I want to thank those who pointed out to me the shortcomings of
challenge-response, without getting into a debate about it, which was not
my intention.
I am working to replace my current challenge-response system with a
procmail-powered whitelist scheme without challenges. This will require
daily review of a log of mails from non-whitelisted addresses, and the
temptation is to blacklist the sender address of every message identified
positively as spam. But since some spam contains forged sender addresses,
this might blacklist some "innocent" people's addresses. Of course, it is
not likely that one of these would initiate an email correspondence with
me.
I would appreciate advice on this, either on or off-list.
--
Regards,
Lloyd
(1st email to me should contain "Standish" in message subject or body.)
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