>> <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.
Has anyone had a confirmed false positive with zen.spamhaus.org ? - Grant
