> Tony Finch wrote: >>Yes, this is why you have to be careful about the nameservers that are >>blacklisted. They must be controlled by spammers rather than merely used >>by spammers, which is why the SBL is an appropriate blacklist for this >>purpose.
On Monday, March 29, 2004, 10:41:39 AM, Marc Perkel wrote: > I agree - but if you were using your own Bayes to do the scoring then - > hopefully - nameservers that were split spam/nonspam wouldn't affect the > score where the ones that were all spam would But doesn't that assume (perhaps prejudicially) that an SA can see *every* domain that a name server serves? What if there were a name server whose domains only appeared in spams as far as a particular SA could see, but which in fact served up many more legitimate domains that *seldom appeared in spam*? Those legitimate domains would be blocked by this approach of blacklisting name servers. I find that potentially somewhat unfair. Jeff C. -- Jeff Chan mailto:[EMAIL PROTECTED] http://sc.surbl.org/
