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Exchange Non-Delivery Messages

I'm running Exchange on a Windows 2003 server.  What would cause non-delivery receipts to be delivered up to two months from when the original email was sent?

I've paid a tech to investigate the problem and he can find nothing wrong.
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nplanek
Asked:
nplanek
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1 Solution
 
Alan HardistyCo-OwnerCommented:
The lack of installing the following patch would be the cause:

http://support.microsoft.com/kb/950757/

Known as the greylisting bug, it will cause mails to appear suddenly after the Information Store service is restarted or the server is rebooted.

Install the patch and the problem will go away.

Alan
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nplanekAuthor Commented:
Thanks for the quick response and knowing your stuff!
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Alan HardistyCo-OwnerCommented:
You are welcome.  It is one that crops up from time to time, so have come across it before.

Glad it has solved the issue for you.

Best wishes

Alan
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