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Windows Server Forum / Exchange Server / Applications / November 2006

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IMF and the way it generates scores

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Jon@DGS - 03 Nov 2006 18:27 GMT
Hello everyone,

We just recently upgraded to exhange 2003 and we started noticing that some
of the email our applications were sending were being deleted by IMF before
they went out.

After a lot of testing, it seems that the problem was the emails that were
deleted had a very short message and when we added more text to the emails
they seemed to start getting through again (before the messages were getting
scored at 7 and now they get a 3).

This was a surprise to our exchange group that this would have been the
issue.  Has any one else noticed this behaviour in IMF?  That it would use
the message length to score the message so high (adding 4 points in my case)?

Thanks

Jon
Alexander Zammit - 19 Nov 2006 00:28 GMT
Yes filters (like IMF) basing their spam rating on content are less accurate
when the messages is very short.
The reason is that they have little data on which to base their
classification.

cheers,

Alexander Zammit
WinDeveloper Software
IMF Tune - Unleash the Full Intelligent Message Filter Power
http://www.windeveloper.com/imftune/

> Hello everyone,
>
[quoted text clipped - 18 lines]
>
> Jon
 
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