When sending mail to a domain which should be deliverd to a user (catch-all for user ds2_w3_vincent) the following error occurs. In which direction should I look?
This is the Postfix program at host ds2.tt-hosting.nl.
I'm sorry to have to inform you that your message could not
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
<email@example.com> (expanded from <firstname.lastname@example.org>): mail for
ds2.tt-hosting.nl loops back to myself
Final-Recipient: rfc822; email@example.com
Original-Recipient: rfc822; firstname.lastname@example.org
Diagnostic-Code: X-Postfix; mail for ds2.tt-hosting.nl loops back to myself