- Mailman-users - lists.mailman3.org

documentation for older versions?
by bulger＠baeri.org Nov. 3, 2026

Nov. 3, 2026

The version installed with pip at the moment is 3.3.10, but the only 3.3 documentation online that I can find is for 3.3.11b1. Is there a way to access the 3.3.10 version, or older versions in general?

3 4

postgresql throws SSL warnings
by IEM Network Operation Center (IOhannes m zmölnig) Nov. 3, 2026

Nov. 3, 2026

hi, today i finally migrated my mailman3 instance from Debian/bookworm to Debian/trixie, using the Debian packages of mailman3. everything worked great, and i'm now running: > Mailman Core Version: GNU Mailman 3.3.10 (Tom Sawyer) > Mailman Core API-Version: 3.1 > Mailman Core Python-Version: 3.13.5 (main, Aug 10 2026, 12:06:59) [GCC 14.2.0] the Debian packages have - python3-django-hyperkitty 1.3.12 - python3-django-postorius 1.3.13 - python3-psycopg2 2.9.10 the instance is backed by a local PostgreSQL-17 instance (17.11.0) during the upgrade, I noticed that postgresql is constantly writing warnings to its logfile, like so: > 2026-10-29 17:26:06.875 CET [171290] [unknown]@[unknown] LOG: could not accept SSL connection: EOF detected "constantly" meaning: about 4.5 times per second! or ~16400 lines per hour. this is obviously triggered by the webinterface, as the errors stop immediately if i issue a `systemctl stop mailman3-web`. it's also notable, that I do not notice any actual problems on the webinterface, including the archives (so the DB connection seems to work fine). accordingly, /var/log/mailman3/web/mailman-web.log doesn't indicate any problems. also, this issue is not something introduced by the upgrade: i got the same warnings with my old mailman3.3.8 instance with PostgreSQL-15. it's just that i noticed the errors only now. here's the relevant section (afaict) from /etc/mailman3/mailman-web.py: ~~~ DATABASES = { 'default': { 'ENGINE': 'django.db.backends.postgresql_psycopg2', 'NAME': 'mailman3web.db', 'USER': 'REDACTED', 'PASSWORD': 'REDACTED', 'HOST': 'localhost', 'PORT': '', 'OPTIONS': { }, } } ~~~ the ssl related settings in my /etc/postgresql/17/main/postgresql.conf are (these are just the defaults, i didn't change anything): ~~~ ssl = on ssl_cert_file = '/etc/ssl/certs/ssl-cert-snakeoil.pem' ssl_key_file = '/etc/ssl/private/ssl-cert-snakeoil.key' ~~~ since everything appears to work, i might ignore the issue, but since the logfiles get pretty big due to the permanent logging, i'd rather not... any ideas what is going on? -- IOhannes m zmölnig IEM network operation center https://noc.iem.at/

2 3

What are these about ?
by alain williams Nov. 3, 2026

Nov. 3, 2026

I receive several of these a day, not one an hour. • What are they ? (what do they mean) • How do I stop them ? (or should I do something with what they are telling me) This is from a Debian 13 (Trixie) machine running mailman as installed from the Debian package. TIA BTW: my earlier problems with Postorius caused by upgrading to Trixie have now been fixed by package updates. ----- Forwarded message from Cron Daemon <root(a)bf****.phcomp.co.uk> ----- Date: Mon, 02 Nov 2026 12:00:06 +0000 From: Cron Daemon <root(a)bf****.phcomp.co.uk> To: www-data(a)bf****.phcomp.co.uk Subject: Cron <www-data@bf****> [ -f /usr/bin/django-admin ] && systemctl is-active --quiet mailman3-web && flock -n /var/run/mailman3-web/cron.hourly /usr/share/mailman3-web/manage.py runjobs hourly 12:00:03 [Q] INFO Enqueued [default] 20833 12:00:03 [Q] INFO Enqueued [default] 20834 12:00:03 [Q] INFO Enqueued [default] 20835 12:00:03 [Q] INFO Enqueued [default] 20836 12:00:03 [Q] INFO Enqueued [default] 20837 12:00:03 [Q] INFO Enqueued [default] 20838 12:00:03 [Q] INFO Enqueued [default] 20839 12:00:03 [Q] INFO Enqueued [default] 20840 ----- End forwarded message ----- -- 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>

5 8

Directly confirm a superuser's email?
by Volkmar Grote Oct. 30, 2026

Oct. 30, 2026

Hi, I installed Mailman3, created a Django superuser, tried to log into the GUI, and was told there was a confirmation email being sent out. For some reason it was sent to "www-data(a)mailmans.domain", the postfix log says, not the configured email of "my-name(a)my.organisation", and ended in the bin since that user does not accept emails. Is there a way to create a "pre-confirmed" superuser without that email being sent? Or to manually confirm it on the command line? That would be quicker than brooding over the configuration files for another couple of hours. Thanks in advance Volkmar

2 2

Moving lists to different server and domain
by Julian Kippels Oct. 29, 2026

Oct. 29, 2026

Hi, I want to move all my lists to another server. While I am doing that, I also want to change all lists from listname(a)domain.tld to listname(a)lists.domain.tld How would I best go about this? Will I have issues with the archives of the lists when the domain changes? Thanks in advance, Julain

4 6

which mailman3 containers to use?
by Thing Oct. 24, 2026

Oct. 24, 2026

Hi, Is maxking/docker-mailman still the recommended container deployment for a new Mailman 3 installation in 2026? I am building a PoC on RHEL 10 using rootless Podman, with MariaDB running externally on the host (for now to ease backup issues). The repository appears somewhat inactive and its example compose file uses maxking/mailman-core:0.4 and maxking/mailman-web:0.4. Are these images still maintained and suitable for a new deployment, or is another container image or installation method now recommended? regards Steven

5 7

does users/find do a join with addresses?
by bulger＠baeri.org Oct. 20, 2026

Oct. 20, 2026

In the REST API, users/find is supposed to match on email or display_name (at least). When the user is linked to an address, that works. But when I unlink the address, the same query returns no results. If I get all users I can see that the user record still exists. Is there an inner join or some other kind of internal dependency at play here?

2 1

list archives bleeding across domains.
by Hugh Esco Oct. 16, 2026

Oct. 16, 2026

I launched a mailman installation a couple of days ago, `pip list and `cat /etc/os-release` output reproduced below. It hosts six domains and a handful of lists for most of them. My issue is that lists archives are being linked across domain names for annonymous user, and I fear probably for users who are logged in as well. I get it that one domain's news list is supposed to be public, but does it have to be listed on the page for each domain? Can't it be listed for anonymous users ONLY IF they browse to its domain? My settings_local.py includes: FILTER_VHOST = True SITE_ID = 0 I have another reason (MAILMAN_ARCHIVER_KEY is working) to believe that my settings_local.py file is being read into the configuration. Any advice? All help is appreciated. Thanks, -- Hugh Esco ((mm3) ) list@lists02:~$ cat /etc/os-release PRETTY_NAME="Ubuntu 24.04.5 LTS" NAME="Ubuntu" VERSION_ID="24.04" VERSION="24.04.5 LTS (Noble Numbat)" VERSION_CODENAME=noble ID=ubuntu ID_LIKE=debian HOME_URL="https://www.ubuntu.com/" SUPPORT_URL="https://help.ubuntu.com/" BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/" PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy" UBUNTU_CODENAME=noble LOGO=ubuntu-logo list@lists02:~$ . /opt/local/mm3/bin/activate ((mm3) ) list@lists02:~$ mailman --version GNU Mailman 3.3.9 (Tom Sawyer) ((mm3) ) list@lists02:~$ mailman-web --version 4.2.30 ((mm3) ) list@lists02:~$ pip list Package Version ------------------- ----------- aiosmtpd 1.4.6 alembic 1.20.0 asgiref 3.12.1 atpublic 9.0.0 attrs 26.1.0 authheaders 0.16.3 authres 1.2.0 certifi 2026.7.22 cffi 2.1.1 charset-normalizer 3.5.2 click 8.5.0 comrak 0.0.16 cryptography 50.0.2 defusedxml 0.7.1 Django 4.2.30 django-allauth 65.19.7 django-appconf 1.2.0 django_compressor 4.6.0 django-extensions 4.1 django-gravatar2 1.4.5 django-haystack 3.4.0 django-mailman3 1.3.15 django-picklefield 3.4.0 django-q2 1.10.0 djangorestframework 3.17.2 dkimpy 1.1.8 dnspython 2.9.0 docutils 0.23 falcon 4.4.0 flufl.bounce 6.0.0 flufl.i18n 8.0.0 flufl.lock 10.0.0 greenlet 3.5.6 gunicorn 26.2.0 HyperKitty 1.3.12 idna 3.20 lazr.config 4.0.0 lazr.delegates 4.0.0 mailman 3.3.9 mailman-hyperkitty 1.2.1 mailman-web 0.0.9 mailmanclient 3.3.5 Mako 1.4.3 MarkupSafe 3.0.4 mistune 3.3.4 networkx 3.7 nh3 0.3.7 oauthlib 4.0.0 packaging 26.3 passlib 1.7.4 pip 26.2.1 postorius 1.3.13 psutil 7.2.2 psycopg2-binary 2.9.13 publicsuffix2 2.20191221 pycparser 3.11 Pygments 2.21.0 PyJWT 2.15.1 python-dateutil 2.9.0.post0 python-gettext 5.0 python3-openid 3.2.0 rcssmin 1.3.0 readme_renderer 46.0 requests 2.34.2 rjsmin 1.3.0 robot-detection 0.4 six 1.17.0 SQLAlchemy 2.0.54 sqlparse 0.6.0 typing_extensions 4.16.0 urllib3 2.8.0 uWSGI 2.0.31 wheel 0.48.0 Whoosh 2.7.4 zope.component 7.1 zope.configuration 7.1 zope.event 6.2 zope.hookable 8.3 zope.i18nmessageid 8.3 zope.interface 8.7 zope.schema 8.1 zstd 1.5.7.2 -- hesco(a)yourmessagedelivered.com 912-571-1833 (cell, sms)

