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Random Undeliverable emails are not received by sender until a reboot SBS 2003

Posted on 2011-02-25
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Last Modified: 2012-08-14
I have an issue with a client NOT receiving RANDOM undeliverable emails. They are using SBS 2003 (Exchange 2003).

On rare occasions, after a reboot, users will receive OLD undeliverable emails that were originally days/weeks/months previously.

I can't reproduce the problem - ie. I send an email to a known bad address and it comes back immediately.

Any suggestions?
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Question by:rheide
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Alan Hardisty earned 500 total points
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You have discovered the affectionately named Greylisting bug.  Please download and install the following patch which will resolve the problem:

http://support.microsoft.com/kb/950757
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by:rheide
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RIGHT ON!!! Thank you. I will install tomorrow and see how it goes. Considering it describes the problem to the T - I'm going to close this question. Thanks so much.
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by:Alan Hardisty
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You should find it solves the problem, but if not - just post again here.

Thanks for the points.

Alan
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