Re: [dmarc-ietf] ARC questions

John R Levine <johnl@taugh.com> Mon, 23 November 2020 22:58 UTC

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Date: 23 Nov 2020 17:58:37 -0500
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From: "John R Levine" <johnl@taugh.com>
To: "Dave Crocker" <dcrocker@gmail.com>, dmarc@ietf.org
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Subject: Re: [dmarc-ietf] ARC questions
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>> I believe that Brandon has specifically said that Gmail sees this problem 
>> and that is why whitelisting mail from mailing lists isn't adequate. 
>
> And that constitute "meaningfully document[ing]"?

Works for me.  I doubt I was the only person wondering why it needed all 
that mechanism when whitelisting mailing lists got you most of the way 
there, particularly since you need that whitelist anyway to know when to 
start ARC analysis.

> And, again, when ARC work was pursued, I don't recall anyone claiming that 
> mailing lists were (significant) sources of misbehavior.

Well, OK.  Please feel free to provide footnoted documentation of what 
the actual motivation for ARC was if you believe it was something else.

R's,
John