Steve put forth on 7/15/2010 4:16 PM: > * if you feed wrong data to the Anti-Spam filter then the filter will make > errors.
Content (header/body) filters have always been error prone and always will be. The key to success is if the error rate is acceptable. For users to train them, they have to be run in post-queue mode. For performance reasons, most OPs run them in post-queue mode anyway. And by doing this you're unnecessarily eating b/w on your internet link(s). There are plenty of good methods available to drop spam connections at SMTP time without ever having to accept the spam for content analysis. I use many such methods, and I don't use content filters. Never have. I probably spend more time fighting spam than other OPs do. Using content filters such as SA can definitely cut down on mail OP time spent fighting spam. Which method is more effective depends on one's priorities, and thus this subject can be debated ad infinitum. I will say generically that for an OP who has the time, avoiding content filters and using SMTP time blocking methods is probably more effective in the long run and makes more efficient use of network and server resources. YMMV, etc. -- Stan
