If you host not prepared for sending mails (e.g. sendmail), you can add the [optional] mail configuration.
Path: /etc/fruithost/.mail.php
<?php
define('MAIL_EXTERNAL', true);
define('MAIL_HOSTNAME', <hostname>);
define('MAIL_PORT', 25);
define('MAIL_USERNAME', <username>); // Mostly your E-Mail Address
define('MAIL_PASSWORD', <Password>);
?>