If I say 'allow PTR', then it does check both the PTR and the
A to make sure there's a valid match, correct?
IE an evil spammer wants to send email as @example.com ip
addr 102.259.10.10, a network he controls, and sets up a
PTR listing that as 'blah.example.com'. However the actual
example.com owners don't have an A record for blah.example.com
that resolves to 102.259.10.10.
Said spammer's mail will fail, correct?
--
Brian Hatch Why isn't there
Systems and mouse-flavored
Security Engineer cat food?
http://www.ifokr.org/bri/
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