Hi Yves-Marie, My guess, and it's just a guess, is that the discrepancy might be down to the "alignment" of the SPF and DKIM records.
DMARC requires that the domain of the SPF approved email source in the envelope header (return-path) matches the domain in the From address. It also requires that DKIM selector domain matches that of the From address domain. However, in the absence of DMARC, SPF and DKIM are not bound to the From address domain in any way. You can protect an email with SPF and DKIM using any domain name(s) and it will still validate. So, I suspect that Google Postmaster may be reporting correctly validating SPF and DKIM authentication but also indicating that not all of that is aligned, i.e. not compliant with your DMARC policy. The easiest thing to do is look at the DMARC failure email reports and see what they are saying. Ken. -- Ken O'Driscoll / We Monitor Email t: +353 1 254 9400 | w: www.wemonitoremail.com Need to understand deliverability? Now there's a book: www.wemonitoremail.com/book On Tue, 2017-08-01 at 09:54 +0200, Yves-Marie Le Pors Chauvel wrote: > Hi there, > > Since a few weeks from now, I'm having some results I don't really > understand with Google Postmaster Tools. > > When I take a look at the Authentification page, my SPF and DKIM > compliancy are always 100% but my DMARC compliancy is variation from day > to day (from 5.9% to 77.3%) without changing anything on my side. > > If I check on Dmarcian, for Google reports, I have a compliance level of > 100%... > > Does any one have any idea where it should come from ? > > Regads, > > -- > Yves-Marie LE PORS-CHAUVEL Email Product Manager > T: +33 2 23 45 57 99 (3043) 3 rue de Paris - Atalis 2 / Batiment D > - 35 510 Cesson Sévigné > www.ccmbenchmark.com > _______________________________________________ > mailop mailing list > mailop@mailop.org > https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop _______________________________________________ mailop mailing list mailop@mailop.org https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
