On Sunday June 19 2005 9:32 am, martin f krafft wrote: > also sprach Paul Johnson <baloo@ursine.ca> [2005.06.19.1544 +0200]: > > So punish them specifically. There are blackholes that do that. > > bl.spamcop.net, sbl.spamhaus.org, xbl.spamhaus.org and > > bl.ursine.ca all do that. > > And then they just hang up and dial in again to get a new IP. Greylisting gives you an hour or so for IPs to get blacklisted by sites that just blindly accept everything on the first try. They're taking a hit for the team so you don't have to if you combine it with greylisting. > > You need to take into account false positives as well when you're > > thinking about effectiveness. If false positives are greater > > than zero, effectiveness is near-zero. > > You need to make assumptions, and mine are that people send mail > according to the accepted infrastructure, which is to use > smarthosts. OK, fine, but don't expect to get much mail as people start realizing they can do it better than their ISP can. -- Paul Johnson Email and Instant Messenger (Jabber): baloo@ursine.ca http://ursine.ca/~baloo/
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