Sun Nov 26 21:23:29 UTC 2006
> These days, a great deal of spam seems to be coming from networks of > compromised Windows desktop computers. These can be located anywhere in the > world. Is there a DNS RBL that's specialized for these spam sources? there are quite a few. there's the MAPS QIL (now a property of trendmicro), the SpamHaus XBL, the Blitzed OPM, and at least one list at SORBS. all of these specialize in bot-infected transient spam sources. > We receive legitimate e-mail from all over the world, so I can't use RBLs > that list entire countries or that indiscriminately list /24 networks > containing both clients and servers. if you can't tolerate false positives, then you're not a candidate for DNSBL subscription. for my own networks, i'm ready to simply firewall off TCP/25 altogether, and so any legit e-mail i still receive after subscribing to the nastiest DNSBL's i can find is a pure bonus for me.
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