config.php

<?php return array (
  'db' =>
  array (
    'username' => 'root',
    'password' => 'root',
    'host' => 'localhost',
    'port' => '3306',
    'dbname' => 'shopware',
  ),
    'mail' => array(
        'type' => 'file',
        'path' => dirname(__FILE__).'\tmp_mails',
        'callback' => create_function('$transport', 'return
            "ShopwareMail_".sha1($transport->body) . "_". str_replace("a", "[a]",$transport->recipients).".eml";
        ')
    )
);