4 4

final stages of development, ymd_mailman3 puppet module
by Hugh Esco Oct. 15, 2026

Oct. 15, 2026

Of interest to this community, I posed the following prompt: ``` mo betta'. Thank you. now it is also a more useful modules for use by others. the puppet forge once required a module author to certify rights over the IP to an uploaded module by each participating author. Has their policy changed to accommodate AI use in development? 85% of this module, which is getting close to usability as a publicly accessible forge module, pre-existed my use of BraveAI for the final mile. What is the forge's take on the involvement of AI and your having digested the mm3-developers list and the application documentation in this process. Is it necessary, for the forge, that I consult the team whose work you have referenced for their permission? ``` Understanding that BraveAI is not an attorney, it nonetheless responded in part, . . . "On the Mailman 3 team's permission: you do not need it." it went on to suggest inclusion in my README.md, this copy, which I have modified to acknowledge use of AI in its development, and expand the scope of what this module does. ``` ## Acknowledgements This module automates deployment of [Mailman 3] (https://gitlab.com/mailman/mailman) and its supporting components, the importation of archives from legacy lists, the hiera controlled configuration of the installation and its integration with runit, postfix, sqlite3 or postgresql, apache2. Configuration guidance was derived from the Mailman 3 documentation and mailman-users mailing list discussions, and in the final mile with assistance by BraveAI which has a better grasp on what those primary sources offer than do I. ``` I put this question here to hear what the actual humans of the development team have to say on this matter. My project has been developed as the ymd_mailman3 puppet module. In my role definition, after some boilerplate setup, I include the module like so: require ymd_mailman3 Along with 39 ymd_mailman3:: specific entries in hiera (mostly strings, paths, config options, but also a couple of arrays and a hash describing the (django) sites, domains and lists to be hosted), and another 10 in the python:: namespace (which should likely be refactorsed under the primary naming convention), it builds a specified version of python from source, installs necessary PyPi packages, wires it to a database and applies all the initial configuration for the installation, and the import of any archives which have not yet been processed. The initial installation runs for about 30 minutes (on 4gb of ram and a couple of processors assigned to the docker containers where I have done my development). I've watched a puppet run take another 20 minutes importing a few lists (2 four years old, one 25 years old). For those who do not use puppet, and might want to adapt this framework to ansible or chef, perhaps in the future I might write: "What I learned installing mm3, that I missed in the documentation" Looks like ansible offers several options I should perhaps study for ideas on hardening and exposure of features. I might also be tempted, with some nudging to offer revisions to the official docs, if folks are interested. I still have some cruft removal left, further refactoring, etc. But the code might be summarized like so. ``` # cloc . 62 text files. 62 unique files. 5 files ignored. github.com/AlDanial/cloc v 1.82 T=0.04 s (1332.8 files/s, 47292.0 lines/s) -------------------------------------------------------------------------------- Language files blank comment code -------------------------------------------------------------------------------- Puppet 34 289 121 1056 ERB 17 71 0 315 Bourne Again Shell 2 18 7 57 Ruby 3 16 3 48 Bourne Shell 2 12 12 33 -------------------------------------------------------------------------------- SUM: 58 406 143 1509 -------------------------------------------------------------------------------- ``` TODO: The ::params class offers sane defaults for anything missing from the hiera data structure, at least for an administrator comfortable working in a file system organized the debian way. I'd be happy to work with developers comfortable in other file system layouts, familiar with the package names for other linux flavors to write conditionals to drive the base assignments required to accommodate other distributions. Let me know please if that would be of interest to you. I also welcome help from nginx administrators for adding a path to accommodate a different local reverse proxy. One day perhaps I can refactor the python deployment code to rely on puppet-python instead of its own internal implementation. It had not served my purpose when I first tested it two years ago. Looking forward to hearing from anyone interested by phone or email, here on the list, or privately. Cheers. -- hesco(a)yourmessagedelivered.com 912-571-1833 (cell, sms)

1 0

REST API - memberships of an address not linked to a user
by Bradford Bulger Oct. 13, 2026

Oct. 13, 2026

I have an address that is no longer linked to any user. It was linked in the past, and it was added to a mailing list while linked. The link between the user and the address has since been deleted. addresses/bbulger(a)ozone.arc.nasa.gov returns: {#8911 +"email": "bbulger(a)ozone.arc.nasa.gov", +"original_email": "bbulger(a)ozone.arc.nasa.gov", +"registered_on": "2026-10-13T17:18:35", +"self_link": "http://localhost:8001/3.1/addresses/bbulger@ozone.arc.nasa.gov", +"verified_on": "2026-10-13T17:18:35", +"http_etag": ""99abfe09ad3d856eeda533f0b375c0b656d7d346"", } When I look at the roster of members for my list - lists/eureka.espo.test.nasa.gov/roster/member - there is an entry for this address {#8903 +"address": "http://localhost:8001/3.1/addresses/bbulger@ozone.arc.nasa.gov", +"bounce_score": 1, +"last_bounce_received": "2026-10-13T17:18:36", +"last_warning_sent": "0001-01-01T00:00:00", +"total_warnings_sent": 0, +"delivery_mode": "regular", +"email": "bbulger(a)ozone.arc.nasa.gov", +"list_id": "eureka.espo.test.nasa.gov", +"subscription_mode": "as_address", +"role": "member", +"display_name": "", +"self_link": "http://localhost:8001/3.1/members/a77bbc4067fa40fdb74cde507f323d89", +"member_id": "a77bbc4067fa40fdb74cde507f323d89", +"http_etag": ""f6eaf8c4a7742973f66002122fdd2f08a64259d9"", }, But if I query for the memberships of that address - addresses/bbulger(a)ozone.arc.nasa.gov/memberships - there are no results. Is that a bug? Am I misunderstanding something? I can find subscriptions for the address with members/find querying on subscriber {#8854 +"address": "http://localhost:8001/3.1/addresses/bbulger@ozone.arc.nasa.gov", +"bounce_score": 1, +"last_bounce_received": "2026-10-13T17:18:36", +"last_warning_sent": "0001-01-01T00:00:00", +"total_warnings_sent": 0, +"delivery_mode": "regular", +"email": "bbulger(a)ozone.arc.nasa.gov", +"list_id": "eureka.espo.test.nasa.gov", +"subscription_mode": "as_address", +"role": "member", +"display_name": "", +"self_link": "http://localhost:8001/3.1/members/a77bbc4067fa40fdb74cde507f323d89", +"member_id": "a77bbc4067fa40fdb74cde507f323d89", +"http_etag": ""f6eaf8c4a7742973f66002122fdd2f08a64259d9"", }, So the immediate issue looks to be handled OK. I am just curious. Thanks.

