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Re: [dbound] [dmarc-ietf] Fwd: New Version Notification for draft-dcrocker-dns-perimeter-00.txt

"John R. Levine" <johnl@iecc.com> Thu, 04 April 2019 01:00 UTC

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Date: Wed, 03 Apr 2019 21:00:46 -0400
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From: "John R. Levine" <johnl@iecc.com>
To: dcrocker@bbiw.net
Cc: tjw ietf <tjw.ietf@gmail.com>, dbound@ietf.org
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Subject: Re: [dbound] [dmarc-ietf] Fwd: New Version Notification for draft-dcrocker-dns-perimeter-00.txt
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On Wed, 3 Apr 2019, Dave Crocker wrote:
> On 4/3/2019 12:19 PM, tjw ietf wrote:
>>  I was going to say CAA but that’s 6 years old.
> 5 was a random number.  I was merely meaning 'recent'.
>
> But suggesting CAA in response to my query means that you think RFC 6844 has 
> received widespread -- ie, at scale -- end to end adoption and use.

Every CA is supposed to check CAA records before issuing a cert to see if 
they're allowed to issue it.  I know Let's Encrypt does and I suppose I 
can ask them how many CAA records they see.

> Please forgive my skepticism.

Well, OK, here's a question for you: when's the last time an RFC added a 
feature to the DNS that puts records in the additional section triggered 
by a specific label in the query?  I'm reasonably sure the answer is 
"never" but you might ask dnsop to be sure.

Regards,
John Levine, johnl@iecc.com, Primary Perpetrator of "The Internet for Dummies",
Please consider the environment before reading this e-mail. https://jl.ly

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