This doesn't answer your question, but I wanted to mention it as it may help. In the past, I have found a geographic blacklist helps a lot. ie. block all but North America or block a set of countries.
Jonathan On Thu, Mar 4, 2010 at 11:31 AM, Tim Fournet <[email protected]> wrote: > I was wondering if anyone has any well-working SPAM filters based on open > source software that they can recommend? The combination of solutions we've > been using have worked fairly decently until recently, but fighting SPAM is > always a changing war. > > I'm familiar with a lot of the commercial products on the market, but I > want to give Open Source a chance before going 100% commercial. I wouldn't > mind a subscription fee for some sort of signature-based service or > blacklist if there's a good one out there, but I would love to see a good > open source framework to start with. > > _______________________________________________ > General mailing list > [email protected] > http://mail.brlug.net/mailman/listinfo/general_brlug.net > >
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