On Tue, Aug 20, 2013 at 05:58:44AM CEST, LuKreme <krem...@kreme.com> said: . > > <http://www.spamhaus.org/zen/> > > zen blocks these categories: > > SBL Direct UBE sources, spam operations & spam services > CSS Direct snowshoe spam sources detected via automation > CBL (3rd party exploits such as proxies, trojans, etc.) > PBL End-user Non-MTA IP addresses set by ISP outbound mail policy > > SBL and CSS are confirmed spammers. CBL are confirmed exploited machines. PBL > are IPs that the IP owner has classified as not allowed to send mail directly. > > Blocking all of those is perfectly safe.
Perfectly safe is the categorizing process is itself perfect. ANd since nothing is perfect, you'll always have false positive.
