In <20031014215749(_dot_)C043A16FC7(_at_)jmason(_dot_)org>
jm(_at_)jmason(_dot_)org (Justin Mason) writes:
I reckon it'll bring us back to the "old days" of BLs -- when they were
much more effective, and spammers much more traceable.
I'm not sure that DNSBLs are that much worse today than they have been
in the past. Granted, criminal DDoS attacks have killed several of
them and caused SPEWS to be relocated from osirusoft. Personally, I
take this as an indication of desperation by spammers and a sign that
DNSBLs *do* work.
Spammer created email worms that turn machines into open proxies has
also caused a flood of new IP addresses, but there was also a time
when new ways of tricking old MTAs into becoming open relays would
also create a flood of new IP addresses to block. The problem with
these new open proxies will most likely have to be solved by the
efforts of ISPs. Still, it appears that the open proxy DNSBLs are
catching the IPs soon after they are used.
-wayne
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