On 2/23/26 13:56, Laurens Kils-Huetten wrote:
I have recently installed mailman3 on a Debian trixie system.
How? By following
<https://docs.mailman3.org/en/latest/install/virtualenv.html>,
installing Debian packages or ??
While I managed to set up most of it (the mailing lists, postorius and
also a working gateway to our inn2 news server) I'm seeing a weird
duplication of messages, that seems to be related to the error
messages posted below.
What is the result from the command `mailman conf -s nntp`?
What are all the settings for the list at Settings->Newsgroup Gateway in
Postorius?
When I switch off gating to nntp the duplication stops. Also only mail
messages are duplicated, not the postings on the news server.
Any pointers as to what to look into, or how to remedy this problem
are greatly appreciated :)
Thanks,
Laurens
here come the error logs:
Feb 23 20:39:08 2026 (2776528) ACCEPT:
<[email protected]>
Feb 23 20:39:10 2026 (2776528) ACCEPT:
<[email protected]>
The above duplicate post comes before the following error, so I don't
think the error is related to the duplication.
Feb 23 20:39:12 2026 (2776530) <[email protected]>
NNTP error for [email protected]
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/mailman/runners/nntp.py", line 94, in
_dispose
conn.post(fp)
~~~~~~~~~^^^^
File "/usr/lib/python3/dist-packages/nntplib/__init__.py", line 916, in post
return self._post('POST', data)
~~~~~~~~~~^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/nntplib/__init__.py", line 909, in _post
return self._getresp()
~~~~~~~~~~~~~^^
File "/usr/lib/python3/dist-packages/nntplib/__init__.py", line 492, in
_getresp
raise NNTPTemporaryError(resp)
nntplib.NNTPTemporaryError: 441 Can't set system Injection-Info header field
This is a response from your nntp server.
Note: the above traceback indicates that this nntplib is
standard-nntplib from PyPI which is normally only installed if Python is
3.13. If this is Python 3.13 and you have installed Mailman from other
than the head of the gitlab branch, see
<https://lists.mailman3.org/archives/list/[email protected]/message/KQQEGPQJG7KWSFQ6R3VGZQQDHNHPKIVX/>
--
Mark Sapiro <[email protected]> The highway is for gamblers,
San Francisco Bay Area, California better use your sense - B. Dylan
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