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

Block members from sending cc's and bcc's
by Cathryn McGuire Nov. 7, 2025

Nov. 7, 2025

Hi everyone, Using Mailman 3 with Affinity web interface and we want to stop our members from sending to cc: or bcc: We've found the Header Filter and cc and bcc appear in it. Tried to configure it to "hold for moderation," but it hasn't worked. Partly because we don't understand what to put in the Pattern input box. I put in cc: because it requires something. Can anyone advise? Cheers, Cathryn

3 21

Cannot Install Web UI
by Dennis Putnam Nov. 2, 2025

Nov. 2, 2025

I'm trying to install the web UI for mailman3. I am getting the following failure. Can someone help? TIA. (venv) mailman :~$ pip install mailman-web mailman-hyperkitty Collecting mailman-web Downloading mailman_web-0.0.9-py3-none-any.whl.metadata (3.2 kB) Collecting mailman-hyperkitty Downloading mailman-hyperkitty-1.2.1.tar.gz (22 kB) Preparing metadata (setup.py) ... done Collecting django<4.3,>=4.0 (from mailman-web) Downloading django-4.2.25-py3-none-any.whl.metadata (4.2 kB) Collecting hyperkitty (from mailman-web) Downloading hyperkitty-1.3.12-py3-none-any.whl.metadata (3.6 kB) Collecting postorius (from mailman-web) Downloading postorius-1.3.13-py3-none-any.whl.metadata (2.9 kB) Collecting whoosh (from mailman-web) Downloading Whoosh-2.7.4-py2.py3-none-any.whl.metadata (3.1 kB) Requirement already satisfied: mailman in ./venv/lib/python3.12/site-packages (from mailman-hyperkitty) (3.3.10) Requirement already satisfied: requests in ./venv/lib/python3.12/site-packages (from mailman-hyperkitty) (2.32.5) Requirement already satisfied: zope.interface in ./venv/lib/python3.12/site-packages (from mailman-hyperkitty) (8.0.1) Requirement already satisfied: asgiref<4,>=3.6.0 in ./venv/lib/python3.12/site-packages (from django<4.3,>=4.0->mailman- web) (3.10.0) Requirement already satisfied: sqlparse>=0.3.1 in ./venv/lib/python3.12/site-packages (from django<4.3,>=4.0->mailman-we b) (0.5.3) Collecting django-compressor>=1.3 (from hyperkitty->mailman-web) Downloading django_compressor-4.5.1-py2.py3-none-any.whl.metadata (5.0 kB) Collecting django-extensions>=1.3.7 (from hyperkitty->mailman-web) Downloading django_extensions-4.1-py3-none-any.whl.metadata (6.1 kB) Collecting django-gravatar2>=1.0.6 (from hyperkitty->mailman-web) Downloading django_gravatar2-1.4.5-py2.py3-none-any.whl.metadata (4.3 kB) Collecting django-haystack>=2.8.0 (from hyperkitty->mailman-web) Downloading django_haystack-3.3.0.tar.gz (467 kB) ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 467.3/467.3 kB 3.8 MB/s eta 0:00:00 Installing build dependencies ... done Getting requirements to build wheel ... done Preparing metadata (pyproject.toml) ... done Collecting django-q2>=1.0.0 (from hyperkitty->mailman-web) Downloading django_q2-1.8.0-py3-none-any.whl.metadata (9.5 kB) Collecting django_mailman3>=1.3.13 (from hyperkitty->mailman-web) Downloading django_mailman3-1.3.15-py3-none-any.whl.metadata (5.4 kB) Collecting djangorestframework>=3.0.0 (from hyperkitty->mailman-web) Downloading djangorestframework-3.16.1-py3-none-any.whl.metadata (11 kB) Requirement already satisfied: flufl.lock>=4.0 in ./venv/lib/python3.12/site-packages (from hyperkitty->mailman-web) (8. 