Relaying temporarily denied. Cannot resolve ptr record (Full Version)

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Guest -> Relaying temporarily denied. Cannot resolve ptr record (14.Aug.2002 4:56:00 PM)

Please help, I have several users that are getting the message....Your message

To: user@destination.com
Subject: TEST
Sent: 8/13/02 12:32:10 PM

is still queued at the Internet Mail Service (PREX01). This message will continue to be retried until the configured maximum timeout period,and if delivery cannot be completed by then, your message will be returned to you....
I have looked in the message queue on my exchange server and for these destination hosts, the error message is... (Relaying temporarily denied. Cannot resolve ptr record for -MY FIREWALLS IP ADDRESS-. We use AT&T for our T1 connection. Anyone know what is going on? Thanks
Mark0




Lorna -> RE: Relaying temporarily denied. Cannot resolve ptr record (14.Aug.2002 7:14:00 PM)

The receiving server is trying to do a reverse DNS lookup so it can verify the sending server but your firewall isn't providing the IP to name resolution. That's the cause but I don't know what the solution would be.

Good luck.
Lorna




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