This is the Postfix program at host dimebag.donsystem.hu.

I'm sorry to have to inform you that your message could not be
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to <postmaster>

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                        The Postfix program

<keksz@keksz.net>: Host or domain name not found. Name service error for
    name=keksz.net type=A: Host found but no data record of requested type