Okay, I have implemented DKIM on the postfix mail server, and all of the issues I was reporting have been resolved.
I apologize for denigrating DMARC and am chagrined at my failure to RTFM and implement DKIM. But most of all, a big THANK YOU to Franck and other responders for setting me on the right path. Paul On Apr 26, 2014, at 9:58 PM, Franck Martin <[email protected]> wrote: > Paul, > > To me it seems because your mail server breaks DKIM when forwarding. DMARC > relies on DKIM not getting broken in your scenario. > > Here what I propose you. > 1) open an email account at gmail > 2) open an email account at yahoo > 3) acquire a private domain and get it to relay all mails to the yahoo account > 4) send an email from the gmail account to the private domain > 5) check the authentication results on the email you received at gmail > 6) see that DKIM was broken > 7) fix your mail server until DKIM does not break > > If you tell us what mail server you use to forward, may be we can point you > to some information on how to preserve DKIM. > > How that sounds?
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