> but would that not mean that the bayes filter will learn the > headers that spam assassin adds as spam .. and then after a > while only start classing mail that already has the spam > headers as bayes_99 ?
You can set bayes to ignore certain header. See the documentation for more info. I would think it does not learn X-Spam-* headers by default. Also, I would try to add other spam-related headers as well, as those can only be abused by spammers IMHO. Kind Regards, Sander Holthaus