On Monday 10 November 2003 02:27 pm, Praedor Atrebates wrote: > OK, this really irritates me. I have the latest spamassassin. It is > running in daemon mode. I have procmail setup to /dev/null anything that > is identified as spam. I have trained the Bayesian filter (supposedly) to > identify certain messages as spam...BUT THEY KEEP GETTING THROUGH!
You are relying too much on pure filtering checks. Spammers run their messages against SA in order to figure out what types of changes can make it past the stock filters. I rely much more heavily on DNSBL checks, and filter out messages from known spam sources, open relays, open proxies, etc. As a result, I get much less spam passing by my SA filters. As of one week from yesterday, I have ~2000 messages, about 1600 of those are spam and only 1 was a false negative that managed to squeak past the filter. Only 4 false positives and those were trivial matches from the mailing list where someone is sending through a known open relay. Beef up your DNSBL scores and I guarantee that the number that squeak by will drop. -- Bryan Phinney Software Test Engineer
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