February 2025 - Mailman-users - lists.mailman3.org

How To Install Mailman 3 on Debian 10 (Complete Guide)
by Brian Carpenter Feb. 25, 2025

Feb. 25, 2025

I have finished my how-to install Mailman 3 on Debian 10 completed to the point where you can use it to get a fully functional Mailman 3 environment up and running. This is a comprehensive guide that walks you through installing EVERYTHING (currently!) that Mailman 3 needs to run. It also makes updating Mailman 3/Postorius/Hyperkitty very easy. I have not added the update directions yet but will very soon. I also plan on adding a section on setting up DKIM and Xapian with Mailman 3. I hope this helps those who wish to get a Mailman 3 server up and running quickly and brings a sense of sanity to the confusion regarding the various documentation out there concerning the installation of Mailman 3/Postorius/Hyperkitty. I intend to add a How-to for Ubuntu 20 at some point. Without further ado: https://wiki.list.org/DOC/Howto_Install_Mailman3_On_Debian10 I am sure the above guide can use improvements. Feel free to contact me off-list to point out mistakes/improvements, etc. -- Brian Carpenter Harmonylists.com Emwd.com

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Speed up importing mailman2 lists
by t.maintz＠fz-juelich.de Feb. 24, 2025

Feb. 24, 2025

We are currently planning to migrate from mailman2 to mailman3 as a container, have around 1500 lists and would like to complete the migration ideally in a few hours. We would like to switch off mailman2 to have a defined state of the lists and import them to mailman3. The import of all lists via script takes about 3 days. Parallelizing the imports does not work due to lockings in the database. However, we cannot accept a downtime of 3 days. Does anyone have tips on how we can speed up the procedure or are there best practices for larger environments? Thanks and best regards, Thomas

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clean up spambot generated accounts
by Johannes Rohr Feb. 23, 2025

Feb. 23, 2025

Dear all, I'm trying to find a way to clean up hundreds of spambot generated accounts on my system. I was pointed to this script that should be capable of doing the task: https://www.msapiro.net/scripts/clean_users.py However, it seems outdated. First, the path to the interpreter is not what I find on my mailman3 installation. It says: #! /opt/mailman/mm/venv/bin/python However, the python command is located in /opt/mailman/venv/bin/python instead, no "mm" After fixing this, the script still throws an error: (venv) mailman@ida:~$ clean_users.py Traceback (most recent call last): File "/usr/local/bin/clean_users.py", line 55, in <module> django.setup() File "/opt/mailman/venv/lib/python3.10/site-packages/django/__init__.py", line 19, in setup configure_logging(settings.LOGGING_CONFIG, settings.LOGGING) File "/opt/mailman/venv/lib/python3.10/site-packages/django/conf/__init__.py", line 102, in __getattr__ self._setup(name) File "/opt/mailman/venv/lib/python3.10/site-packages/django/conf/__init__.py", line 89, in _setup self._wrapped = Settings(settings_module) File "/opt/mailman/venv/lib/python3.10/site-packages/django/conf/__init__.py", line 217, in __init__ mod = importlib.import_module(self.SETTINGS_MODULE) File "/usr/lib/python3.10/importlib/__init__.py", line 126, in import_module return _bootstrap._gcd_import(name[level:], package, level) File "<frozen importlib._bootstrap>", line 1050, in _gcd_import File "<frozen importlib._bootstrap>", line 1027, in _find_and_load File "<frozen importlib._bootstrap>", line 1004, in _find_and_load_unlocked ModuleNotFoundError: No module named 'settings' Can somebody explain to me, why this module is not found and what I can do to fix it, if anything? Thanks a lot in advance! Johannes

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Hyperkitty performance problem
by Tobias Diekershoff Feb. 20, 2025

Feb. 20, 2025

Hey all, last week we caught some AI bots causing high LOAD on our mailman3 servers archive, that we blocked with nginx rules. I'm not sure if it is related to this incident, but we noticed this when analyzing the log files at the time. In the mailman.log hyperkitty is listed 10k times and more to archive a single mail over the time of 2h, seemingly all with the same process ID > (1186) HyperKitty archived message [...] The mailman3-web.log has matching log entries that the mail was archived > hyperkitty.views.mailman Archived message every 0.5 seconds. In the web interface to the archive, the mail is only listed once though. My suspicion is, that these archiving processes are now overloading the system, preventing a timely catching up work of the queued messages. I could not find anything in the Mailman3 nor Hyperkitty documentation to better distribute the system resources to the Mailman runner or prevent Hyperkitty to restart archiving a mail over and over again. Any hint about where to look for the reason of this is highly appreciated. Best, Tobias -- Tobias Diekershoff >>> System Hacker Free Software Foundation Europe Schönhauser Allee 6/7, 10119 Berlin, Germany | t +49-30-27595290 Registered at Amtsgericht Hamburg, VR 17030 | fsfe.org/support OpenPGP-Key ID ... 0x25FE376FF17694A1 Fingerprint ...... 23EE F484 FDF8 291C BA09 A406 25FE 376F F176 94A1

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Mailman Core: REST API: Member Subscription Invitation
by Peter Knowles Feb. 20, 2025

Feb. 20, 2025

Product: Mailman Core Version: 3.3.10 When I post an "invite" to the REST API: http://localhost:8001/3.1/members Params: list_id = list.domain.tld subscriber = some(a)email.address display_name = Some Name invitation = true Should Mailman Core be attempting to send an "invitation" email to the "subscriber" address, or is this the job of the "client" calling the API? I understand the API does return "token", and "token_owner" on success, which I assume the "token" would be used for a subsequent "verification" process. I'm developing my own "frontend" for "subscribers", "moderators", "list admins", and "system admins" respectively. Sort of working through understanding what Core does and does not do itself.

