worm emails marked as possible spam

[IT Dept]

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Hi Everyone,

I'm getting tons of complaints from my users that are complaining about 
the amount of "spam" they're getting over the past week or so. These are 
messages with subjects such as "hi, ive a new mail address" and so 
forth. Obviously, it's not really spam, but the result of one of the 
Sober worm variants. But the problem is that although SOME of the 
messages get tagged as high spam, and therefore the users aren't 
notified...many of the messages don't score high enough for that, so get 
tagged as possible spam and the user's inbox gets bigger...some users 
are apparently getting hundreds of these a day.

How do I block these damned things, or at least not have the system 
notify my users about them?

Thanks,
Chris

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