Hi, On 03.11.2026 14:21, MCN-IETF wrote:
A DNS-published policy would have the advantage of being controlled by the domain owner, rather than depending on each sending application or service to include the appropriate restriction in every message.
This has the danger of introducing yet another flag that is practically meaningless because everyone will set it to "don't modify" which is in turn very often overridden by operational concerns, assessor's local policies.
So the question is, what's the value of such a policy being set, what does it actually communicate to the assessor when no modifications were made?
What does it communicate to assessors running or behind infrastructure that will make modifications (Microsoft "Safelinks", SendGrid URL tracking, etc)?
If answer to both of those is "nothing much really" then there isn't a good reason to spend effort here.
(Resending because I think I didn't send it to the list before) Best, Taavi
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