[TechLife] could not deliver message time limit specified 4.4.7

We had a problem with email not being delivered to various domains. Here is an example of what the problem was:

Your message did not reach some or all of the intended recipients.

Subject: RE: DBA701 - Urgent
Sent: 4/13/2004 5:39 PM

The following recipient(s) could not be reached:

'test@testdomain.com on 4/15/2004 6:00 PM
Could not deliver the message in the time limit specified. Please retry or contact your administrator.

The problem turned out to be that there were no PTR records set up for the outside IP address. We had to find the problem by doing a search of the PTR records on www.dnsstuff.com using this format
45.123.17.77.in-addr.arpa, the outside address is 77.17.123.45.

http://www.unixhub.com/docs/email/rfc1893.txt

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Posted by TJ to TechLife at 10/02/2006 05:49:00 AM