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REST API: potential bug
by Peter Knowles Feb. 16, 2025

Feb. 16, 2025

I'm starting to develop against the REST API and found what might be a bug in the validation process. Sending a POST request with an "empty" payload returns 201 (created): http://localhost:8001/3.1/domains Since "mail_host" should be required at minimum to create a domain, this seems like there may be a bug with the REST API. The workaround for the moment is to add validation at the application layer, but the API should really be returning a 4xx code and error respectively.

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install v3.3.11
by Jose Bernal Feb. 14, 2025

Feb. 14, 2025

I'd like to install Mailman v3.3.11. Are there instructions for installing from pip? If not, is there an alternate way to install this latest version? When executing: pip install mailman==3.3.11 I get: ERROR: No matching distribution found for mailman==3.3.11 Thank you,

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Re: Moderation action "None" is misleading
by Stephen J. Turnbull Feb. 13, 2025

Feb. 13, 2025

Adding mailman-users(a)mailman3.org. Technical suggestions should go to distro channels or to Mailman's issue tracker: https://gitlab.com/mailman/mailman/-/issues/1176. Further discussion of technical details is best done there. Thomas Krichel writes: > Stephen J. Turnbull writes > > Debian has traditionally been quite slow to update Mailman, > > And now it has the addition issue that Debian testing python > standard it 3.13, so the nntplib is no longer supported. > Thus the current Mailman debian testing appears broken. That's Debian's problem, as we currently don't support Python 3.13, although of course we intend to. This is the only issue that came up in a quick search of Mailman's issue tracker for Python 3.13 (but I did not check the other subprojects such as Postorius). I conclude that not a lot of work has been done on supporting Python 3.13 (rather than the optimistic "there's nothing to be done"). From Mailman's point of view, users have two excellent options for the forseeable future: (1) don't gateway list <-> newsgroups (2) install Mailman into a Python 3.9--3.12 virtual environment. I'm sympathetic to the needs of the Debian developers, and at this point for 99% of software it's perfectly reasonable to aim to use 3.13 in the next Debian release. Unfortunately for Mailman users on Debian hosts that's not high on our list of priorities since we recommend a virtual environment installation in any case. At present there seem to be three ways forward for Debian packaging: 1. Remove NNTP support. (In honor of larsi, I'd rather not.) 2. Add nntplib.py from the Python 3.12 nntplib, as a stopgap until option 3 can be implemented. I can't speak for other developers but we might be willing to add it as a contrib module, especially if that might make life easier for distro packagers. It's suboptimal though since that absolutely has to be considered techical debt that will need to be paid someday. 3. Port Mailman to pynntp (that may need to be Debian packaged, too), which has seen a revival of activity and two feature releases since 2023. My inclination as a Mailman core developer is not to participate actively in development of NNTP support in Mailman for Python 3.13+ unless we see an outpouring of support from site admins. However, I would be happy to answer questions and work on Mailman-side issues that are blocking or inconvenient for the NNTP work. Mark and Abhilash would undoubtedly contribute as well, on a time-available basis. > I certainly would love to build an alternative Mailman Debian > package that would be more up-to-date, but I don't want > to do it on my own. Debian and Python are compatible free software; just take the existing package metadata, in a recent Mailman (presumably the most recent release) drop in the most recent nntplib, and change all the import statements. mailman/src/mailman/mta/nntplib.py seems like a plausible location. IWBNI you could keep all Mailmanisms out of nntplib (because of the GPL) so any bugfixes or improvements could be available to the Python community. I think you could probably be up and running VERY quickly with that approach. Of course it wouldn't just slot into the next iteration of Debian because they have stringent QA (or maybe that could go into unstable?). I'm pretty sure it would be useful right away to a whole lot of people who are willing to use a PPA. Regards, Steve

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Pck files stuck in out queue
by Lieuallen, Thomas Otis Feb. 10, 2025

Feb. 10, 2025

Running Mailman 3.3.10 I have 11x pck files stuck in my out queue. There tends to always be a .bak file as well. If I run ‘ls -l’, the files are continually updated and rotated through, just as fast as I can look. The out runner is consuming copious CPU time. I was hoping this would help: [logging.runner] level: DEBUG But, if so, I don’t see the logs anywhere. I believe they’re all for one list. When I use ‘strings’ on one to get a hint of what’s inside, I see the list members at the bottom (recipients). One of them consistently has ‘!’ before their email address. Not sure if that’s a clue. Just no other reason to suspect that, though. Ideas on where/how to track down the status of these files and fix whatever’s broken? Thank you Tom Lieuallen Oregon State University

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How to limit numbers of outgoing emails per connection
by Alain D D Williams Feb. 10, 2025

Feb. 10, 2025

Exim tells me "no immediate delivery: more than 30 messages received in one connection" The emails then sit in the exim queue until a queue runner kicks in - which happens once every 30 minutes. The result is considerable delays which makes list email conversations bouncy. Question: how do I tell MM3 to send no more than 30 emails in one connection to exim (via SMTP to localhost port 25) ? If that is not possible, how do I find the number that MM3 batches outgoing emails so that I can configure exim to match (as I did with MM2) ? I see documentation pages like the following. They are useless to me, incomprehensible without a lot of learning. I program in several languages but only a little Python. What I am looking for is a setting in a config file. https://docs.mailman3.org/projects/mailman/en/latest/src/mailman/runners/do… -- Alain Williams Linux/GNU Consultant - Mail systems, Web sites, Networking, Programmer, IT Lecturer. +44 (0) 787 668 0256 https://www.phcomp.co.uk/ Parliament Hill Computers. Registration Information: https://www.phcomp.co.uk/Contact.html #include <std_disclaimer.h>

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