Thanks for all who answered. Changing the "official hostname" of the primary domain to match solved the problem... So apparently they required the HELO hostname to match exactly.
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of R. Scott Perry Sent: Tuesday, July 06, 2004 1:05 PM To: [EMAIL PROTECTED] Subject: Re: [IMail Forum] Mail getting rejected to One user... >The message was very clear. Quit guessing. No, it was not clear. It did not include the IP address of the mailserver, so if any IP was used other than our best guess, we have to jump through hoops to figure out the problem. The IP that they use to send to the IMail mailserver has a perfect reverse DNS entry (all DNS servers have PTR records pointing to the same hostname, which has an A record that all the DNS servers agree points back to the same IP). So the ball is in the court of the people generating that poor error message. >The PTR hostname either > >1) was not found or > >2) was found, but had no matching A record. Not so. >Forget about HELO hostname or SMTP greeting hostname or virtual Imail >domains when trying the fix this error, which could be a DNS failure on >their end, not yours, as Sandy said. Len, I'll agree that the message was very misleading. But the problem is almost certainly the HELO. I've tried from two separate IPs that have perfect reverse DNS entries set up, and from one it worked, but not the other. The only difference I can see is that the HELO was the same for both, yet it was related to one IP but not the other. So I'm guessing they are doing an A record lookup of the HELO and seeing how close it is to the IP, or some other oddball ("crazy anti-spam test") stuff. -Scott --- Declude JunkMail: The advanced anti-spam solution for IMail mailservers since 2000. Declude Virus: Ultra reliable virus detection and the leader in mailserver vulnerability detection. Find out what you've been missing: Ask for a free 30-day evaluation. --- [This E-mail was scanned for viruses by Declude Virus (http://www.declude.com)] To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/ To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
