I'm presuming we're talking about ways to bidirectionally mirror between
mailman and a Discourse forum.
On 10Dec2022 21:21, Stephen J. Turnbull <stephenjturnb...@gmail.com> wrote:
Since Mailman (and its users!) expects messages to arrive
asynchronously and handles that using threading information, as far as
I can see the Mailman side is handled as well as it can be now that
Discourse provides threading information, and you just subscribe
Mailman to Discourse.
That would work for receiving Discourse posts into the Mailman mailing
list.
And obviously we can just sign up Discourse to
Mailman.
Can we? If you're talking about posts from the mailing list appearing on
Discourse, this isn't trivial.
The latter direction may be harder, depending on whether
Discourse can make sense of batches of messages being composed
independently of its message flow.
It (anecdotally, link lower down) looks like you can make a new Topic
(thread) on Discourse if your user has a sufficient trust level
(discourse users become more trusted over time). But the message author
needs to be a Discourse user. So either all the individual mailman users
need to be Discourse members _or_ the from address needs to be a
list-wide id (eg the list submission address), but then the posts won't
have the right author on the Discourse side.
None of that is easy to fix - mailing lists essentially just forward
messages, with some gatewaying of what messages they allow inbound
depending on the list. By contrast, Discourse posts have authors which
must be Discourse users.
The fact that Discourse didn't
provide threading information to email users in the past suggest that
it has an alternative mechanism for organizing mail flows, and message
IDs and Reference headers from email may not be so easily integrated.
No, that stuff works ok now.
For new Topics (threads) this post:
https://discourse.gnome.org/t/email-use-of-discourse-how-to-start-a-new-thread/12324/4
sugggests that you can email to a specific category and I presume it
would appear as a new Topic. I suspect any `In-Reply-To` or `References`
would be ignored.
For replies, the email goes to a post-specific address which is used to
stitch the message into an existing Topic discussion thread. The
outgoing `In-Reply-To` and `References` headers are made on the fly when
Discourse sends the post as email to whichever users are set up to
receive an email copy. The source `Message-ID` is preserved.
I know nothing about Discourse internals, but I suspect that's going
to be the difficult part if there is one. With a little luck that
will be no problem. ;-)
I know a little, but not a lot.
In short: copying the Discourse stuff to mailman could be done by
subscribing the mailman list to the Discourse forum. Letting
_nonDiscourse_ users reply or post to Discourse is not trivial.
Cheers,
Cameron Simpson <c...@cskk.id.au>
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