David F. Skoll wrote:
I'm not saying greet_pause or greylisting are useless... you might as well keep using them to get the low-hanging fruit. But I predict they will become less useful in future.
Greylisting and greet_pause share one characteristic: They apply selection pressure to encourage RFC-compliant behavior in mail sending software.
Both rely on the fact that authors of spam software often cut corners, and both run into problems where authors of general-purpose mail software cut the same corners. The long-term effect will be an ecosystem where nearly all SMTP senders wait for the full SMTP handshake and retry when provided with a temporary rejection. The short-term effect is that we can catch a bunch of spam with these rules until they adapt.
-- Kelson Vibber SpeedGate Communications <www.speed.net> _______________________________________________ NOTE: If there is a disclaimer or other legal boilerplate in the above message, it is NULL AND VOID. You may ignore it. Visit http://www.mimedefang.org and http://www.roaringpenguin.com MIMEDefang mailing list [email protected] http://lists.roaringpenguin.com/mailman/listinfo/mimedefang
