RE: [cobalt-users] Spam Attacker Program wanted

["Dan Kriwitsky" <list1@xxxxxxxxxxxxxxxxxxxx>]

> While DNSBLs are, as Dan says, the most processor-efficient way to
block 
> spam, one very much needs to go in with their eyes open. We're a 
> publishing company specializing in biology and neuroscience and found 
> ourselves blocking one of our own authors from UConn. Why? Well, he
did 
> fieldwork in Costa Rica, and the Costa Rica state telco apparently has
a 
> checkered history on spam. Many lists block its entire netblock, which
in 
> effect locks down all of Costa Rica.
> We continue to use DNSBLs, and I continue to agree with Dan that
rejecting 
> at the MTA level is the best way to go, but beware of the law of 
> unintended consequences.

I believe you can always whitelist in access, or see if the sender can
route through another SMTP. I've had good results with the SpamCop BL
and all my rejection messages point to a web page on my server
explaining the block and offer a contact form to report problems. I
haven't had a single report.
-- 
C2003 Dan Kriwitsky

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