2.0) Collecting mailmanclient>=3.3.3 (from hyperkitty->mailman-web) Downloading mailmanclient-3.3.5.tar.gz (89 kB) ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 89.6/89.6 kB 1.2 MB/s eta 0:00:00 Preparing metadata (setup.py) ... done Collecting mistune>=3.0 (from hyperkitty->mailman-web) Downloading mistune-3.1.4-py3-none-any.whl.metadata (1.8 kB) Collecting networkx>=2.0 (from hyperkitty->mailman-web) Downloading networkx-3.5-py3-none-any.whl.metadata (6.3 kB) Requirement already satisfied: python-dateutil>=2.0 in ./venv/lib/python3.12/site-packages (from hyperkitty->mailman-web ) (2.9.0.post0) Collecting robot-detection>=0.3 (from hyperkitty->mailman-web) Downloading robot-detection-0.4.tar.gz (6.4 kB) Preparing metadata (setup.py) ... done Requirement already satisfied: aiosmtpd>=1.4.3 in ./venv/lib/python3.12/site-packages (from mailman->mailman-hyperkitty) (1.4.6) Requirement already satisfied: alembic!=1.7.0,>=1.6.2 in ./venv/lib/python3.12/site-packages (from mailman->mailman-hype rkitty) (1.17.0) Requirement already satisfied: atpublic in ./venv/lib/python3.12/site-packages (from mailman->mailman-hyperkitty) (6.0.2 ) Requirement already satisfied: authheaders>=0.16 in ./venv/lib/python3.12/site-packages (from mailman->mailman-hyperkitt y) (0.16.3) Requirement already satisfied: authres>=1.0.1 in ./venv/lib/python3.12/site-packages (from mailman->mailman-hyperkitty) (1.2.0) Requirement already satisfied: click>=8.0.0 in ./venv/lib/python3.12/site-packages (from mailman->mailman-hyperkitty) (8 .3.0) Requirement already satisfied: dnspython>=1.14.0 in ./venv/lib/python3.12/site-packages (from mailman->mailman-hyperkitt y) (2.8.0) Requirement already satisfied: falcon>=3.1.3 in ./venv/lib/python3.12/site-packages (from mailman->mailman-hyperkitty) ( 4.1.0) Requirement already satisfied: flufl.bounce>=4.0 in ./venv/lib/python3.12/site-packages (from mailman->mailman-hyperkitt y) (4.0) Requirement already satisfied: flufl.i18n>=3.2 in ./venv/lib/python3.12/site-packages (from mailman->mailman-hyperkitty) (5.2.0) Requirement already satisfied: gunicorn in ./venv/lib/python3.12/site-packages (from mailman->mailman-hyperkitty) (23.0. 0) Requirement already satisfied: lazr.config in ./venv/lib/python3.12/site-packages (from mailman->mailman-hyperkitty) (3. 1) Requirement already satisfied: passlib in ./venv/lib/python3.12/site-packages (from mailman->mailman-hyperkitty) (1.7.4) Requirement already satisfied: sqlalchemy>=1.4.0 in ./venv/lib/python3.12/site-packages (from mailman->mailman-hyperkitt y) (2.0.44) Requirement already satisfied: zope.component in ./venv/lib/python3.12/site-packages (from mailman->mailman-hyperkitty) (7.0) Requirement already satisfied: zope.configuration in ./venv/lib/python3.12/site-packages (from mailman->mailman-hyperkit ty) (7.0) Requirement already satisfied: zope.event in ./venv/lib/python3.12/site-packages (from mailman->mailman-hyperkitty) (6.0 ) Collecting readme_renderer[md] (from postorius->mailman-web) Downloading readme_renderer-44.0-py3-none-any.whl.metadata (2.8 kB) Requirement already satisfied: charset_normalizer<4,>=2 in ./venv/lib/python3.12/site-packages (from requests->mailman-h yperkitty) (3.4.4) Requirement already satisfied: idna<4,>=2.5 in ./venv/lib/python3.12/site-packages (from requests->mailman-hyperkitty) ( 3.11) Requirement already satisfied: urllib3<3,>=1.21.1 in ./venv/lib/python3.12/site-packages (from requests->mailman-hyperki tty) (2.5.0) Requirement already satisfied: certifi>=2017.4.17 in ./venv/lib/python3.12/site-packages (from requests->mailman-hyperki tty) (2025.10.5) Requirement already satisfied: attrs in ./venv/lib/python3.12/site-packages (from aiosmtpd>=1.4.3->mailman->mailman-hype rkitty) (25.4.0) Requirement already satisfied: Mako in ./venv/lib/python3.12/site-packages (from alembic!