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Re: [dmarc-ietf] ARC-Seal is meaningless security theatre

"Murray S. Kucherawy" <superuser@gmail.com> Thu, 17 August 2017 05:28 UTC

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From: "Murray S. Kucherawy" <superuser@gmail.com>
Date: Wed, 16 Aug 2017 22:28:10 -0700
Message-ID: <CAL0qLwaqZW4PjaruXKb6qVWW0NT6KBw9TAFj-71CMyVkjVhV8A@mail.gmail.com>
To: Bron Gondwana <brong@fastmailteam.com>
Cc: "dmarc@ietf.org" <dmarc@ietf.org>
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Subject: Re: [dmarc-ietf] ARC-Seal is meaningless security theatre
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On Wed, Aug 16, 2017 at 5:47 PM, Bron Gondwana <brong@fastmailteam.com>
wrote:

> While there exists A SINGLE SITE which is ARC-unaware and DMARC p=reject
> aware, you can't use ARC on a DMARC p=reject domain without rewriting the
> sender.  Otherwise that site will bounce the email.
>
>
Goodness, it's a wonder that we've ever successfully deployed anything
incremental around here.  ;-)

-MSK

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