When I use our new Zimbra system to send mail from firstname.lastname@example.org to our original domain, uwalumni.com, I get this response IMMEDIATELY:
This is the mail system at host mail.waastaff.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
Reporting-MTA: dns; mail.waastaff.com
X-Postfix-Sender: rfc822; email@example.com
Arrival-Date: Mon, 14 Jul 2008 16:33:10 -0500 (CDT)
Final-Recipient: rfc822; firstname.lastname@example.org
Diagnostic-Code: X-Postfix; uwalumni.com
This couldn't be more vague. Anyone have any ideas? I've checked every log i can find and can't seem to find anything .