Re: [dmarc-ietf] Spirit of RFC8601 section 5 for invalid A-R headers

"Kurt Andersen (b)" <kboth@drkurt.com> Fri, 03 April 2020 20:19 UTC

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From: "Kurt Andersen (b)" <kboth@drkurt.com>
Date: Fri, 3 Apr 2020 13:18:52 -0700
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To: John Levine <johnl@taugh.com>
Cc: "dmarc@ietf.org" <dmarc@ietf.org>, Brandon Long <blong@google.com>
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Subject: Re: [dmarc-ietf] Spirit of RFC8601 section 5 for invalid A-R headers
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On Fri, Apr 3, 2020 at 1:09 PM John Levine <johnl@taugh.com> wrote:

> In article <
> CABa8R6sbHLfkzHD4gaPBxQbgNy57J1eLXt2sPyAfaTYAY3tG-Q@mail.gmail.com> you
> write:
> >In practice, I don't know how common it is for clients to consume this
> >header.
>
> They have to if they're adding ARC seals on the way out.
>

Only if the ADMD's particular implementation to pass through the
information from incoming perimeter system to outgoing perimeter system
happens to utilize the A-R header(s) for the purpose of conveying that
information.

--Kurt