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Re: [dmarc-ietf] Ratchets - Disallow PCT 1-99

Laura Atkins <laura@wordtothewise.com> Wed, 21 July 2021 08:28 UTC

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From: Laura Atkins <laura@wordtothewise.com>
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Date: Wed, 21 Jul 2021 09:28:36 +0100
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Subject: Re: [dmarc-ietf] Ratchets - Disallow PCT 1-99
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This is going to cause difficulties in deployment for a lot of companies and domains. Experience tells us that p=quarantine pct=0 detects forwarders and other types systems that modify and break DMARC authentication. These systems are undetectable when p=none is in place. 

I understand and support removing PCT 1 - 99, but think that removing pct=0 will make it even more difficult for companies to deploy DMARC. 

larua 


> On 20 Jul 2021, at 17:39, Dave Crocker <dcrocker@gmail.com> wrote:
> 
> On 7/20/2021 7:54 AM, Barry Leiba wrote:
>> I would like to see us deprecate PCT entirely,
> 
> +1
> 
> d/
> 
> -- 
> Dave Crocker
> dcrocker@gmail.com
> 408.329.0791
> 
> Volunteer, Silicon Valley Chapter
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> American Red Cross
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