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Re: [dmarc-ietf] third party authorization, not, was non-mailing list

"Murray S. Kucherawy" <superuser@gmail.com> Mon, 24 August 2020 15:13 UTC

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From: "Murray S. Kucherawy" <superuser@gmail.com>
Date: Mon, 24 Aug 2020 08:13:20 -0700
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To: Dotzero <dotzero@gmail.com>
Cc: Jesse Thompson <jesse.thompson=40wisc.edu@dmarc.ietf.org>, "dmarc@ietf.org" <dmarc@ietf.org>
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Subject: Re: [dmarc-ietf] third party authorization, not, was non-mailing list
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On Thu, Aug 20, 2020 at 4:56 PM Dotzero <dotzero@gmail.com> wrote:

> This is why I proposed a tag that would have a value consisting of the
> authorized intermediary domain. It would only be valid for that message.
> Because the tag is signed separately from the rest of the message, it
> should survive even if the intermediary modifies other parts of the
> message. If the intermediary DKIM signs the modified message with their own
> signature, that provides some assurance to the receiver.


You mean like https://tools.ietf.org/html/draft-levine-dkim-conditional-00?

I'm pretty sure that got implemented too, but I can't recall now if it ever
shipped.

-MSK

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