Hello, I encountered something similar to your experience some months ago. I'm still not sure exactly what the problem was because the duplicate emails did not start after I made any configuration changes to ASSP or my mail server, but began rather abruptly. On closer inspection, it seemed as though after the initial connection, the two SMTP servers lost contact with one another with the result that the sending SMTP server never gets the reply code indicating a successful receipt. Regardless of the actual cause, the problem went away after I made my changes.
I had several email gateways, all of which routed mail to my single instance of ASSP. I removed all the gateways (and modified my DNS MX entries) except for the main gateway associated with my firewall. This firewall gateway's IP address also has a reverse DNS entry. When I did that, the duplicate emails stopped and previously delayed emails were no longer delayed. (I suspected possible routing changes by my ISP at the time, but I'm not sure how I could have tested it.) Perhaps this will suggest some useful avenues for investigation in your own instance. -- Edmond Inomoto > -----Original Message----- > From: Greybear [mailto:[email protected]] > Sent: Monday, February 15, 2010 8:48 AM > To: For Users of ASSP > Subject: [Assp-user] email arriving multiple times > > Hi all, > > Did anyone face an issue like the following? > 1) sender MTA connects, pushes the email through ASSP to the > mailserver > (Exchange 2k3) > 2) email arrives to the user's mailbox fine. > 3) sender MTA does that repeatedly in a 20-60 minutes > frequency with the > same email - MTA acts like the email was delayed > > Our users are complaining: the same email multiple times, endlessly. > > Tried to reach the postmasters with little luck... > ASSP logs state that the messages were whitelisted and passed through. > Exchange protocol logs state that everything is fine from > EHLO to QUIT. > > Still... these MTAs (I counted 10 out of hundreds) keep > resending their > messages and drive me and my users mad. > > Regards > Greybear > -------------------------------------------------------------- > ---------------- > SOLARIS 10 is the OS for Data Centers - provides features > such as DTrace, > Predictive Self Healing and Award Winning ZFS. Get Solaris 10 NOW > http://p.sf.net/sfu/solaris-dev2dev > _______________________________________________ > Assp-user mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/assp-user > ------------------------------------------------------------------------------ SOLARIS 10 is the OS for Data Centers - provides features such as DTrace, Predictive Self Healing and Award Winning ZFS. Get Solaris 10 NOW http://p.sf.net/sfu/solaris-dev2dev _______________________________________________ Assp-user mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/assp-user
