John Levine wrote in
 <20250416172847.8886ec4e0...@ary.qy>:
 |It appears that Murray S. Kucherawy  <superu...@gmail.com> said:
 |>-=-=-=-=-=-
 |>
 |>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.
 |
 |We could except that the Resent-xx headers are not trace headers, even \
 |though
 |anything you might say about trace headers applies to them, too.
 |
 |That's why I keep bringing them up.  They're an annoying special case. \
 | Per my
 |previous message, I still can't figure out if anyone cares.  I just \
 |found that
 |the Alpine command to resend a message does something that breaks DKIM \
 |signatures
 |and I doubt that anyone ever noticed before.

I did.
The MUA i maintain generates them for `resend'.
It however also has `Resend' which does not generate them.

--steffen
|
|Der Kragenbaer,                The moon bear,
|der holt sich munter           he cheerfully and one by one
|einen nach dem anderen runter  wa.ks himself off
|(By Robert Gernhardt)

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