On Thu, Mar 31, 2016, at 01:25, Random832 wrote: > > if a message is cross-posted to two lists which both gateway to Usenet, > > and Mailman didn't make the Message-IDs unique, the news server would > > discard one of the two posts as a duplicate and the post would be > > missing from one of the recipient Usenet groups.
One additional thing that would be nice and would solve most of the duplicate problem with hypothetically including the rewritten Message-IDs in outgoing emails, would be to detect crossposts to multiple lists in the same Mailman instance, and to send them to Usenet (and to subscribers) as a single message, with appropriate headers for a crosspost. -- https://mail.python.org/mailman/listinfo/python-list
