[dmarc-ietf] Re: I-D Action: draft-ietf-dmarc-arc-to-historic-00.txt

["Murray S. Kucherawy" <[e-mail]>]

On Wed, Apr 22, 2026 at 10:57 AM <[e-mail]> wrote:

> Internet-Draft draft-ietf-dmarc-arc-to-historic-00.txt is now available.
> It is
> a work item of the Domain-based Message Authentication, Reporting &
> Conformance (DMARC) WG of the IETF.
>
>    Title:   Reclassifying ARC as Historic
>    Authors: J. Trent Adams
>             John Levine
>    Name:    draft-ietf-dmarc-arc-to-historic-00.txt
>    Pages:   9
>    Dates:   2026-04-22
>
> Abstract:
>
>    This document calls for a conclusion to the experiment defined by
>    “The Authenticated Received Chain (ARC) Protocol” [RFC8617], and
>    recommends that ARC no longer be deployed or relied upon between
>    disparate senders and receivers.  The document summarizes what ARC
>    set out to do, reports on operational experience, and explains how
>    the experience gained during the experiment is being incorporated
>    into the proposed DKIM2 work as the successor to DomainKeys
>    Identified Mail [RFC6376].  To avoid any future confusion, it is
>    therefore requested that ARC [RFC8617] be reclassified as “Historic”.
>

Just to claim the first bit of feedback about this:

The IANA Considerations section says there are no actions, but I suggest we
consider marking as "deprecated" all of the "arc" items visible in the
Email Authentication Parameters registry (
https://www.iana.org/assignments/email-auth/email-auth.xhtml)

-MSK