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

HSTS Missing from HTTPS Server
by jkoral＠luc.edu Sept. 17, 2025

Sept. 17, 2025

In my configuration, I am using Apache to reverse proxy the requests to a uwsgi. After our security office scanned the server, it was shown that HSTS is missing from the HTTPS server. The instructions say to add some lines to /etc/apache2/sites-enabled/. The only file in there is 000-default.conf that holds the configuration, but the VirtualHost is port 80. I am using an F5 to to automatically redirect port 80 to port 443, but it is still showing this vulnerability. My question is, how can enable the Virtual Host for 443 on the server? Or can that configuration be located somewhere else? Or can I just create a new Virtual Host with the added configuration for mailman? Thanks, Joe Koral

3 2

Errors while importing mm2 list archives
by Odhiambo Washington Sept. 9, 2025

Sept. 9, 2025

MM3-3.3.7, Hyperkitty-1.3.6 While importing, I encountered several of this error: <CUT> MySQLdb.OperationalError: (1366, "Incorrect string value: '\\xF0\\x9F\\x98\\x8A, ...' for column 'content' at row 1") The above exception was the direct cause of the following exception: Traceback (most recent call last): File "/opt/mailman/mm/venv/lib/python3.9/site-packages/hyperkitty/management/commands/hyperkitty_import.py", line 232, in from_mbox add_to_list(self.list_address, message) File "/opt/mailman/mm/venv/lib/python3.9/site-packages/hyperkitty/lib/incoming.py", line 153, in add_to_list email.save() File "/opt/mailman/mm/venv/lib/python3.9/site-packages/django/db/models/base.py", line 812, in save self.save_base( File "/opt/mailman/mm/venv/lib/python3.9/site-packages/django/db/models/base.py", line 863, in save_base updated = self._save_table( File "/opt/mailman/mm/venv/lib/python3.9/site-packages/django/db/models/base.py", line 1006, in _save_table results = self._do_insert( File "/opt/mailman/mm/venv/lib/python3.9/site-packages/django/db/models/base.py", line 1047, in _do_insert return manager._insert( File "/opt/mailman/mm/venv/lib/python3.9/site-packages/django/db/models/manager.py", line 85, in manager_method return getattr(self.get_queryset(), name)(*args, **kwargs) File "/opt/mailman/mm/venv/lib/python3.9/site-packages/django/db/models/query.py", line 1791, in _insert return query.get_compiler(using=using).execute_sql(returning_fields) File "/opt/mailman/mm/venv/lib/python3.9/site-packages/django/db/models/sql/compiler.py", line 1660, in execute_sql cursor.execute(sql, params) File "/opt/mailman/mm/venv/lib/python3.9/site-packages/django/db/backends/utils.py", line 67, in execute return self._execute_with_wrappers( File "/opt/mailman/mm/venv/lib/python3.9/site-packages/django/db/backends/utils.py", line 80, in _execute_with_wrappers return executor(sql, params, many, context) File "/opt/mailman/mm/venv/lib/python3.9/site-packages/django/db/backends/utils.py", line 89, in _execute return self.cursor.execute(sql, params) File "/opt/mailman/mm/venv/lib/python3.9/site-packages/django/db/utils.py", line 91, in __exit__ raise dj_exc_value.with_traceback(traceback) from exc_value File "/opt/mailman/mm/venv/lib/python3.9/site-packages/django/db/backends/utils.py", line 89, in _execute return self.cursor.execute(sql, params) File "/opt/mailman/mm/venv/lib/python3.9/site-packages/django/db/backends/mysql/base.py", line 75, in execute return self.cursor.execute(query, args) File "/opt/mailman/mm/venv/lib/python3.9/site-packages/MySQLdb/cursors.py", line 206, in execute res = self._query(query) File "/opt/mailman/mm/venv/lib/python3.9/site-packages/MySQLdb/cursors.py", line 319, in _query db.query(q) File "/opt/mailman/mm/venv/lib/python3.9/site-packages/MySQLdb/connections.py", line 254, in query _mysql.connection.query(self, query) django.db.utils.OperationalError: (1366, "Incorrect string value: '\\xF0\\x9F\\x98\\x8A, ...' for column 'content' at row 1") </CUT> That occurred several times, but the import process went all the way, to 99% then came to the point below. Message 253d9d44-cc3e-fed1-144b-34da88c52b39(a)emailplus.org failed to import, skipping Computing thread structure Synchronizing properties with Mailman 904 emails left to refresh, checked 0 764 emails left to refresh, checked 0 Warming up cache Traceback (most recent call last): File "/opt/mailman/mm/venv/bin/django-admin", line 8, in <module> sys.exit(execute_from_command_line()) File "/opt/mailman/mm/venv/lib/python3.9/site-packages/django/core/management/__init__.py", line 446, in execute_from_command_line utility.execute() File "/opt/mailman/mm/venv/lib/python3.9/site-packages/django/core/management/__init__.py", line 440, in execute self.fetch_command(subcommand).run_from_argv(self.argv) File "/opt/mailman/mm/venv/lib/python3.9/site-packages/django/core/management/base.py", line 402, in run_from_argv self.execute(*args, **cmd_options) File "/opt/mailman/mm/venv/lib/python3.9/site-packages/django/core/management/base.py", line 448, in execute output = self.handle(*args, **options) File "/opt/mailman/mm/venv/lib/python3.9/site-packages/hyperkitty/management/commands/hyperkitty_import.py", line 411, in handle call_command("hyperkitty_warm_up_cache", list_address) File "/opt/mailman/mm/venv/lib/python3.9/site-packages/django/core/management/__init__.py", line 198, in call_command return command.execute(*args, **defaults) File "/opt/mailman/mm/venv/lib/python3.9/site-packages/django/core/management/base.py", line 448, in execute output = self.handle(*args, **options) File "/opt/mailman/mm/venv/lib/python3.9/site-packages/hyperkitty/management/commands/hyperkitty_warm_up_cache.py", line 53, in handle self.warm_up_mlist(mlist, options) File "/opt/mailman/mm/venv/lib/python3.9/site-packages/hyperkitty/management/commands/hyperkitty_warm_up_cache.py", line 61, in warm_up_mlist for thread in mlist.recent_threads: File "/opt/mailman/mm/venv/lib/python3.9/site-packages/hyperkitty/models/mailinglist.py", line 162, in recent_threads return self.cached_values["recent_threads"]() File "/opt/mailman/mm/venv/lib/python3.9/site-packages/hyperkitty/models/common.py", line 58, in __call__ return self.get_or_set(*args, **kwargs) File "/opt/mailman/mm/venv/lib/python3.9/site-packages/hyperkitty/models/mailinglist.py", line 317, in get_or_set return [Thread.objects.get(pk=pk) for pk in thread_ids] File "/opt/mailman/mm/venv/lib/python3.9/site-packages/hyperkitty/models/mailinglist.py", line 317, in <listcomp> return [Thread.objects.get(pk=pk) for pk in thread_ids] File "/opt/mailman/mm/venv/lib/python3.9/site-packages/django/db/models/manager.py", line 85, in manager_method return getattr(self.get_queryset(), name)(*args, **kwargs) File "/opt/mailman/mm/venv/lib/python3.9/site-packages/django/db/models/query.py", line 650, in get raise self.model.DoesNotExist( hyperkitty.models.thread.Thread.DoesNotExist: Thread matching query does not exist. (venv) [mailman@gw ~/mm]$ Should I take it that the import was successful, or what should I do next? PS: This is the 1st run after installing MM3 on this server and the MM3 list hasn't gone live. So if anything, I am okay with doing what needs to be done and rerun the import. TIA -- Best regards, Odhiambo WASHINGTON, Nairobi,KE +254 7 3200 0004/+254 7 2274 3223 "Oh, the cruft.", egrep -v '^$|^.*#' ¯\_(ツ)_/¯ :-)

