On 12/05/2020 09:20, Alessandro Vesely wrote:
On Tue 12/May/2020 00:08:15 +0200 Dave Crocker wrote:
On 5/11/2020 1:33 PM, Jim Fenton wrote:

There might also be the situation where a domain wants to delegate a key
Hence my suggestion that figuring out such details is where discussion could
get interesting, if only because people will raise all sorts of combinatorial
theories, independent of demonstrated need, and this is a space with lots of
combinatorials...

Besides delegated keys, some other obvious classes I'd propose —without
venturing to forge English keywords— are as follows:

* 1st class personal messages (with or without From: restrictions),

* mailing lists (with or without From: rewrite),

* bulk messages (including transactional confirmations, complaints, ...),

* forwarded mail (after severe/loose antispam filtering).

Perhaps, the keywords should be dash-separated jumbles of terms chosen from a
predefined grab bag, to allow for combinations.


Some prior work in this space is TEOS.

https://www.researchgate.net/publication/301324998_Trusted_Email_Open_Standard_A_Comprehensive_Policy_and_Technology_Proposal_for_Email_Reform

Cheers,
  Steve

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