On Monday, December 01, 2014 03:56:42 John Levine wrote:
> >So the edge system generates a bounce message (MDN). Knowing that
> >RFC5321.MailFrom will "<>". To be DMARC compliant the RFC5321.HELO/.EHLO
> >name must be align with the RFC5322.From of the MDN.
> Why wouldn't you add a DKIM signature that matches the domain name in
> the message From: line?  The envelope bounce return address is empty,
> but the From: line isn't.

I think there was a missing "To get an SPF result that leads to a DMARC pass 
..." in there.  A DKIM signature will certainly do as well.

Scott K

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