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

John R Levine <johnl@taugh.com> Sun, 16 August 2020 18:16 UTC

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Date: Sun, 16 Aug 2020 14:16:50 -0400
Message-ID: <b5935bde-e8-78ef-ed17-90a1d730aa9d@taugh.com>
From: John R Levine <johnl@taugh.com>
To: Alessandro Vesely <vesely@tana.it>
Cc: IETF DMARC WG <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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On Sun, 16 Aug 2020, Alessandro Vesely wrote:
>>>> If I put my gmail address into the from field, there is no pretending, no 
>>>> matter what platform I am using.
>>> 
>>> That conflicts with the coarse-grained authentication strategy, 
>>> established at the FTC Email Authentication Summit in November
>>> 2004, as Doug^W Michael recalled. >
>> 1. I was making a semantic point, not a technical or technical policy one.
>
> They have to match at some point.

Sorry, that's just wrong.  There's no technical reason a mail message 
can't have any identifiers the sender wants.

>> 2. There was nothing 'established' at that event.  There were interesting 
>> discussions, but that's all.
>
> I wasn't there.  Can't it be considered the historic event that marked 
> domain-level authentication as the promising strategy to counter email abuse?

No, it was just some political theatre.  We were already working on SPF 
and DKIM.

> DMARC took that strategy to the extremes.  A number of users and operators 
> seem to have accepted it.  Why cannot we accept it too?

Please review the previous bazillion messages on this topic.

Regards,
John Levine, johnl@taugh.com, Taughannock Networks, Trumansburg NY
Please consider the environment before reading this e-mail. https://jl.ly

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