On Fri, 7 Nov 2003, Nathan Kondra wrote: > Has any one implemented a spam blacklist? > > I am currently looking into implementing a dns based blacklist from > spamcop.net? > Has any one done it has it worked, has it reduced your spam.
yes, half the traffic nowadays being spam, blacklists are essential on any larger mail servers. the PC term is blocklist, btw. on topic of spamcop, we use it, but it's not the most conservative of them. probability of false positives should be considered. it's also not proactive, a host has to start spamming for real before it will get reported to spamcop and listed. on the other hand it's one of the few lists that an ordinary joe can submit to. (hence also the false positives...) i recommend using some lists that block known relays, proxies and dynamic network ranges and are well-managed and have documented removal procedures, first. some examples: dynablock.easynet.nl proxies.blackholes.easynet.nl list.dsbl.org you can ask for advice, but don't take it blindly. in using any blocklist, you're handing the decision of who can send you mail off to someone elses hands. read every blocklist's homepage you are considering using. read all documentation. decide for yourself if their policies suit you and if you trust them. rgds, netcat _______________________________________________ cobalt-security mailing list [EMAIL PROTECTED] http://list.cobalt.com/mailman/listinfo/cobalt-security