=1.7.0,>=1.6.2->mailman->mailma n-hyperkitty) (1.3.10) Requirement already satisfied: typing-extensions>=4.12 in ./venv/lib/python3.12/site-packages (from alembic!=1.7.0,>=1.6 .2->mailman->mailman-hyperkitty) (4.15.0) Requirement already satisfied: dkimpy>=0.7.1 in ./venv/lib/python3.12/site-packages (from authheaders>=0.16->mailman->ma ilman-hyperkitty) (1.1.8) Requirement already satisfied: publicsuffix2 in ./venv/lib/python3.12/site-packages (from authheaders>=0.16->mailman->ma ilman-hyperkitty) (2.20191221) Collecting django-appconf>=1.0.3 (from django-compressor>=1.3->hyperkitty->mailman-web) Downloading django_appconf-1.1.0-py3-none-any.whl.metadata (5.2 kB) Collecting rcssmin==1.1.2 (from django-compressor>=1.3->hyperkitty->mailman-web) Downloading rcssmin-1.1.2-cp312-cp312-manylinux1_x86_64.whl.metadata (4.5 kB) Collecting rjsmin==1.2.2 (from django-compressor>=1.3->hyperkitty->mailman-web) Downloading rjsmin-1.2.2-cp312-cp312-manylinux1_x86_64.whl.metadata (4.4 kB) Requirement already satisfied: packaging in ./venv/lib/python3.12/site-packages (from django-haystack>=2.8.0->hyperkitty ->mailman-web) (25.0) Collecting django-allauth>=0.63 (from django-allauth[openid,socialaccount]>=0.63->django_mailman3>=1.3.13->hyperkitty->m ailman-web) Downloading django_allauth-65.12.1.tar.gz (2.0 MB) ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 2.0/2.0 MB 7.1 MB/s eta 0:00:00 Installing build dependencies ... done Getting requirements to build wheel ... done Preparing metadata (pyproject.toml) ... done Collecting django-picklefield<4.0,>=3.1 (from django-q2>=1.0.0->hyperkitty->mailman-web) Downloading django_picklefield-3.3-py3-none-any.whl.metadata (12 kB) Requirement already satisfied: psutil in ./venv/lib/python3.12/site-packages (from flufl.lock>=4.0->hyperkitty->mailman- web) (7.1.0) Requirement already satisfied: six>=1.5 in ./venv/lib/python3.12/site-packages (from python-dateutil>=2.0->hyperkitty->m ailman-web) (1.17.0) Requirement already satisfied: greenlet>=1 in ./venv/lib/python3.12/site-packages (from sqlalchemy>=1.4.0->mailman->mail man-hyperkitty) (3.2.4) Requirement already satisfied: setuptools in ./venv/lib/python3.12/site-packages (from lazr.config->mailman->mailman-hyp erkitty) (80.9.0) Requirement already satisfied: lazr.delegates in ./venv/lib/python3.12/site-packages (from lazr.config->mailman->mailman -hyperkitty) (2.1.1) Collecting nh3>=0.2.14 (from readme_renderer[md]->postorius->mailman-web) Downloading nh3-0.3.1-cp38-abi3-manylinux_2_17_x86_64.manylinux2014_x86_64.whl.metadata (466 bytes) Collecting docutils>=0.21.2 (from readme_renderer[md]->postorius->mailman-web) Downloading docutils-0.22.2-py3-none-any.whl.metadata (15 kB) Collecting Pygments>=2.5.1 (from readme_renderer[md]->postorius->mailman-web) Downloading pygments-2.19.2-py3-none-any.whl.metadata (2.5 kB) Collecting cmarkgfm>=0.8.0 (from readme_renderer[md]->postorius->mailman-web) Downloading cmarkgfm-2025.10.20.tar.gz (145 kB) ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 145.8/145.8 kB 2.2 MB/s eta 0:00:00 Installing build dependencies ... done