On Sat, Mar 26, 2016, at 23:18, Ben Finney wrote: > What you've demonstrated is that at least one host is violating > communication standards by altering existing reference fields on > messages in transit.
The usenet gateway relays posts that originated on the mailing list to usenet with their *Message-ID* replaced wholesale with "<mailman.*.python-list@python.org>" - 90% of the time when I've traced a broken thread this has been to blame, and I've complained at least twice of this before, once not two weeks ago. -- https://mail.python.org/mailman/listinfo/python-list
