I have a few clients all who use Exchange 2003 that cannot receive emails from hotmail and other Microsoft mail servers.
The clients can send to Microsoft domains but a reply or new message always fails. The message does not reach the target servers.
From hotmail:
Reporting-MTA: dns;blu139-omc2-s22.blu139.hotmail.com
Received-From-MTA: dns;BLU135-W28
Arrival-Date: Mon, 18 Feb 2008 09:54:10 -0800
Final-Recipient: rfc822;theitmachine@somedomain.org
Action: failed
Status: 5.5.0
Diagnostic-Code: smtp;554 Transaction Failed (1022769381:189:-2147467259)
I have tested the target domain (obviously changed) it passes Reverse DNS and other checks suggested as problems from various tech support sites.
This appears to be a hotmail issue.
Thoughts?