Getting requirements to build wheel ... error error: subprocess-exited-with-error × Getting requirements to build wheel did not run successfully. │ exit code: 1 ╰─> [41 lines of output] Traceback (most recent call last): File "/opt/mailman/venv/lib/python3.12/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", li ne 353, in <module> main() File "/opt/mailman/venv/lib/python3.12/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", li ne 335, in main json_out['return_val'] = hook(**hook_input['kwargs']) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/opt/mailman/venv/lib/python3.12/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", li ne 118, in get_requires_for_build_wheel return hook(config_settings) ^^^^^^^^^^^^^^^^^^^^^ File "/tmp/pip-build-env-uf_5f2aq/overlay/lib/python3.12/site-packages/setuptools/build_meta.py", line 331, in g et_requires_for_build_wheel return self._get_build_requires(config_settings, requirements=[]) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/tmp/pip-build-env-uf_5f2aq/overlay/lib/python3.12/site-packages/setuptools/build_meta.py", line 301, in _ get_build_requires self.run_setup() File "/tmp/pip-build-env-uf_5f2aq/overlay/lib/python3.12/site-packages/setuptools/build_meta.py", line 317, in r un_setup exec(code, locals()) File "<string>", line 5, in <module> File "/tmp/pip-build-env-uf_5f2aq/overlay/lib/python3.12/site-packages/setuptools/__init__.py", line 115, in set up return distutils.core.setup(**attrs) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/tmp/pip-build-env-uf_5f2aq/overlay/lib/python3.12/site-packages/setuptools/_distutils/core.py", line 148, in setup _setup_distribution = dist = klass(attrs) ^^^^^^^^^^^^ File "/tmp/pip-build-env-uf_5f2aq/overlay/lib/python3.12/site-packages/setuptools/dist.py", line 321, in __init_ _ _Distribution.__init__(self, dist_attrs) File "/tmp/pip-build-env-uf_5f2aq/overlay/lib/python3.12/site-packages/setuptools/_distutils/dist.py", line 309, in __init__ self.finalize_options() File "/tmp/pip-build-env-uf_5f2aq/overlay/lib/python3.12/site-packages/setuptools/dist.py", line 784, in finaliz e_options ep(self) File "/tmp/pip-build-env-uf_5f2aq/overlay/lib/python3.12/site-packages/setuptools/dist.py", line 804, in _finali ze_setup_keywords ep.load()(self, ep.name, value) File "/tmp/pip-build-env-uf_5f2aq/overlay/lib/python3.12/site-packages/cffi/setuptools_ext.py", line 229, in cff i_modules add_cffi_module(dist, cffi_module) File "/tmp/pip-build-env-uf_5f2aq/overlay/lib/python3.12/site-packages/cffi/setuptools_ext.py", line 50, in add_ cffi_module execfile(build_file_name, mod_vars) File "/tmp/pip-build-env-uf_5f2aq/overlay/lib/python3.12/site-packages/cffi/setuptools_ext.py", line 26, in exec file exec(code, glob, glob) File "src/cmarkgfm/build_cmark.py", line 21, in <module> with open(CMARK_DEF_H_PATH, encoding='utf-8') as fh: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ FileNotFoundError: [Errno 2] No such file or directory: '/tmp/pip-install-y364_cvm/cmarkgfm_9fcba25730114ac4a08d1e 7733112a45/src/cmarkgfm/cmark.cffi.h' [end of output] note: This error originates from a subprocess, and is likely not a problem with pip. error: subprocess-exited-with-error × Getting requirements to build wheel did not run successfully. │ exit code: 1 ╰─> See above for output. note: This error originates from a subprocess, and is likely not a problem with pip.

