--- On Fri, 4/30/10, Dave O'Neill <[email protected]> wrote: > > 7 - invalid MX records > > That's not terribly useful for a sending IP address, as > there's no legitimate reason the sending IP needs to be an > MX of the sender's domain.
I don't think that's what he had in mind, and it certainly isn't the first thing I think of when validating an MX record. Blocking MX records that eventually resolve to localhost or documentation addresses (or don't resolve at all) is what comes to mind first. _______________________________________________ NOTE: If there is a disclaimer or other legal boilerplate in the above message, it is NULL AND VOID. You may ignore it. Visit http://www.mimedefang.org and http://www.roaringpenguin.com MIMEDefang mailing list [email protected] http://lists.roaringpenguin.com/mailman/listinfo/mimedefang