2 1

How to delete empty archives by script?
by Andreas Vetter Oct. 13, 2026

Oct. 13, 2026

Hi, We usually configure our lists to have no archives, but sometimes this is done after hyperkitty already creates the empty archive. Is there a way (script) to delete empty archives using a script? Regards, Andreas

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Stopped getting my own messages to a list
by Lars Bjørndal Oct. 12, 2026

Oct. 12, 2026

I recently stopped getting my own messages when posting to one of the lists. I get my own mail when posting to other lists. Receive own postings is set to Yes. I'm a non-member on the list I'm posting to, but that list has another list as a member, and I'm a member of that list, with Receive my own post set to yes. I've not configured these lists for a long time, and it has worked until recently. Any idea on where to search for the cause? I've changed dmarc policy on the domain from none to quarantine. Should that matter? Lars

3 10

finding all memberships for a user using a string match in REST API
by bulger＠baeri.org Oct. 4, 2026

Oct. 4, 2026

I'm trying to return all the memberships for members with email addresses that match a given string. The equivalent of 'mailman findmember jo', which returns 'john(a)example.com' and lists, 'joe(a)example.com' and lists, etc. What I'm doing now is finding users with a string match, then for each user getting their addresses, and then for each address getting memberships. Is there anything more direct? I tried to query memberships using 'user' but I guess that's not supported?

2 1

Implement a simple non javascript captcha to mailman
by Lars Bjørndal Oct. 4, 2026

Oct. 4, 2026

I need to implement some sort of captcha for Mailman accounts. As all my lists are for Norwegians, I think it's enough to have a simple question in Norwegian that has to be answered. I'm not a Python programmer, and I asked Gemini. He suggested that I should add a settings_local.py file in /etc/mailman3, which settings.py from the same folder should import, as it have, at the end: ``` try: from .settings_local import * except ImportError: pass ``` But the code from settings_local.py doesn't semm to be run. The settings_local.py have: ``` import sys import os CURRENT_DIR = os.path.dirname(os.path.abspath(__file__)) if CURRENT_DIR not in sys.path: sys.path.insert(0, CURRENT_DIR) ACCOUNT_ADAPTER = 'mailman_local.adapter.CustomMailmanAccountAdapter' ACCOUNT_FORMS = {'signup': 'mailman_local.forms_no.DynamicMathCaptchaSignupForm'} INSTALLED_APPS += ('mailman_local',) ``` I have the directory /etc/mailman3/mailman_local with the following files: - adapter.py - forms_no.py - __init__.py If this at all is possible, I'd like to have the extra code/files in a place where an upgrade doesn't affect them, so /etc/mailman3 seems to be a good location. Do you have suggestions in how to get this or a similar approach to work? Thanks, Lars

4 6

REST API list of endpoints?
by bulger＠baeri.org Oct. 2, 2026

Oct. 2, 2026

Is there a list of the commands available through the REST API? Or maybe it's something I could generate from some part of the code in the repository?

2 2

problem with sqlalchemmy
by simo＠oziosi.org Sept. 28, 2026

Sept. 28, 2026

Hi after a pip reinstall, my mailman (3.3.10, on mariadb) fails with: ------------------------------- 2026-09-26 22:08:25 [FALCON] [ERROR] GET /3.1/lists?advertised=true&count=0&page=1 => Traceback (most recent call last): File "/opt/mailman/venv/lib/python3.11/site-packages/falcon/app.py", line 481, in __call__ responder(req, resp, **params) File "/opt/mailman/venv/lib/python3.11/site-packages/mailman/rest/lists.py", line 342, in on_get resource = self._make_collection(request) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/opt/mailman/venv/lib/python3.11/site-packages/mailman/rest/helpers.py", line 171, in _make_collection start, total_size, collection = self._paginate( ^^^^^^^^^^^^^^^ File "/opt/mailman/venv/lib/python3.11/site-packages/mailman/rest/helpers.py", line 153, in _paginate total_size = len(collection) ^^^^^^^^^^^^^^^ File "/opt/mailman/venv/lib/python3.11/site-packages/mailman/utilities/queries.py", line 48, in __len__ .scalars(select(func.count()).select_from(self._query)) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "<sqlalchemy generated _generative() wrapper for sqlalchemy.sql.selectable.Select.select_from>", line 2, in select_from return target(fn, self, *froms) ^^^^^^^^^^^^^^^^^^^^^^^^ File "/opt/mailman/venv/lib/python3.11/site-packages/sqlalchemy/sql/base.py", line 296, in _generative x = fn(self, *args, **kw) ^^^^^^^^^^^^^^^^^^^^^ File "/opt/mailman/venv/lib/python3.11/site-packages/sqlalchemy/sql/selectable.py", line 6631, in select_from self._from_obj += tuple( ^^^^^^ File "/opt/mailman/venv/lib/python3.11/site-packages/sqlalchemy/sql/selectable.py", line 6632, in <genexpr> coercions.expect( File "/opt/mailman/venv/lib/python3.11/site-packages/sqlalchemy/sql/coercions.py", line 434, in expect return impl._implicit_coercions( ^^^^^^^^^^^^^^^^^^^^^^^^^ File "/opt/mailman/venv/lib/python3.11/site-packages/sqlalchemy/sql/coercions.py", line 1287, in _implicit_coercions self._raise_for_expected(element, argname, resolved) File "/opt/mailman/venv/lib/python3.11/site-packages/sqlalchemy/sql/coercions.py", line 705, in _raise_for_expected super()._raise_for_expected( File "/opt/mailman/venv/lib/python3.11/site-packages/sqlalchemy/sql/coercions.py", line 528, in _raise_for_expected raise exc.ArgumentError(msg, code=code) from err sqlalchemy.exc.ArgumentError: FROM expression, such as a Table or alias() object expected, got <sqlalchemy.sql.selectable.Select object at 0x7f1a27269050>. To create a FROM clause from a <class 'sqlalchemy.sql.selectable.Select'> object, use the .subquery() method. (Background on this error at: https://sqlalche.me/e/21/89ve) [26/Sep/2026:22:08:25 +0200] "GET /3.1/lists?advertised=true&count=0&page=1 HTTP/1.1" 500 38 "-" "GNU Mailman REST client v3.3.5" ------------------------------- I tried to add: debug: yes to [database] and [logging.database] level: debug path: mailman.database.log But i cannot get more details when the error happens. Any hints to help me debug the problem? many thanks, simon

5 5

Moderation via command line
by alain williams Sept. 24, 2026

Sept. 24, 2026

I upgraded my server from Debian 12 to Debian 13. This broke several things one of which was mailman. It is now running 3.3.10-2. The web front end is not usable, it is failing with: django.db.utils.OperationalError: (1054, "Unknown column 'socialaccount_socialapp.provider_id' in 'SELECT'") so I suspect that some mysql tables were not modified. Anyway, until that is fixed I need to be able to do admin work. I have learned how to use the command line mailman-wrapper to add/remove users - great. What I need is the ability to see the posts that are held for moderation and release or remove them. Please what command line incantations should I use to do this ? Thanks in advance. -- 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>

3 5

Re: Restrict the visible mailing lists to the current domain? – SOLVED
by H.-Dirk Schmitt Sept. 20, 2026

Sept. 20, 2026

Am Sonntag, dem 20.09.2026 um 09:01 -0700 schrieb Mark Sapiro: > On 9/20/26 08:38, dirk(a)computer42.org wrote: > > > > my mailman instance is hosting mailing lists for different domains. > > How can I restrict the visible mailing lists to only the mailing > > list of the current domain. > > Set `FILTER_VHOST = True` in your `settings` file. > Thanks – this setting fixed my problem. IMHO it is undocumented in https://docs.mailman3.org/en/latest/ Best Regards, H.-Dirk Schmitt -- H.-Dirk Schmitt Dipl.Math. eMail:dirk.schmitt@computer42.org mobile:+49 177 616 8564 Signal:+221 786 084 539 Schillerstr. 42, D-53489 Sinzig pgp: http://www.computer42.org/~dirk/OpenPGP-fingerprint.html