7 62

"Something went wrong | Mailman REST API not available. Please restart Mailman core.
by Hirayama, Pat Oct. 31, 2025

Oct. 31, 2025

Greetings, Some of my lists have started displaying this behavior — when you try to access the list page(s), you get a page with this message: Something went wrong Mailman REST API not available. Please restart Mailman core. My mailman-core docker container is running, as are mailman-django-uwsgi, mailman-nginx and mailman-postfix. Restarting the containers doesn't change this behavior. Google suggests restarting mailman core. Or that we might not be using the correct account name, password or port. The weird thing is that it is not all lists. Most of them seem to be fine. Which suggests to me that the issue is with a few lists, but not systemwide, so I think my settings in mailman.cfg, settings.py, settings_local.py are likely correct. For the problem lists, I see this in the log: ERROR 2025-10-29 18:38:56,784 7 postorius Mailman REST API not available ERROR 2025-10-29 18:38:56,790 7 django.request Service Unavailable: /postorius/lists/obfuscated.name.lists.fhcrc.org/ ERROR 2025-10-29 18:38:56,790 7 django.request Service Unavailable: /postorius/lists/obfuscated.name.lists.fhcrc.org/ So, Postorius can't communicate with the API, I guess? I look at settings_local.py: MAILMAN_REST_API_URL = 'http://mailman-core:8001' I believe 8001 is the default, and since I haven't specified one in the [webservice] section of mailman.cfg, I'm assuming 8001 is correct (plus, it works for other lists). There are a few messages waiting for moderator approval — otherwise, I'd probably try just deleting the list and recreating it. Anyone have any suggestions on what else I should look at? Thanks! -p Pat Hirayama Pronouns: he/him/his Systems Engineer IT | Systems Engineering - Infrastructure Fred Hutch Cancer Center O 206.667.4856 phirayam(a)fredhutch.org<mailto:phirayam@fredhutch.org>

2 7

Archive not working - Reg.
by nirmal＠iitm.ac.in Oct. 29, 2025

Oct. 29, 2025

After sending mail to a list, it is not reflecting back in Hyperkitty archive. Kindly help me in this regard.

4 7

Mailman 3 MFA with django-allauth[mfa]
by Liam Reilly Oct. 29, 2025

Oct. 29, 2025

Has anyone successfully got MFA working in Mailman 3 with django-allauth[mfa]? I'm struggling to get it working with the limited documentation I could find. (https://docs.allauth.org/en/dev/mfa/index.html) If signed in as a user, I can browse to /accounts/2fa/ to activate MFA, but I was hoping to make it a mandatory part of the Sign Up process. Is there something that needs to be done with the URLs somewhere? This list site is an example of how I'd like it to work: https://mailing-lists.imperial.ac.uk/ Here is what I added to settings.py: #---------------------------------------- INSTALLED_APPS= ['hyperkitty', 'postorius', 'django_mailman3', 'django.contrib.admin', 'django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.sites', 'django.contrib.messages', 'django.contrib.staticfiles', 'django.contrib.humanize', 'rest_framework', 'django_gravatar', 'compressor', 'haystack', 'django_extensions', 'django_q', 'allauth', 'allauth.account', 'allauth.mfa', 'allauth.socialaccount'] # Specifies the adapter class to use, allowing you to alter certain default behaviour. MFA_ADAPTER = "allauth.mfa.adapter.DefaultMFAAdapter" # Used to override forms. Defaults to: MFA_FORMS = { 'authenticate': 'allauth.mfa.forms.AuthenticateForm', 'reauthenticate': 'allauth.mfa.forms.AuthenticateForm', 'activate_totp': 'allauth.mfa.forms.ActivateTOTPForm', 'deactivate_totp': 'allauth.mfa.forms.DeactivateTOTPForm', } MFA_RECOVERY_CODE_COUNT = 10 MFA_TOTP_PERIOD = 30 MFA_TOTP_DIGITS = 6 #---------------------------------------- Thanks.

2 1

Disable automatic bouncing globally?
by jkoral＠luc.edu Oct. 28, 2025

Oct. 28, 2025

Is there a way to disabled the automatic bouncing globally on all lists or do I have to do that on each individual list?

2 3

Password reset/confirm email page formatting
by Reilly, Liam Oct. 22, 2025

Oct. 22, 2025

Hi, Does anyone else experience this where the pages for password reset/verify email lack formatting. Not sure what the cause might be as all other pages are fine. Please see attached images. Thanks. [cid:image001.png@01DC435D.8CB42CF0] [cid:image002.png@01DC435D.8CB42CF0] ___________________________________________ Mailman's content filtering has removed the following MIME parts from this message. Content-Type: image/png Name: image001.png Content-Type: image/png Name: image002.png Replaced multipart/alternative part with first alternative.

