[ietf-dkim] New Requirements: SSP must offer Highest Protection Possible

I suggest a new requirement:

- SSP must offer Highest Protection possible for Responsible
  Originating domains (High Value or not) who desire 100%
  exclusivity in their mail digital signatures which includes

    - no expectation for tampering, and
    - no expectation for 3rd party signatures, and
    - an expectation that verifiers will follow
      and honor this policy.

Even if one feels "it probably won't be used", there is no evidence
that it won't, therefore, the highest protection possible for
a mail digital signature must be made available, not excluded as a
possibility for usage.


---
HLS


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