3 2

Restrict the visible mailing lists to the current domain?
by dirk＠computer42.org Sept. 20, 2026

Sept. 20, 2026

Hi! my mailman instance is hosting mailing lists for different domains. How can I restrict the visible mailing lists to only the mailing list of the current domain. See e.g. https://lists.weg-der-sterne.de/mailman3/postorius/lists/ or https://lists.computer42.org/mailman3/postorius/lists/ Both web sites are displaying all public lists – also from the „foreign“ domain. Best regards, H.-Dirk Schmitt

2 1

Password reset pages render without Mailman/Postorius styling
by Henrik Rasmussen Sept. 16, 2026

Sept. 16, 2026

Hello, I have recently deployed a completely new Mailman installation and noticed what appears to be a UI/template issue. Before opening a bug report, I would like to understand whether this is expected behaviour or a known issue. Environment: Mailman Core 3.3.10 mailman-web (maxking/mailman-web container) Python 3.12 django-allauth 65.0.2 This is a fresh installation on a new server. No upgrade has been performed from a previous Mailman installation, and the issue is present before any production data has been migrated. The site itself uses the normal Postorius and HyperKitty layout and branding. Pages such as: /postorius/ /postorius/lists/ render correctly and use the expected Mailman/Postorius styling. Login also works correctly. The issue is limited to the following pages: /accounts/password/reset/done/ /accounts/password/reset/key/done/ The functionality works as expected, but the pages are rendered with a very minimal layout that appears to come directly from django-allauth. For example, the page only displays content similar to: ================== Menu: Log in Sign up Password Reset We have sent you an email. If you have not received it please check your spam folder... ================== The pages do not appear to use the same theme or styling as the rest of the Mailman/Postorius interface. Investigation: The application is configured with: LOGIN_REDIRECT_URL = "list_index" and: reverse("list_index") -> "/postorius/lists/" Django resolves the password reset template to: /usr/lib/python3.12/site-packages/allauth/templates/account/password_reset_done.html This template extends: account/base_entrance.html which in turn extends: allauth/layouts/entrance.html The template origins reported by Django are: get_template("account/password_reset_done.html").origin → /usr/lib/python3.12/site-packages/allauth/templates/account/password_reset_done.html get_template("allauth/layouts/entrance.html").origin → /usr/lib/python3.12/site-packages/allauth/templates/allauth/layouts/entrance.html Question: Is it expected that these password reset completion pages are rendered using the default django-allauth templates instead of the Mailman/Postorius theme? Or is there a missing template override in the current mailman-web container image? If this is expected behaviour, is there a recommended way to make these pages use the same layout as the rest of the Mailman/Postorius user interface? Best regards, Henrik

2 1

mailman changeaddress -h weirdness
by Washington Odhiambo Sept. 9, 2026

Sept. 9, 2026

ENV: Mailman Core Version = GNU Mailman 3.3.11b1 (Tom Sawyer) Mailman Core API Version = 3.1 Mailman Core Python Version = 3.11.2 (main, May 12 2026, 05:17:27) [GCC 12.2.0] A member requested to be subscribed to a list through the normal process (confirm and approve). I approved. Shortly after, I received an email they sent to one of the moderators requesting that their subscribed address be changed from the OLD to the NEW(ly subscribed) one. So I deleted the new address via Postorius. I went to the CLI and dis: ``` (venv) mailman@eu:~$ mailman changeaddress REDACTED(a)gmail.com kevin@ [REDACTED] Usage: mailman changeaddress [OPTIONS] OLD_ADDRESS NEW_ADDRESS Try 'mailman changeaddress -h' for help. Error: Address kevin@[REDACTED already exists; can't change. (venv) mailman@eu:~$ ``` Since I had deleted the newly subscribed member, this surprised me. I checked again and they were not found among members. Then I checked under non-members and found the new address there. I then deleted it again. Back to the CLI, Same error. Then I did: (venv) mailman@eu:~$ mailman findmember kevin@[REDACTED] (venv) mailman@eu:~$ That returned empty. I went into Django Admin US and searched for - and found the address still in there. I deleted it again. Back to the CLI to change the address, same error - the address still exists. I am stumped. Oh, and maybe we should have that changeaddress option in Postorius as well? -- Best regards, Odhiambo WASHINGTON, Nairobi,KE +254 7 3200 0004/+254 7 2274 3223 In an Internet failure case, the #1 suspect is a constant: DNS. "Oh, the cruft.", egrep -v '^$|^.*#' ¯\_(ツ)_/¯ :-) [How to ask smart questions: http://www.catb.org/~esr/faqs/smart-questions.html]

2 3

How to Choose the Best SMTP Relay Service Provider for Mailman?
by brucewilson3011＠gmail.com Sept. 3, 2026

Sept. 3, 2026

Reliable mailing-list delivery depends on much more than simply connecting Mailman to an SMTP server. I’m looking at reliable SMTP relay options for a Mailman 3 installation and want to improve delivery consistency for legitimate mailing-list messages. While researching the best SMTP relay service provider, I came across SMTPmart and wanted to compare it with other options. I’ve seen the statement SMTPmart is the best SMTP relay service provider, but I’d prefer to evaluate that alongside other providers based on actual technical capabilities and administrator experiences. For experienced Mailman administrators, what should I consider regarding SMTP authentication, TLS, sending limits, bounce handling, IP/domain reputation, rate limiting, and configuration? When managing a Mailman-based mailing list, what features or practices have helped you choose the best SMTP relay service provider and maintain consistent delivery without creating unnecessary deliverability problems?

7 9

How to upgrade venv to python3.14?
by Christian H. Kuhn Aug. 20, 2026

Aug. 20, 2026

Hi all, after upgrade from Ubuntu 25.10 (python3.13) to 26.04(python3.14) and root@bywater ~ # python3 -m venv /opt/mailman/venv/ minutely: Traceback (most recent call last): File "/opt/mailman/venv/bin/mailman-web", line 3, in <module> from mailman_web.manage import main ModuleNotFoundError: No module named 'mailman_web' root@bywater /opt/mailman/venv/bin # ll mailm* -rwxr-xr-x 1 mailman www-data 204 Nov 5 2025 mailman* -rwxr-xr-x 1 mailman www-data 203 Nov 5 2025 mailman-web* root@bywater ~ # lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 26.04 LTS Release: 26.04 Codename: resolute root@bywater ~ # dpkg -l python3 ┌── Desired=Unknown/Install/Remove/Purge/Hold │┌─ Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend ││┌ Err?=(none)/Reinst-required (Status,Err: uppercase=bad) │││ Name Version Architecture Description ├┼┼─══════════════─═══════════════─════════════─═══════════════════════════════════════════════════════════════════════> ii python3 3.14.3-0ubuntu2 amd64 interactive high-level object-oriented language (default python3 versio> root@bywater /opt/mailman/venv/lib/python3.14/site-packages # ll total 16 drwxr-x--- 4 root root 4096 Aug 13 15:09 ./ drwxr-x--- 3 root root 4096 Aug 13 15:09 ../ drwxr-x--- 5 root root 4096 Aug 13 15:09 pip/ drwxr-x--- 3 root root 4096 Aug 13 15:09 pip-25.1.1.dist-info/ In an older thread (Deb11 -> Deb12), i found: (venv) mailman@bywater:~$ pip install --force-reinstall mailman Traceback (most recent call last): File "/opt/mailman/venv/bin/pip", line 5, in <module> from pip._internal.cli.main import main ModuleNotFoundError: No module named 'pip' I'm a bit stuck here. I usually do not work with python, so i do not know how to proceed. Any hints? TIA QNo

3 2

hyperkitty not archiving new mail
by Jaldhar H. Vyas Aug. 18, 2026

Aug. 18, 2026

Hello all, Mailman 3.3.10 on Debian 13. I recently upgraded from a well-running installation of Mailman2. Importing the existing mailing lists went well but I'm having problems with hyperkitty. First it was complaining that I didn't have a valid SSL certificate for localhost. I rectified that but in the mean time I ended up with some .pck files in /var/lib/mailman3/archives/hyperkitty/spool . Inspecting these with mailman-wrapper qfile reveals that they are messages which have been sent since the import. How do I reindex just those messages? I tried update_index and rebuild_index but apart from taking forever, they don't seem to help.