5 8

Configuring Web Front End
by Dennis Putnam Oct. 21, 2025

Oct. 21, 2025

The next layer of the onion is configuring the web front end. Specifically setting up Django. The documentation seems to make a lot of assumptions about what I know about Django (which is nothing). I cannot find anything about what 'settings.py' should look like for mailman3. It is not even clear where it should go (/opt/mailman/var/etc?). The Django setup documentation is of no help for mailman3. Am I missing something in the wiki?

3 2

Migrating to Mailman3
by dap1＠bellsouth.net Oct. 20, 2025

Oct. 20, 2025

I am about to migrate from mailma2 on CentOS to mailman3 on Ubuntu. Are there any special gotchas of which I need to be aware? TIA.

4 7

Unprocessed Bounce Mails from user with e-mailadresse with a "-" in it
by Wikinaut Oct. 14, 2025

Oct. 14, 2025

The recipient address abc-given.name(a)online.de (member of list mylist(a)myserver.de) has currently an out of office responder and mails are returning to my mailman3 system as unrecognized bounce messages. I suspect the "-" in his address to be in conflict with the bounce address hyphen: <mylist-bounces+abc-given.name=online.de(a)myserver.de> Can any of you experts try on their systems, whether this a bug of mailman3 due to the "-" in the address? Systeminfo: Mailman Core-Version GNU Mailman 3.3.10 (Tom Sawyer) Mailman Core API-Version 3.1 Mailman Core Python-Version 3.11.2 (main, Apr 28 2025, 14:11:48) [GCC 12.2.0]

5 9

default processing
by Sam Darwin Oct. 13, 2025

Oct. 13, 2025

Notice the repeated use of the word "default" (which is a great word, by the way). This creates confusion: Default action to take when this member posts to the list. List default -- follow the list's default member action. Default Processing -- run additional checks and accept the message. Due to backwards compatibility it may be difficult to change. But if it could be modified, how about: Action to take when this member posts to the list. List default -- follow the list's default member action. Standard Processing -- run additional checks and accept the message. In other words, in the context of message acceptance, the word "default" should have a certain selected meaning. Then make extra effort to choose other words for other actions, as proposed here, "Standard Processing", or something similar.

3 10

Mailmanweb RAM Usage
by Odhiambo Washington Oct. 12, 2025

Oct. 12, 2025

Using the uwsgi.ini from the virtualenv method documentation, mailmanweb is constantly using 2GB RAM on my server. My database (MariaDB) size is 2GB. Is this expected? -- 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]

