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Posted to users@spamassassin.apache.org by "Dan Mahoney, System Admin" <da...@prime.gushi.org> on 2007/10/10 21:06:25 UTC
A compound bounce/(spf/dk/dkim) rule I'd like to see.
In pseudocode...
IF (message is a recognizable bounce || message is from <>)...
AND (we can guess the domain being sent to (can't trust the "to" header,
but maybe the X-Envelope-To or some MTA token?)
AND the domain being sent TO supports SPF and/or DKIM...(i.e. implying a
misdirected bounce)
Score a compound rule hit.
My logic here is that I would eventually like to compile an rfc-ignorant
list of the senders of such bounces, and aid them in not SENDING such
bounce messages, or at the very least, set up a ruleset in the future to
block bounces from them, based on a low signal/noise ratio.
I am not trying at all to claim that this should be something SCORABLE,
immediately: I don't think SA's detection of legitimate bounce messages
versus illegitmate bounce messages is good enough (please feel free to
tell me differently).
-Dan Mahoney
--
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--------Dan Mahoney--------
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