2 4

urls.py location on venv install
by Torsten Aug. 12, 2026

Aug. 12, 2026

Hey all together, I have just nearly finished the migration of Mailman 3 from Debian packages to venv and mailman (master and runner) is up and running and uwsgi is also up and running. Just when I go to the web page https://<mydomain.tld>/mailman3 I get a server error and looking at the mailman web log I see that the ROOT_URLCONF seems to be missing. Following this thread: https://lists.mailman3.org/archives/list/mailman-users@mailman3.org/thread/… I added urls.py to /etc/mailman3 together with the other configuration files (settings.py, mailman.cfg and uwsgi.ini) and have added ROOT_URLCONF = 'urls' to /etc/settings.py but after restarting mailman (core) and mailman (web) the error is still there. What am I missing? TIA Torsten

4 16

List Message Acceptance and Spam Filtering
by Washington Odhiambo Aug. 12, 2026

Aug. 12, 2026

Hello Admins, I am running MM3 3.3.11b3. The issue at hand also applies to 3.3.10. In my list setting, I have set "Default action to take when a non-member posts to the list" = Discard (no notification). In /etc/mailman3/mailman.cfg I have: [antispam] header_checks: X-Spam-Score: ^[4-9]\. Authentication-Results: dkim=neutral jump_chain: hold I am running rspamd on the host for Spam filtering. Now, I have a number of spam being sent to the list by non-members. The antispam rule in mailman.cfg matches and holds the email for moderation. I am failing to wrap my head around this behaviour. I was expecting that: 1. Any posts from non-members would be discarded 2. Mail classified as spam (from members) would be held for inspection by the list administrator. Can someone please help me untangle my thinking? -- Best regards, Odhiambo WASHINGTON, Nairobi,KE +254 7 3200 0004/+254 7 2274 3223 In an Internet failure case, the #1 suspect is a constant: DNS. "Oh, the cruft.", egrep -v '^$|^.*#' ¯\_(ツ)_/¯ :-) [How to ask smart questions: http://www.catb.org/~esr/faqs/smart-questions.html]

2 1

Authentication of posts to a Mailman installation
by Steve Brown Aug. 12, 2026

Aug. 12, 2026

I have a suspect post that appears to be from a member but has a link to a potential scam site. I am not knowledgeable about spoofed addresses in the header; can a hacker simply put someone else's address somewhere in the header and have the message accepted if that address appears in the list of members? Steve Brown, administrator of a small list.

4 5

Re: Thank you for the tips a year ago! Please help me gather other use-cases
by Archie Singh Aug. 7, 2026

Aug. 7, 2026

Hello, I am glad you asked these questions, as this can help anyone who will later wish to use the dynamic sublists feature for team collaboration when it is merged into Mailman 3. What does your suggested implementation look like? Would it be something > like main+sub-topic(a)example.com which would create a sub list called > “sub-topic” with inherited permissions from “main”? > Your guess is actually very close because a user will send a mail to a special alias, in your case main-new(a)example.com (with the -new command as a suffix to the parent list main(a)example.com) Then Mailman takes the message-ID, generates a database serial number, and using Base32 encoding generates a unique address for the child list (e.g., main-ab(a)example.com) And indeed because the child list is linked in the database via the parent_id, it inherits its settings from the parent list itself. What would that bring on top of including [sub-topic] in the subject or > body? It reduces inbox flooding :) When you use a subject tag on a mailing list it still follows the broadcast model; if a specific thread for troubleshooting or a specific project gets more replies, every single person on the main list will receive that many emails regardless of whether it was relevant to them or not. And thus, dynamic sublists is an opt-in thread model; the -new email is broadcast both to the main list (main(a)example.com) and the newly made child list ( main-ab(a)example.com) Mailman will send a separate announcement to the main list containing the -join and -leave addresses for the new child list. Also, the creator is automatically subscribed to the new child list and anyone else who is interested can opt-in. All the incoming replies from then on are routed to the child list. > I’m glad our little exchange on the MM3 list was helpful. A great example > of the power of searchable archives of such exchanges. Indeed :D Thanks again! Regards Archie On Fri, Aug 7, 2026 at 4:55 PM Rodrigo Camacho <rodrigo(a)vitz.fr> wrote: > > > > On 7 Aug 2026, at 13:09, Archie Singh <archie.singh2610(a)gmail.com> > wrote: > > > > I am Archie, a Google Summer of Code contributor for GNU Mailman and I > am working on implementing Dynamic Sublists, a type of conversation/thread > model into MM3. > > This sounds like a way to group a set of threads together through a > dynamically created list. > Today a similar result can be obtained (and often is) by adding something > like [UNIQUE ID OF TOPIC] to the subject or even the body of a set of > threads sent to one list. > > What does your suggested implementation look like? Would it be something > like main+sub-topic(a)example.com which would create a sub list called > “sub-topic” with inherited permissions from “main”? > What would that bring on top of including [sub-topic] in the subject or > body? > > > I wanted to let you know that your entire discussion thread was > something I wrote a blog about to explain (dated: 5th May 2026, > https://archiegnumailman.hashnode.dev/a-foundational-approach-to-replacing-…) > one of the use-cases of dynamic sublists and in fact if this feature was > present earlier in Mailman 3 you would have been able to utilize it for > your work :D > > I’m glad our little exchange on the MM3 list was helpful. A great example > of the power of searchable archives of such exchanges.

1 0

New attack in progress
by Paul Tomblin Aug. 5, 2026

Aug. 5, 2026

Judging by the bounce messages I’m seeing, somebody or somebodies are trying to sign up for accounts on my Mailman instance using fake email addresses. Can’t imagine what the end game is, other than annoying people with “please confirm your email address” emails when they use a real address. -- Paul Tomblin

5 4

Mass change Digest delivery mode
by iMark Aug. 5, 2026

Aug. 5, 2026

Hi All, Using the Mailman shell, can the delivery mode of Digests be changed to 'Plain text' for all users on just one list ? If it is, could someone tell me how that's done. Thanks, iMark

4 11

How can we solve ZoneInfoNotFoundError
by Markus Grandpré Aug. 5, 2026

Aug. 5, 2026

Dear list members A user of our Mailman system reports having trouble logging in to access a mailing list archive. In the error messages that the Mailman system sends via email, we find: ... Internal Server Error: /mailman3/accounts/login/ ZoneInfoNotFoundError at /accounts/login/ 'No time zone found with key US/Eastern' Request Method: POST Request URL: https://mailman.uni-konstanz.de/mailman3/accounts/login/ Django Version: 4.2.28 Python Executable: /usr/bin/uwsgi-core Python Version: 3.13.5 ... Exception Type: ZoneInfoNotFoundError at /accounts/login/ Exception Value: 'No time zone found with key US/Eastern' Raised during: allauth.account.views.LoginView Request information: USER: **** GET: No GET data POST: csrfmiddlewaretoken = 'E6IT1iObdZYMyGKUgAHSxJ6LCzSZPDOKZmgVCaN9Kaae3s5gJy75Dwh8ptWjzcdI' login = '****' password = '****' next = '/mailman3/hyperkitty/list/basex-talk(a)mailman.uni-konstanz.de/' FILES: No FILES data COOKIES: csrftoken = '********************' ... (full error stack is attached to this email) Is there a server-side solution available for our GNU Mailman system 3.3.10 (Tom Sawyer), which runs on Debian GNU/Linux 13 (trixie)? Best regards, Markus Grandpré -- Markus Grandpré (he/him) Universität Konstanz Kommunikations-, Informations- und Medienzentrum (KIM) Abteilung IT-Dienste Forschung, Lehre und Infrastruktur Sachgebiet Diensteadministration 78457 Konstanz Tel: +49 7531 88-4342D

3 6

Mailman 3.3.4 logging behaviour, mixed log formats, and REST API error
by Henrik Rasmussen Aug. 4, 2026

