gating mailman <-> inn2, message duplication

[Martin Burmester]

Hi Julien

Am 07.04.2026 um 19:26 schrieb Julien ÉLIE:
> Hi Laurens,
> 
>> I'd like to ask for help with this problem I'm having with setting
>> up gating between a mailing list and a local newsgroup.
>>
>> The symptom is this: when I send messages from a subscribed email
>> account to the list, I get a duplicate back to the list with a notable
>> lag of about 1 to 3 seconds.
> 
> Did you manage to solve your issue, following the discussion which took 
> place in news.software.nntp?
> 
> Do not hesitate to tell us how to improve the manual page of news2mail 
> or other programs, as well as the comments in the default configuration 
> files (like newsfeeds) to facilitate the configuration for future users.
> 
> 
>> # this is in /etc/news/newsfeeds:
>>
>> news2mail!:!*:Ac,Tc,Wn*:/usr/lib/news/bin/news2mail
>> test-grenzland-club/grenzland.club:!*,grenzland.test:Ap,Tm:news2mail!
> 
> Should it be mentioned in the newsfeeds sample file that this is not 
> necessary as Mailman can be configured to pull the news itself?  Is it 
> what you finally did?  And if that is the case, what needs to be 
> configured in INN to make gatewaying work with current version of 
> Mailman 3?

I dont know what he did, but yes, using news2mail with Mailman should be 
considered harmfull. Mailman (2 and 3) has its own facility to check for 
new messages via nnrp and send them to mailing list subscribers.

There is another supported setup, that is makeing the group a moderated 
group and setting the mailman list address and having everything go 
through mailman. In this setup mailman can also be used as a moderation 
interface. I have only tested this with mailman 2 not with mailman 3.

Cheers
Martin