I keep getting this, i know how i screwed up but i dont know how to fix it. When i followed the ispconfig guide i forgot to run and edit /etc/hosts
echo server1.example.com > /etc/hostname
I did it now but it still doesnt work
Mail Delivery System <MAILER-DAEMON@techreanimate.com>
2:37 PM (32 minutes ago)
This is the mail system at host techreanimate.com.
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 mail system
<email@example.com>: unknown user: "luis"
Final-Recipient: rfc822; firstname.lastname@example.org
Diagnostic-Code: X-Postfix; unknown user: "luis"
---------- Forwarded message ----------
From: Luis Rodriguez <email@example.com>
To: Luis Rodriguez <firstname.lastname@example.org>
Date: Sat, 22 Jun 2013 14:37:20 -0400