SMTP: Advanced Queue Failed to Deliver Message

universalmac
universalmac used Ask the Experts™
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No e-mail in or out of the exchange small business server 2003.  Tracking the messages shows "SMTP: Advanced Queue Failed to Deliver Message".

Furthermore, attemping to open messages from OWA that have been sent produces the following error:

HTTP/1.1 500 Internal Server Error

Any help appreciated.
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Commented:
Is the information store mounted?
Check in Exchange System Manager > Administrative Groups > first administrative group > servers > yourserver

are there any errors in the event logs?
Alright, I managed to figure it out.  There was GFI mail security installed, and even though we didn't use it's virus scanning engine there was some licensing dispute with gfi and there antivirus vendor which caused mailflow to stop - even for people not using the service.

Here's the knowledgebase from GFI on the issue:

http://kbase.gfi.com/showarticle.asp?id=KBID003557&adv=937&loc=47
http://kbase.gfi.com/showarticle.asp?id=KBID003263

Thanks for the help!

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