DKIM2

[juliebin]

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Note

Low Risk
Documentation-only change with no application or config code; main caveat is operators following draft-spec guidance that may still change.

Overview
Adds a new Momentum 4 operator guide at /momentum/4/dkim2 for DKIM2 (draft ietf-dkim-dkim2-spec-02), covering the dkim2 {} module, Lua msys.validate.dkim2.sign / verify, forwarder recipes, ar_clauses(), debugging reason codes, keys (reuse DKIM1 DNS), and known limitations—with a production staging warning because the wire format is not final.

Updates content/momentum/navigation.yml so the page appears under Configuring Momentum beside the existing DKIM docs, with sub-nav links to signing and verifying sections.

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[cursor]

Cursor Bugbot has reviewed your changes and found 2 potential issues.

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[dkoerichbird]

authservid is required;

This can be read as the option being mandatory, which is not the case according to the table below.

[dkoerichbird]

Maybe remove the number to avoid having to update it other times ("... one of the verdict strings above.").