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Forefront for Exchange 2010 & Multi-tenant Exchange environment - Spam not being blocked for one tenant

Posted on 2014-04-04
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Last Modified: 2014-05-18
Hello,

We have a multi-tenant Exchange 2010 environment with Forefront Protection 2010. One specific tenant is getting quite a bit of spam. When checking forefront, it seems that no external mail coming in gets blocked for them, but internal mail does. This tenant is setup via a Windows 2012 Web Application proxy server, where we have another tenant as well. All others are on TMG, but will soon also move to the web proxy server as well.

I am not sure why this specific tenant seems to bypass the spam filter. Any help would be appreciated.

Thank you
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Question by:ntmyflt
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Expert Comment

by:Amit
ID: 39978909
Do you have any other spam filter server or appliance....Forefront, is not that great tool, MS also suggest to use Forefront online protection or 3rd party tool, like message labs or brightmail...
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Author Comment

by:ntmyflt
ID: 39978963
Hello, no we do not have any other spam filter server or appliance, just Forefront. For the most part, Forefront is doing a good job. It just seems to not be working for one specific tenant domain in the Exchange environment.
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Accepted Solution

by:
ntmyflt earned 0 total points
ID: 40061820
It seems the MX record was not correctly setup for this tenant and that's what was causing the issue.
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Author Closing Comment

by:ntmyflt
ID: 40073010
Nobody else suggested the solution, this tenant just wasn't correctly setup.
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