On 3/25/2017 12:45 AM, Scott Kitterman wrote:
For SPF, we had "best guess" [1], which we chose not to standardize at all
because we didn't think it appropriate to break the opt-in nature of SPF.
This concerns me a bit here, but I'm mostly writing to support the idea of
distinguishing between some kind of guess and an actual DMARC result.
I think "dmarc=bestguesspass" is far superior to "dmarc=pass", since this is
not a DMARC pass. I think "dmarcguess=pass" would be better since this isn't
properly a DMARC check at all.
Scott k
I absolutely agree with Scott on this. "bestguesspass" is NOT DMARC. It
is local policy applied in a DMARC like manner.
This is also why there is no legitimate place to send reports. The
sender did not publish a DMARC record and did not ask for reports.
Trying to guess where to send (unasked for) reports is guaranteed to end
with poor outcomes.
Mike
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