Re: [dmarc-ietf] Doing a tree walk rather than PSL lookup

Jesse Thompson <jesse.thompson@wisc.edu> Mon, 23 November 2020 21:04 UTC

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From: Jesse Thompson <jesse.thompson@wisc.edu>
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Date: Mon, 23 Nov 2020 15:04:06 -0600
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Archived-At: <https://mailarchive.ietf.org/arch/msg/dmarc/Anm2aQ23FYwRJ_M2EHbxzZqmq7M>
Subject: Re: [dmarc-ietf] Doing a tree walk rather than PSL lookup
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On 11/23/20 1:00 PM, Dave Crocker wrote:
> On 11/23/2020 10:50 AM, Jesse Thompson wrote:
>> Would it help if there was a new DMARC policy tag to trigger the tree walk?
> 
> 
> policy tags are useful when one has a dmarc record that might contain it.  the challenge here is to find that record.

I meant to suggest that the requirement for a tree walk would be that the Organizational Domain would need to have that in its policy.  It seems like a decent compromise for the people worried about unnecessary DNS lookup overhead.

Jesse