David Krantz writes:
Is the documentation correct that ARC should be as simple to configure in mailman 3 as to add the private DKIM key and restarting mailman? (https://mailman.readthedocs.io/en/latest/src/mailman/handlers/docs/arc_sign....)
You need to enable ARC by adding the ARC section to mailman.cfg and setting "enabled = yes" in it.
I've submitted a pull request to update the documents.
I've tried that without finding any effect in my so far limited tests.
What do you mean by "effect"? Is the "effect" that you're not seeing the presence of ARC header fields in outgoing mail? If so, you probably haven't set the enabled flag.
If the effect you're looking for is that Google and several other participants in the ARC protocol accept your mail when they didn't before, you'll have to ask them about it.
I have not found anything in logs although I might have missed looking in one.
I don't recall that anything is logged by the module under normal circumstances, there may be some error logging. What would you expect to be logged?
Are there any known limitations?
Of what kind? It's a simple protocol: if there is authentication information (DKIM or ARC) in the incoming message, validate it. Then package up the validation in the ARC-AR, ARC-Signature, and ARC-Seal fields. Those are the operations the module performs.
Steve
-- Associate Professor Division of Policy and Planning Science http://turnbull.sk.tsukuba.ac.jp/ Faculty of Systems and Information Email: turnbull@sk.tsukuba.ac.jp University of Tsukuba Tel: 029-853-5175 Tennodai 1-1-1, Tsukuba 305-8573 JAPAN