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List:       mailman-users
Subject:    [Mailman-Users] Migrating Mailman Lists from One Server to Another
From:       Onyeibo Oku <onyeibo () schemefusion ! com>
Date:       2020-10-29 10:00:05
Message-ID: 20201029110005.58ef6bb2 () reel ! abode ! box
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Greeting,

Is there a recommended a stable or reliable approach for migrating
Mailman lists from one server to another?  I have tried two methods
already and, in both cases, the resulting lists were buggy.  The source
lists are not live (i.e. old server/host is no longer accessible).
However, we copied all files/folders from the previous
/var/lib/mailman/ to a folder in our new server.  I guess the scenario
rules out Method-#1 described on
https://wiki.list.org/DOC/4.70%20How%20do%20I%20change%20the%20name%20of%20%28rename%29%20a%20list%3F

I also tried the steps illustrated on
https://debian-administration.org/article/567/Migrating_mailman_lists.
That gave me lots of errors pertaining to permissions despite running
'check_perms -f' (makes me wonder what the recommended
permissions/ownership for files in /var/lib/mailman/ would be).  In the
end, the lists were visible via the web interface but I couldn't log
into administration from there (I got an error page ... something about
Mailman being buggy).  Some other pages wouldn't open too.  I got
similar results after following
https://www.mail-archive.com/mailman-developers@python.org/msg03127.html

Method #2 at
https://wiki.list.org/DOC/4.70%20How%20do%20I%20change%20the%20name%20of%20%28rename%29%20a%20list%3F
sounds appealing.  I tried the script but python2 was looking for a
path module. Is that script still supported?  In any case, I'd
appreciate any help I can get to bring our lists back online.

Regards
Onyeibo
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