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Message History log shows end point as "submitted to Categorizer

Posted on 2008-10-07
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Last Modified: 2013-11-30
I have an issue with some emails with attachments not being delivered. I have made sure there are no restrictions on the AV softwares etc and for information simple emails without attachments go through fine.
Example: 1/2 dozen lines of text with 1MB attachment sent to two users. Email without attachment gets through. After checking mesage logging the log reports as follows:
10/3/2008 7.47 AM SMTP: Message submitted to Advanced Queuing
10/3/2008 7.47 AM SMTP: Started Message Submission to Advanced Queue
10/3/2008 7.47 AM SMTP: Message Submitted To Categorizer
Thats it! - it ends there and doesnt process to Que for routing/Que for local delivery etc etc

Not sure whats happening with the email. Any help would be great.
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Question by:boomerbostock
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Expert Comment

by:boabbruce
ID: 22657539
Have you run the troubleshooting tool?

http://www.microsoft.com/downloads/details.aspx?familyid=4bdc1d6b-de34-4f1c-aeba-fed1256caf9a&displaylang=en

Also turn up  logging on the  categoriser and check the event viewer afterwards.

right click the server in ESM select properties then diagnostic logging tab.
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Accepted Solution

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Exchange_Geek earned 500 total points
ID: 22657604
If its getting stuck in Categorizer - there are three things to blame - permissions, anti-virus exclusions, active directory - dns settings.

What i would recommend to you
1) Check anti-virus exclusions:
http://support.microsoft.com/kb/328841
http://support.microsoft.com/kb/823166
http://support.microsoft.com/kb/245822

2) If possible please stop the AV services and restart SMTP services.
3) Increase diagnostic logging for MSExchangeTransport to 7 through registry.
http://technet.microsoft.com/en-us/library/aa997825(EXCHG.65).aspx

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