Hi Folks,

I'm sure at least some of you have been bitten by the debacle associated with Yahoo turning on strict DMARC enforcement (particularly any of you who, like me, manage a list server).

Which leads to a question: Any suggestions for how to validate a DKIM signature, and apply an Original-Authentication-Results header, at the MTA level (specifically Postfix)? (And/or, any operational experience that this is a viable way to address the problem.)

Thanks very much,

Miles Fidelman

--
In theory, there is no difference between theory and practice.
In practice, there is.   .... Yogi Berra

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