For those of you thinking about statistics regarding DKIM, have I missed any
that might be useful to the working group?
Some ideas (some may be a duplicate from your list):
- number of all message signed by this milter
- number of all messages checked for signatures
- number of messages containing any signature (valid or not)
- number of messages containing a valid author domain signature
- number of messages containing a valid third-party signature
- number of messages coming from a mailing list containing
any signature but not any valid signature
- number of messages NOT coming from a mailing list containing
any signature but not any valid signature
Distinguishing broken signatures in direct mail vs mailing list
mail provides much better indication of the quality of signatures.
A mailing list recognition may be just a good estimate,
like checking for presence of any of:
Precedence: list
List-Id:...
List-Post:...
List-Unsubscribe:...
Mailing-List:...
From matching /^[^\(_at_)]+-(request|bounces|owner)/ or /^owner-[^\(_at_)]+/
Mark
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