Following a session with Symantec attempting to troubleshoot an exchange agent, we now find that we are unable to send email externally.
The NDR is as follows:
Delivery has failed to these recipients or distribution lists:
Your message wasn't delivered because of security policies. Microsoft Exchange will not try to redeliver this message for you. Please provide the following diagnostic text to your system administrator.
The following organization rejected your message: ourdomain.com.
Sent by Microsoft Exchange Server 2007
Diagnostic information for administrators:
Generating server: exchangeBOX.ourdomain.local
smtp.ourdomain.com #550 5.7.1 Unable to relay for email@example.com ##
Original message headers:
Received: from exchangeBOX.ourdomain.local ([ip_01]) by exchangeBOX ([IP_01]) with
mapi; Thu, 7 May 2009 22:53:24 +1200
From: removed <firstname.lastname@example.org>
To: "email@example.com" <firstname.lastname@example.org>
Date: Thu, 7 May 2009 22:53:23 +1200
Accept-Language: en-US, en-NZ
acceptlanguage: en-US, en-NZ
I have attempted backtracking some of the tasks performed during the Symantec call, but to no avail.
The exchange server is on a Server 2008 64bit platform, and was working fine until today.
I have tried adding an additional smtp connector for the server range, but that had no effect. Nothing I do appears to have an effect and I am stumped.