Aug. 4, 2026

Hello, I have been chatting with Copilot AI for some days to get help investigating some logging-related issues in a Mailman 3.3.4 Docker installation and, so I would appreciate any guidance. We are working on a long needed upgrade, but for now I need the logs in Elasticsearch, and they are aweful. Environment * GNU Mailman 3.3.4 (Tom Sawyer) * Python 3.8.10 * Docker-based installation * Test environment with a single mailing list: listname(a)example.com<mailto:listname@example.com> Logging configuration I've configured dedicated log files for most logging channels. For example, [logging.http] is configured with format: %(asctime)s (%(process)d) %(message)s, datefmt: %Y-%m-%d %H:%M:%S.%3N, propagate: no, level: debug, and path: http.log. All [logging.*] sections in the generated /etc/mailman-extra.cfg use the same datefmt. format: %(asctime)s (%(process)d) %(message)s datefmt: %Y-%m-%d %H:%M:%S.%3N propagate: no level: info path: mailman.log [logging.archiver] format: %(asctime)s (%(process)d) %(message)s datefmt: %Y-%m-%d %H:%M:%S.%3N propagate: no level: debug path: archiver.log [logging.bounce] format: %(asctime)s (%(process)d) %(message)s datefmt: %Y-%m-%d %H:%M:%S.%3N propagate: no level: debug path: bounce.log [logging.config] format: %(asctime)s (%(process)d) %(message)s datefmt: %Y-%m-%d %H:%M:%S.%3N propagate: no level: debug path: config.log [logging.database] format: %(asctime)s (%(process)d) %(message)s datefmt: %Y-%m-%d %H:%M:%S.%3N propagate: no level: debug path: database.log [logging.debug] format: %(asctime)s (%(process)d) %(message)s datefmt: %Y-%m-%d %H:%M:%S.%3N propagate: no level: debug path: debug.log [logging.error] format: %(asctime)s (%(process)d) %(message)s datefmt: %Y-%m-%d %H:%M:%S.%3N propagate: no level: debug path: error.log [logging.fromusenet] format: %(asctime)s (%(process)d) %(message)s datefmt: %Y-%m-%d %H:%M:%S.%3N propagate: no level: debug path: fromusenet.log [logging.http] format: %(asctime)s (%(process)d) %(message)s datefmt: %Y-%m-%d %H:%M:%S.%3N propagate: no level: debug path: http.log [logging.locks] format: %(asctime)s (%(process)d) %(message)s datefmt: %Y-%m-%d %H:%M:%S.%3N propagate: no level: debug path: locks.log [logging.mischief] format: %(asctime)s (%(process)d) %(message)s datefmt: %Y-%m-%d %H:%M:%S.%3N propagate: no level: debug path: mischief.log [logging.plugins] format: %(asctime)s (%(process)d) %(message)s datefmt: %Y-%m-%d %H:%M:%S.%3N propagate: no level: debug path: plugins.log [logging.runner] format: %(asctime)s (%(process)d) %(message)s datefmt: %Y-%m-%d %H:%M:%S.%3N propagate: no level: info path: runner.log [logging.smtp] format: %(asctime)s (%(process)d) %(message)s datefmt: %Y-%m-%d %H:%M:%S.%3N propagate: no level: info path: smtp.log [logging.smtp-failure] format: %(asctime)s (%(process)d) %(message)s datefmt: %Y-%m-%d %H:%M:%S.%3N propagate: no level: debug path: smtp-failure.log [logging.subscribe] format: %(asctime)s (%(process)d) %(message)s datefmt: %Y-%m-%d %H:%M:%S.%3N propagate: no level: debug path: subscribe.log [logging.vette] format: %(asctime)s (%(process)d) %(message)s datefmt: %Y-%m-%d %H:%M:%S.%3N propagate: no level: debug path: vette.log Issue 1: Mixed log formats Despite configuring all logging sections with datefmt: %Y-%m-%d %H:%M:%S.%3N, I still see multiple timestamp formats in mailman.log, for example: * [30/Jul/2026:12:00:03 +0000] "GET /3.1/lists?count=10&page=1 HTTP/1.1" 200 90 "-" "GNU Mailman REST client v3.3.3" * [2026-07-30 12:32:15 +0000] [36] [INFO] Shutting down: Master * Jul 30 12:32:14 2026 (1) Master watcher caught SIGTERM. Exiting This suggests that multiple logging systems may be writing to the same log file. Issue 2: Runner debug noise With logging level set to debug, mailman.log contains a large number of entries such as: * Jul 31 07:58:12 2026 (33) [PipelineRunner] starting oneloop * Jul 31 07:58:12 2026 (33) [PipelineRunner] ending oneloop: 0 * Jul 31 07:58:12 2026 (26) [ArchiveRunner] starting oneloop * Jul 31 07:58:12 2026 (26) [ArchiveRunner] ending oneloop: 0 * Jul 31 07:58:12 2026 (29) [IncomingRunner] starting oneloop * Jul 31 07:58:12 2026 (29) [IncomingRunner] ending oneloop: 0 * Jul 31 07:58:13 2026 (28) [CommandRunner] starting oneloop * Jul 31 07:58:13 2026 (36) [VirginRunner] starting oneloop * Jul 31 07:58:13 2026 (36) [VirginRunner] ending oneloop: 0 * Jul 31 07:58:13 2026 (28) [CommandRunner] ending oneloop: 0 * Jul 31 07:58:13 2026 (37) [DigestRunner] starting oneloop * Jul 31 07:58:13 2026 (37) [DigestRunner] ending oneloop: 0 * Jul 31 07:58:13 2026 (31) [NNTPRunner] starting oneloop * Jul 31 07:58:13 2026 (32) [OutgoingRunner] starting oneloop * Jul 31 07:58:13 2026 (31) [NNTPRunner] ending oneloop: 0 * Jul 31 07:58:13 2026 (32) [OutgoingRunner] ending oneloop: 0 Is there a recommended way to suppress these internal runner loop messages while retaining useful operational logging? Issue 3: HTTP request logging I intentionally keep [logging.http] at level: debug because I want to see which REST endpoints are called. Examples: * [2026-08-03 12:10:28 +0000] [51] [DEBUG] GET /3.1/lists/listname(a)example.com<mailto:/3.1/lists/listname@example.com> * [2026-08-03 12:15:29 +0000] [52] [DEBUG] GET /3.1/lists/listname(a)example.com<mailto:/3.1/lists/listname@example.com> * [2026-08-03 13:00:03 +0000] [53] [DEBUG] GET /3.1/lists My goal is to keep these request entries. Issue 4: Falcon tracebacks in http.log The same http.log also contains Falcon tracebacks. One example is: 2026-08-03 12:10:29 [FALCON] [ERROR] GET /3.1/lists/listname(a)example.com/config<mailto:/3.1/lists/listname@example.com/config> => Traceback (most recent call last): File "/usr/lib/python3.8/site-packages/sqlalchemy/engine/result.py", line 779, in _getter getter = self._metadata._getter AttributeError: 'NoneType' object has no attribute '_getter' The above exception was the direct cause of the following exception: Traceback (most recent call last): File "/usr/lib/python3.8/site-packages/falcon/app.py", line 361, in call responder(req, resp, **params) File "/usr/lib/python3.8/site-packages/mailman/rest/listconf.py", line 282, in on_get value = getter.get(self._mlist, attribute) File "/usr/lib/python3.8/site-packages/mailman/rest/listconf.py", line 52, in get return sorted(aliases.aliases) File "/usr/lib/python3.8/site-packages/mailman/model/mailinglist.py", line 565, in aliases for alias in aliases File "/usr/lib/python3.8/site-packages/sqlalchemy/orm/loading.py", line 100, in instances cursor.close() File "/usr/lib/python3.8/site-packages/sqlalchemy/util/langhelpers.py", line 68, in exit compat.raise_( File "/usr/lib/python3.8/site-packages/sqlalchemy/util/compat.py", line 182, in raise_ raise exception File "/usr/lib/python3.8/site-packages/sqlalchemy/orm/loading.py", line 58, in instances *[ File "/usr/lib/python3.8/site-packages/sqlalchemy/orm/loading.py", line 59, in query_entity.row_processor(query, context, cursor) File "/usr/lib/python3.8/site-packages/sqlalchemy/orm/query.py", line 4422, in row_processor _instance = loading._instance_processor( File "/usr/lib/python3.8/site-packages/sqlalchemy/orm/loading.py", line 421, in _instance_processor getter = result._getter(col, False) File "/usr/lib/python3.8/site-packages/sqlalchemy/engine/result.py", line 781, in _getter return self._non_result(None, err) File "/usr/lib/python3.8/site-packages/sqlalchemy/engine/result.py", line 1236, in non_result util.raise( File "/usr/lib/python3.8/site-packages/sqlalchemy/util/compat.py", line 182, in raise_ raise exception sqlalchemy.exc.ResourceClosedError: This result object does not return rows. It has been closed automatically. Is it possible to: 1. Continue logging HTTP GET requests to http.log 2. Send Falcon tracebacks and REST API errors to a separate log file At the moment, both request logging and tracebacks appear in the same file. Issue 5: Worker timeout After the traceback above, I consistently see: * [2026-08-03 12:21:29 +0000] [34] [CRITICAL] WORKER TIMEOUT (pid:52) * [2026-08-03 12:21:30 +0000] [53] [INFO] Booting worker with pid: 53 This appears to indicate that the worker handling GET /3.1/lists/listname(a)example.com/config<mailto:/3.1/lists/listname@example.com/config> times out and is restarted. Additional observations error.log contains Mailman Core exceptions such as: (52) deque: subscribe_from_restored Traceback (most recent call last): File "/usr/lib/python3.8/site-packages/mailman/app/workflow.py", line 69, in next return step() File "/usr/lib/python3.8/site-packages/mailman/app/subscriptions.py", line 341, in _step_get_moderator_approval raise StopIteration StopIteration However, the Falcon/REST traceback shown above does not appear in error.log. This suggests that: * error.log receives Mailman Core exceptions. * http.log receives REST API/Falcon exceptions. * The two do not appear to be linked. Questions 1. Is the mixed timestamp formatting expected in Mailman 3.3.4 Docker deployments? 2. Which component produces the starting oneloop / ending oneloop runner messages? 3. Can HTTP request logging and Falcon tracebacks be directed to separate log files? 4. Is ResourceClosedError when accessing GET /3.1/lists/listname(a)example.com/config<mailto:/3.1/lists/listname@example.com/config> a known Mailman 3.3.4 issue? 5. Is there a recommended logging configuration that preserves REST API access logging while reducing runner/debug noise? Thanks in advance. Best regards, Henrik

