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[dmarc-ietf] Re: Evaluating consensus on the idea of making ARC "Historic"

John Levine <johnl@ietf.email> Wed, 22 July 2026 10:29 UTC

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Date: Wed, 22 Jul 2026 12:29:50 +0200
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From: John Levine <johnl@ietf.email>
To: dmarc@ietf.org
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Subject: [dmarc-ietf] Re: Evaluating consensus on the idea of making ARC "Historic"
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It appears that Laura Atkins  <laura@wordtothewise.com> said:
>I support making it historic. I’m in Vienna this week, but have a bucket of bounce data from clients here a lot of the failures are DMARC
>and forwarding authentication failures. I’ll be looking at that data to see which mailbox providers I know are ARC signing and seeing where
>the mail is still failing. I’ll share that data with the group. 
>
>The other data piece I think will make it clear about the adoption of ARC is related to mailing lists. My impress is that most mailing list
>manager software chose to rewrite the from address rather than sign with arc. 

I wrote the ARC support for the widely used Sympa list manager, and what I've seen is that
lists put on the ARC headers ut the rewrite the address because ARC doesn't work.

R's,
John

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