Re: [dmarc-ietf] Ticket #39 - remove p=quarantine

Michael Thomas <mike@mtcc.com> Thu, 10 December 2020 01:23 UTC

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From: Michael Thomas <mike@mtcc.com>
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Date: Wed, 9 Dec 2020 17:23:10 -0800
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Subject: Re: [dmarc-ietf] Ticket #39 - remove p=quarantine
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On 12/9/20 4:04 PM, Brandon Long wrote:
>
>
> When you switch to p=quarantine pct=0, no one should apply quarantine 
> (so it's equivalent to p=none), but Groups will start rewriting, 
> thereby removing all of those failures from your reports.  Yes, you 
> won't see those messages in the reports at all anymore because they 
> are no longer using your domain.

Is that what's going on with some of the messages I see on this list? 
That seems pretty awful from a security standpoint. Basically you're 
engineering a lookalike From address attack. The one big disappointment 
from my standpoint is that MUA's don't seem to be using auth-res, etc, 
to do some basic annotation. At least Thunderbird. And I don't recall 
gmail doing anything either.

Mike