3 5

Can't subscribe on new site/domain
by Flo Oct. 11, 2025

Oct. 11, 2025

Hi, I added a new site in Django: lists.example.com Usually I click on 'view site' and I can add a Domain in Postorios. In this case I get an error message and I need to add a Domain in Django. Then I can go to 'view site'. I can create a mailing list there. However when I send an email to be subscribed, I get the following in mailman.log (and nothing else happens): Oct 09 13:46:24 2025 (110452) deque: do_confirm_verify Traceback (most recent call last): File "/usr/lib/python3/dist-packages/mailman/app/workflow.py", line 69, in __next__ return step() File "/usr/lib/python3/dist-packages/mailman/app/subscriptions.py", line 379, in _step_send_confirmation notify(SubscriptionConfirmationNeededEvent( ~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ self.mlist, self.token, self.address.email)) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/lib/python3/dist-packages/zope/event/__init__.py", line 33, in notify subscriber(event) ~~~~~~~~~~^^^^^^^ File "/usr/lib/python3/dist-packages/mailman/app/subscriptions.py", line 669, in handle_SubscriptionConfirmationNeededEvent _handle_confirmation_needed_events(event, 'list:user:action:subscribe') ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/lib/python3/dist-packages/mailman/app/subscriptions.py", line 638, in _handle_confirmation_needed_events confirm_address = event.mlist.confirm_address(event.token) File "/usr/lib/python3/dist-packages/mailman/model/mailinglist.py", line 335, in confirm_address local_part = expand(config.mta.verp_confirm_format, self, dict( address='{}-confirm'.format(self.list_name), cookie=cookie)) File "/usr/lib/python3/dist-packages/mailman/utilities/string.py", line 69, in expand if mlist.domain.base_url is not None: ^^^^^^^^^^^^ File "/usr/lib/python3/dist-packages/mailman/model/mailinglist.py", line 279, in domain return getUtility(IDomainManager)[self.mail_host] ~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^ File "/usr/lib/python3/dist-packages/mailman/model/domain.py", line 177, in __getitem__ raise KeyError(mail_host) KeyError: 'lists.example.com' Oct 09 13:46:24 2025 (110452) Uncaught runner exception: 'lists.example.com' Oct 09 13:46:24 2025 (110452) Traceback (most recent call last): File "/usr/lib/python3/dist-packages/mailman/core/runner.py", line 179, in _one_iteration self._process_one_file(msg, msgdata) ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^ File "/usr/lib/python3/dist-packages/mailman/core/runner.py", line 272, in _process_one_file keepqueued = self._dispose(mlist, msg, msgdata) File "/usr/lib/python3/dist-packages/mailman/runners/command.py", line 214, in _dispose status = command.process( mlist, msg, msgdata, parts, results) File "/usr/lib/python3/dist-packages/mailman/commands/eml_membership.py", line 122, in process ISubscriptionManager(mlist).register(subscriber, ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^ delivery_mode=delivery_mode) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/lib/python3/dist-packages/mailman/app/subscriptions.py", line 584, in register list(workflow) ~~~~^^^^^^^^^^ File "/usr/lib/python3/dist-packages/mailman/app/workflow.py", line 69, in __next__ return step() File "/usr/lib/python3/dist-packages/mailman/app/subscriptions.py", line 379, in _step_send_confirmation notify(SubscriptionConfirmationNeededEvent( ~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ self.mlist, self.token, self.address.email)) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/lib/python3/dist-packages/zope/event/__init__.py", line 33, in notify subscriber(event) ~~~~~~~~~~^^^^^^^ File "/usr/lib/python3/dist-packages/mailman/app/subscriptions.py", line 669, in handle_SubscriptionConfirmationNeededEvent _handle_confirmation_needed_events(event, 'list:user:action:subscribe') ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/lib/python3/dist-packages/mailman/app/subscriptions.py", line 638, in _handle_confirmation_needed_events confirm_address = event.mlist.confirm_address(event.token) File "/usr/lib/python3/dist-packages/mailman/model/mailinglist.py", line 335, in confirm_address local_part = expand(config.mta.verp_confirm_format, self, dict( address='{}-confirm'.format(self.list_name), cookie=cookie)) File "/usr/lib/python3/dist-packages/mailman/utilities/string.py", line 69, in expand if mlist.domain.base_url is not None: ^^^^^^^^^^^^ File "/usr/lib/python3/dist-packages/mailman/model/mailinglist.py", line 279, in domain return getUtility(IDomainManager)[self.mail_host] ~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^ File "/usr/lib/python3/dist-packages/mailman/model/domain.py", line 177, in __getitem__ raise KeyError(mail_host) KeyError: 'lists.example.com' Oct 09 13:46:24 2025 (110452) SHUNTING: 1760010384.7617948+270daab1a93851be76e09ce6b976f78ec6232ca2 If I write a subscription email to any list of any other domain/site, I get back the request of confirmation and nothing in mailman.log. And there is another difference to other sites: I get shown all lists of all sites/domains and not only the ones which belongs to this site/domain. What could I have done wrong here? I really don't get it. Thanks for help. Flo

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Mailman Core - Log Rotation
by Odhiambo Washington Oct. 9, 2025

Oct. 9, 2025

Did people agree on the accepted (standard) way for rotating mailman.log? I request that it be added to the official documentation. -- 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 4

Confirmation Mail not getting after logging in
by nirmal＠iitm.ac.in Oct. 9, 2025

Oct. 9, 2025

I have installed mailman3. But after logging in I am not getting confirmation mail. The message displayed is hereby follows:- example.com Search all lists Sign In Sign Up Manage lists ×Confirmation e-mail sent to nirmal(a)iitm.ac.in. Verify Your E-mail Address We have sent an e-mail to you for verification. Follow the link provided to finalize the signup process. If you do not see the verification e-mail in your main inbox, check your spam folder. Please contact us if you do not receive the verification e-mail within a few minutes. Powered by HyperKitty version 1.3.7.

