Re: [DNSOP] Tell me about tree walks

Tony Finch <dot@dotat.at> Wed, 11 November 2020 22:38 UTC

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Date: Wed, 11 Nov 2020 22:38:12 +0000
From: Tony Finch <dot@dotat.at>
To: Paul Vixie <paul@redbarn.org>
cc: John Levine <johnl@taugh.com>, dnsop@ietf.org
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Subject: Re: [DNSOP] Tell me about tree walks
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Paul Vixie <paul@redbarn.org> wrote:
>
> i'd like to be able to filter inbound traffic based on who paid the
> money for a domain, who got that money, or whether either of them
> wishes to remain anonymous.

The crucial difference is that CAA/DMARC are consensual: the publisher and
the checker both want to use the protocol to stop baddies doing bad
things. But your situation is more adversarial: you (the checker) want to
find out if the publisher is good or bad. There's not much chance of
success trying to use a protocol designed for friendlies in situations of
distrust, let alone active combat!

Tony.
-- 
f.anthony.n.finch  <dot@dotat.at>  http://dotat.at/
Southeast Iceland: Variable 4, becoming southeasterly 5 or 6, increasing 7 to
severe gale 9 later. Rough, occasionally very rough later. Showers, rain
later. Good, occasionally poor.