2 1

Advice on upgrading..
by Stephen Daniel Aug. 4, 2026

Aug. 4, 2026

Mailman 3 people -- I am planning an upgrade for my Mailman 3 system, and I have a couple of questions. I am currently running an old install of Mailman 3.3.5 on Debian Bullseye. Rather than trying to upgrade this now ancient VM, my plan is to create a new VM and perform a fresh install of Mailman 3.3.10 on Debian Trixie. I'd like advice on how to migrate mailing lists and archives from the old install to the new one. Is there a standard procedure? My current implementation uses the Python venv installation method. I'd prefer a more container-focused installation, but since I don't believe Mailman 3 has official container images yet, I plan to continue with the venv approach. Please let me know your thoughts. Thanks! -- Stephen Daniel

4 3

Find a smtp server to send out emails
by Leon Aug. 1, 2026

Aug. 1, 2026

Hi, This problem is not caused by mailman, but I still want to give it a shot here. I'm hosting a mailing list on top of mailman3. Emails are supposed to be sent out by AWS ses. However, ses requires that sender address must be verified, which leads to a problem that emails sent by subscribers to mailing list cannot be sent to other subcirbers, since their addresses are not verified. And it is impossible to verified every subscriber. Are there smtp service providers allowing unverified email address to send out emails, or do I have other solutions? Thanks. -- Best wishes, Leon

4 4

FutureWarning: Use `header_id_prefix` instead
by Andreas Vetter July 28, 2026

July 28, 2026

Hi, after a recent update of the prerequisites using: pip install -U --upgrade-strategy eager mailman postorius django-mailman3 hyperkitty mailman-web I get warnings from the cronjobs: /opt/mailman/venv/lib64/python3.11/site-packages/readme_renderer/ markdown.py:44: FutureWarning: Use `header_id_prefix` instead gfm_extension_options.header_ids = _HEADER_ID_PREFIX What would be the best way to silence the warnings? Google does not find the warning message yet. Cheers, Andreas

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Disable signup-requests for mailman3 via e-mail
by Stefan Bauer July 24, 2026

July 24, 2026

Hi Mailman-Experts, how can i completely disable/block list-signup-requests for specific lists via e-mail? i have some announce-only mailinglists i do not want to allow users to signup at all via e-mail. I'm aware of the subscription policies but there is no block or reject/discard option. Thank you. Stefan

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Shutdown problem
by Lars Bjørndal July 23, 2026

July 23, 2026

Sometimes when I reboot the machine, I experience that mailman doesn't start because the files /opt/mailman3/mm/var/locks/master.lck* isn't deleted during shutdown. Maybe one way to solve this could be to use ExecStartPre directive in the systemd service to remove the lock files. What's the best practice to solve this problem? BTW I've noticed that doing `systemctl stop mailman3` takes a very long time, 45 secs. or something like that. - Mailman 3.3.10 - Python 3.12.13 ``` /etc/systemd/system/mailman3.service [Unit] Description=GNU Mailing List Manager After=syslog.target network.target postgresql.service [Service] Type=forking PIDFile=/opt/mailman3/mm/var/master.pid User=mailman3 Group=mailman3 Environment="MAILMAN_CONFIG_FILE=/etc/mailman3/mailman.cfg" ExecStart=/opt/mailman3/venv/bin/mailman start ExecReload=/opt/mailman3/venv/bin/mailman restart ExecStop=/opt/mailman3/venv/bin/mailman stop # Tested, but have no effect on deletion of the lock file. #Restart=on-failure #RestartSec=15 [Install] WantedBy=multi-user.target ``` Lars

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Using Hyperkitty to Create Archive from mbox file
by jason＠glazer350.com July 16, 2026

July 16, 2026

My web host provider (Dreamhost) is shutting down support for Mailman 2. I am planning on transitioning some of the active mailing lists, but for the older ones, I was hoping to create archives of them. I am considering just making a mirror of the "pipermail" archives, using MHonarc, or trying to use Hyperkitty. I am most impressed by the layout and usability of Hyperkitty archives and would like to go that route if it is not too difficult. What would I need to do to take the mbox archive from a mailing list and convert it into an archive using Hyperkitty? Jason

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Find all mailing lists a user is subscribed to
by Rodolfo Pilas July 10, 2026

July 10, 2026

Hi, I administer a Mailman 3 server with more than 50 mailing lists. All subscribers belong to the same organization. Occasionally I need to answer questions such as: “Which mailing lists is user(a)example.com subscribed to?” At the moment I iterate over every mailing list, list its members, and grep for the email address. It works, but it is inefficient. Is there a supported way (CLI, REST API, or Postorius) to retrieve all the mailing lists a particular email address is subscribed to, without having to inspect every list individually? Rodolfo Pilas

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Odd behavior: notifications for list membership, etc. from "owner user" sent as "owner user"?
by Thomas Ward July 10, 2026

July 10, 2026

Tracing down an issue of "why are we no longer receiving owner notices" such as list membership changes, moderation list items, etc. we are seeing errors in MS365 side of things about "failing to deliver". Upon deeper trackdown of this, our owner user mailman(a)example.com is seeing messages sent to it from @lists.example.com and @distro.example.com from mailman(a)example.com (despite the From in the envelope being list-bounces+mailman=example.com(a)[lists|distro].example.com) Is there any specific reason for this? Is it because the MS365 side is ignoring the Envelope's From address and relying on the actual *from* field which is breaking things because MS365 users are "not allowed to send as [lists|distro].example.com"? This seems highly suspicious if this is the case, and I want to see if there's anything we can do on the Mailman side of things to make this 'work' for the 365 recipient (mailman(a)example.com is a shared mailbox for the IT team in this case, so it's a legitimate user).