4 3

REST API: create list: list styles
by Peter Knowles Oct. 7, 2025

Oct. 7, 2025

I've read that List Styles are essentially python plugins and/or hard coded into the source... Ugh. I was wondering, instead of hacking together some Python code, as I'm a humble PHP dev... Is it possible... 1. To pass all "style" values to the REST API upon creating a list "manually"? Essentially setting all the options on creation. 2. Where can I find a full list of options that can be set on a list, and their accepted values (boolean, string, etc) Thanks in advance!

2 1

Sendgrid experiences
by Andrew Hodgson Oct. 6, 2025

Oct. 6, 2025

Hi. I am temporarily using Sendgrid now on my Mailman instance. Initial observations have been positive. A list with 100 users is racking up email delivers though, I am on the basic paid account which gives me 50k emails per month. I was hoping to use a cheaper provider and pay overage costs per email on the assumption that I'm seeing a spike in traffic today because people have started getting the messages again. Sendgrid is maintaining the Message-Id header which is good for archiving. It is re-writing the Return-Path header though which means that bounce handling in Mailman won't work, but I think all the services do this in some way so I am happy to live with that for the moment. Hope this helps. Andrew.

10 24

Mailman3 equivalent of list_owners binary
by l.reilly＠ucl.ac.uk Oct. 3, 2025

Oct. 3, 2025

Hi, In our Mailman 2 environment we have a script that uses the binaries 'mailman/bin/list_owners' and 'mailman/bin/sync_members' to keep a list of owners up to date. This is handy for sending out service notifications to all list owners. Unfortunately, there doesn't seem to be an exact equivalent in Mailman 3 for list_owners. I've tried using the command 'mailman members --role administrator LISTSPEC' whilst looping through each list from the output of 'mailman lists'. It almost does the job, but in cases where an owner has a display name set the sync fails as it cannot parse these lines. e.g. Cannot parse as valid email address (skipping): Smith, John <john.smith(a)example.com> I can probably try to clean the output of "mailman members" before doing 'mailman syncmembers'. I just wondered if anybody is doing something similar and has a better approach I'm missing? Thanks

3 3

deleting a list of spammers from non-member list
by Philip Bondi Oct. 2, 2025

Oct. 2, 2025

Hello to all: I've studied the following: https://docs.mailman3.org/projects/mailman/en/latest/src/mailman/commands/d… ```bash mailman shell -l mmlist.domain.ca << EOF | tr , '\012' > nonmember.txt list(m.nonmembers.members) EOF ``` I was able to produce a clean list of 50 non-member email addresses that are spammers. How would I take this list of non-members and delete them? I was unable to use mailman delmembers

2 1

Login confusion
by Markus Grandpré Oct. 2, 2025

Oct. 2, 2025

Dear list, We've encountered an issue with Postorius after migrating from Mailman 2.1. It appears that Postorius is treating email addresses with differing capitalization as distinct user accounts. For example, <markus.grandpre(a)uni-konstanz.de> and <Markus.Grandpre(a)uni-konstanz.de> are being recognized as separate identities. This is causing significant confusion. Users registered with one capitalization pattern are not seeing the list subscriptions and settings that were previously associated with their account (imported from Mailman v2.1) which used a different capitalization. Is there a known configuration option or method within Postorius (or Mailman 3 itself) to normalize or unify account identification, effectively treating email addresses as case-insensitive for account matching? We need a solution that ensures users see their correct list memberships regardless of the capitalization they use when logging in or that was used during the original Mailman 2.1 import. Thank you in advance Markus -- Markus Ludwig Grandpré Universität Konstanz Kommunikations-, Informations-, Medienzentrum (KIM) Abteilung IT-Dienste Forschung und Lehre, B803, Tel: ++49 7531 88 4342

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