On Jul 26, 2012, at 2:00 PM, Eric Smith <es(_at_)fruitcom(_dot_)com> wrote:
So my idea is that when the domains in the From/From_ do not
match the domains in the Received, then this is a good scoring
mechanism for spam.
SpamAssassin has had rules for doing this for years. You might attempt to
duplicate some of its logic. Of course it has perl data stuctures to link
chains of receipt, etc., so it might be pretty difficult to do in procmail.
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