2008-04-14 04:56:52 by
Greg Reemler in
The Complex Event Processing Blog
...antispam filtering
Over time, however, the spammers get more clever and they find many ways to poke holes in rule-based detection approaches. They learn to write with spaces between the letters in the words, they change the subject and message text frequently, they randomize their originating IP addresses, they use IP addresses of your best...