anti-spam software

[Maria Iano <iano () MATH UMD EDU>]

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I am hoping to pick your brains about commercial anti-spam solutions.

The Math Department has roughly 1000 user accounts and currently uses
SpamAssassin, as well as many of the spam filtering options in
postfix such as header and body checks and DNS blacklists. Our users
mark messages as spam and we feed them to the Bayesian database for
SpamAssassin. Nonetheless, a lot of spam still gets through. So we
are looking into commercial anti-spam software. Has anyone else gone
the route of purchasing a commercial solution? If so, how did it work
out for you? Has anyone else compiled a review of the different
choices and how they compare? If so, I would love to see it. If you
know of any commercial anti-spam providers that offer deep education
discounts that would be good to know also.

Thanks for any help you can give.

Maria Iano
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iano () math umd edu
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