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Nested lists possible
by Flo July 10, 2026

July 10, 2026

There are two kind of members of an organization, general and inner ones. There is a list for the inner members and I don't want to duplicate their names in the general list. I have already put the inner list as member of the general list and it works, however, the subject includes both prefixes and there are also both footers. So, the result is not really acceptable. Are there any other possibilities? Thank you in advance for your help. Flo

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Can disabled users enable themself?
by Flo July 9, 2026

July 9, 2026

Hi, users can get disabled if there are too many bounces. Is there an easy possibility for the disabled users to enable themself on their own? I checked the email they get, however, there is no link. Only the owner's email address. What is the solution in such a case? Thank you for the information. Flo

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Re: Why is it VERPing every message?
by Paul Tomblin June 25, 2026

June 25, 2026

On Tue, Jun 23, 2026, at 8:48 PM, Mark Sapiro wrote: > I don't know what the issue is, but even if you have personalization > off, try setting `verp_personalized_deliveries: no` in case there's some > issue there. Ok, that's weird. `mailman conf -s mta` said it was already set to no, but I added it to /etc/mailman3/mailman.cfg and now it's sending in big chunks. Which now RoadRunner is rejecting because of too many recipients in one message instead of too many simultaneous connections. Can't win with these idiots, can I? -- Paul Tomblin

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Mass subscription: HTTP Error 400: 'pathlib._local.PosixPath' object does not support the context manager protocol
by Flo June 24, 2026

June 24, 2026

Hi, Debian trixie, virtualenv installation: When I entered addresses at the mass subscription field I got: HTTP Error 400: 'pathlib._local.PosixPath' object does not support the context manager protocol The addresses were subscribed though. How can I have subscription working correctly? I haven't found anything reasonable on the Internet. Thank you for your help! Flo

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Why is it VERPing every message?
by Paul Tomblin June 24, 2026

June 24, 2026

So i was going down the rabbit hole of why every outgoing message for a certain 500+ member list is being VERPed, which lead to RoadRunner/Spectrum complaining about too many connections, and I tried to look at the verp configuration: (venv) *mailman@mail*:*~*$ mailman conf |grep verp [mta] verp_confirm_format: $address+$cookie [mta] verp_confirm_regexp: ^(.*<)?(?P<addr>[^+]+?)\+(?P<cookie>[^@]+)@.*$ [mta] verp_confirmations: yes [mta] verp_delimiter: + [mta] verp_delivery_interval: 1 [mta] verp_format: ${bounces}+${local}=${domain} [mta] verp_owner_notifications: yes [mta] verp_personalized_deliveries: yes [mta] verp_probe_format: $bounces+$token@$domain [mta] verp_probe_regexp: ^(?P<bounces>[^+]+?)\+(?P<token>[^@]+)@.*$ [mta] verp_probes: no [mta] verp_regexp: ^(?P<bounces>[^+]+?)\+(?P<local>[^=]+)=(?P<domain>[^@]+)@.*$ I'm quite confused about why verp_delivery_interval is 1 instead of the default 0, and why verp_probes is no. I did make sure that "Personalize" was set to None. I tried to override them in mm/var/etc/mailman.cfg, but it seems to be having no effect, even after restarting mailman. Is this not the correct syntax: [mta] verp_delivery_interval: 0 verp_probes: yes Is something else overriding my mailman.cfg setting? I do have a list:member:regular:footer but it doesn't have any user information in it, so that shouldn't cause it to do the messages individually, should it? ----------------------------- This is the ${list_name} mailing list Description: ${description} To unsubscribe send an email to ${list_name}-unsubscribe(a)browncroftna.org This message in the archives is: $hyperkitty_url -- Paul Tomblin

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mailman command line?
by Paul Tomblin June 24, 2026

June 24, 2026

If I type `mailman` with no arguments, I get the whole (venv) *mailman@mail*:*~*$ mailman Usage: mailman [OPTIONS] COMMAND [ARGS]... *a* The GNU Mailman mailing list management system https://www.list.org Options: --version Show the version and exit. --run-as-root Running mailman commands as root is not recommended and mailman will refuse to run as root unless this option is specified. -C, --config FILE Configuration file to use. If not given, the environment variable MAILMAN_CONFIG_FILE is consulted and used if set. If neither are given, a default configuration file is loaded. -h, --help Show this message and exit. --- etc --- But if I type `mailman -h`, as it says in that page, I get a massive stack dump starting with File "/opt/mailman/venv/lib/python3.13/site-packages/click/core.py", line 1161, in __call__ return self.main*(*args, **kwargs)* ~~~~~~~~~*^^^^^^^^^^^^^^^^^* File "/opt/mailman/venv/lib/python3.13/site-packages/click/core.py", line 1081, in main with self.make_context*(prog_name, args, **extra)* as ctx: ~~~~~~~~~~~~~~~~~*^^^^^^^^^^^^^^^^^^^^^^^^^^* File "/opt/mailman/venv/lib/python3.13/site-packages/click/core.py", line 949, in make_context self.parse_args*(ctx, args)* ~~~~~~~~~~~~~~~*^^^^^^^^^^^* and ending with File "/opt/mailman/venv/lib/python3.13/site-packages/mailman/utilities/modules.py", line 181, in find_pluggable_components for name, plugin_config in config.plugin_configs: ^^^^^^^^^^^^^^^^^^^^^ File "/opt/mailman/venv/lib/python3.13/site-packages/mailman/config/config.py", line 291, in plugin_configs plugin_sections = self._config.getByCategory('plugin', []) ^^^^^^^^^^^^^^^^^^^^^^^^^^ AttributeError: 'NoneType' object has no attribute 'getByCategory' (venv) *mailman@mail*:*~*$ mailman --version GNU Mailman 3.3.11b1 (Tom Sawyer) -- Paul Tomblin

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Server error,An error occurred while processing your request. - SITE_ID
by Flo June 23, 2026

June 23, 2026

Hi, I did the virtualenv installation on Debian trixie. I got mailmanweb running, created a superuser, could login into https://my.site.net/admin (after resolving CSRF errors). I created a new site (my.site.net) in Django, deleted example.com and changed SITE_ID to 0 in /etc/mailman3/settings.py . After restarting mailman3 and mailmanweb services I get Server error,An error occurred while processing your request. when I call https://my.site.net/admin again. Even if I change SITE_ID back to 1 there is no change. What have I done wrong? I haven't found any solution on the internet. And, even more important, how get I get it working again? Thank you for your help. Flo.

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postfix_lmtp doesn't exist
by Flo June 17, 2026

June 17, 2026

Dear all, I am running Debian Trixie with Postfix. Now I want to install Mailman via virtualenv. All looks fine so far but when I insert transport_maps = hash:/home/mailman_var/data/postfix_lmtp local_recipient_maps = hash:/home/mailman_var/data/postfix_lmtp relay_domains = hash:/home/mailman_var/data/postfix_domains to main.cf I get an error when sending emails. Understandable, because there is no postfix_lmtp available. When will it be created? I haven't observed any error at the installation up to that point. Thanks for your help, Flo PS: I changed var_dir to /home/mailman_var because I thought data should be better at the home partition, especially as I was afraid they might take a lot of space and there is not a lot available at the root partition. I don't know if this is a good idea.

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Possibly more a Postfix question than a mailman one one but...
by Paul Tomblin June 15, 2026

June 15, 2026

I want to limit the number of simultanous connections for one domain that I send email to. According ot what i've managed to find on-line, I need to put in a transport map in Postfix for that. But Mailman appears to already be using the transport map for routing incoming mail: > > transport_maps = > hash:/opt/mailman/mm/var/data/postfix_lmtp > local_recipient_maps = > proxy:unix:passwd.byname, $alias_maps, hash:/opt/mailman/mm/var/data/postfix_lmtp > relay_domains = > hash:/opt/mailman/mm/var/data/postfix_domains Can i append or pre-pend another transport file in the transport_maps listing and put in the entry for this domain that's been bouncing people off my list because of too many simultaneous connections? -- Paul Tomblin

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Why aren't I getting bounce texts any more?
by Paul Tomblin June 9, 2026

June 9, 2026

I swear I used to get the exactly text of the bounce message when email to a list member bounced, but I'm not seeing it any more. Is there a setting I've overlooked? I've turned on "*Notify owner on bounce increment"* which was off for some reason. I just had 24 users bounced off a mailing list this morning for excessive bounces, and I can only think their ISP suddenly took exception to my setup somehow. It would have been nice to have to a warning when the first bounce happened. -- Paul Tomblin

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