Jeff Rife wrote:
The first isn't possible due to the fact that domains cost basically nothing to buy. A bad guy can have 50 domains waiting in the wings, and send SPF-accurate SPAM from each one until they start getting caught by rules like you say. Then, they move on to the next domain. Multiply that by thousands of bad guys, and life sucks.
Check out www.surbl.org. They're actually quite effective at catching spam based on domain names - in this case of the websites being spamvertized - despite the turnover potential.
-- Kelson Vibber SpeedGate Communications <www.speed.net>
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