On Tue, Apr 15, 2025 at 12:22 PM Bron Gondwana <brong= 40fastmailteam....@dmarc.ietf.org> wrote:
> Honestly, with the capacity to undo header changes from > dkim2-modification-algebra I would be more inclined to have the spec list > headers which MUST NOT be signed (probably just trace headers), and to list > additional headers to not sign, rather than additional headers to sign. > If it helps, EMAILCORE is adding a "Trace" boolean column to the Permanent Header Fields registry. We could key off of that. -MSK
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