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Re: [dmarc-ietf] Call for Adoption: DMARC Use of the RFC5322.Sender Header Field

John Levine <johnl@taugh.com> Sun, 27 September 2020 17:16 UTC

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From: John Levine <johnl@taugh.com>
To: dmarc@ietf.org
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Subject: Re: [dmarc-ietf] Call for Adoption: DMARC Use of the RFC5322.Sender Header Field
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In article <4004580.HQKp4RnRq6@zini-1880> you write:
>I don't think this his helpful.  If something like this is going to be 
>standardized, it shouldn't be called DMARC because it's not.

We (the generic we) seem to have a fundamendal disconnect about what
DMARC is for.

One group appears to believe it's about what users see in their inbox,
to ensure that the address on the From: line matches the actual
author.

The other group appears to believe it's a filtering signal that mail
systems mix into the filtering process they apply between the time the
mail arrives at the MX and the time the users sees it.

I suppose both are right to some extent, but they have very different
implications for the design.

R's,
John

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