On 4/1/25 7:46 PM, Wei Chuang wrote:


On Mon, Mar 31, 2025 at 12:32 PM John Levine <jo...@taugh.com> wrote:

    It appears that Wei Chuang  <wei...@google.com> said:
    >To sign a message, the signer must find the maximum instance tag
    "i=n",
    >denoted as M.  To add a new DKIM2-Signature, first verify that
    there isn't
    >any to be defined in the future indication that the message
    "left" DKIM2. ...

    I have a few questions that might greatly simplify the process.

    Most (all?) non-trace headers are defined to occur only once, like
    From: and Subject:


I think this could work also and agree it would shorten the list of header fields that have to be oversigned.

No, this is a useless optimization that nobody cares about. Show the community that cares. A community that actually matters.

Mike
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