);
define('BX_BUFFER_USED',false);
define("BX_NO_ACCELERATOR_RESET", true);
 
ob_start(); //This will prevent warning: cannot modify header information
require($_SERVER['DOCUMENT_ROOT'].'/bitrix/modules/main/include/prolog_before.php');
ob_end_clean();
 
if (!CModule::IncludeModule('mail'))
    die('Mail module is not installed');
 
CSMTPServer::Run();
 
require($_SERVER['DOCUMENT_ROOT'].'/bitrix/modules/main/include/epilog_after.php');
?>