4 14

after last upgrade I've got a CSRF failed verification
by Guillermo Hernandez (Oldno7) Sept. 5, 2025

Sept. 5, 2025

I did upgrade one of my mailman3 server after Abhilasj announcement: "I am pleased to announce several new releases for GNU Mailman project. 1. Mailman Core 3.3.6 1 <https://docs.mailman3.org/projects/mailman/en/latest/src/mailman/docs/NEWS.…> 2. Postorius 1.3.7 2 <https://docs.mailman3.org/projects/postorius/en/latest/news.html#section-2> 3. Hyperkitty 1.3.6 [3] 4. Mailmanclient 3.3.4 [4] 5. Django-mailman3 1.3.8 [5]" I did it via pip and all seems to be working, but when I try to discard or accept any message via postorius it shows a Forbidden 403 error CSRF verification failed. In my settings.py I have commented out these variables: # Other security settings # SECURE_SSL_REDIRECT = True # If you set SECURE_SSL_REDIRECT to True, make sure the SECURE_REDIRECT_EXEMPT # contains at least this line: # SECURE_REDIRECT_EXEMPT = [ # "archives/api/mailman/.*", # Request from Mailman. # ] # SESSION_COOKIE_SECURE = True # SECURE_CONTENT_TYPE_NOSNIFF = True # SECURE_BROWSER_XSS_FILTER = True # CSRF_COOKIE_SECURE = True # CSRF_COOKIE_HTTPONLY = True # X_FRAME_OPTIONS = 'DENY' I've been messing with them whith no results. It's like it lacked some value in some template... Can someone, please, point me in the right direction? Thanks in advance -- ___________________________________________ Mailman's content filtering has removed the following MIME parts from this message. Content-Type: image/png Name: firma-GHP-emails.png Replaced multipart/alternative part with first alternative.

3 8

mailman-web migrate fails with sqlite3.IntegrityError: UNIQUE constraint failed: account_emailaddress.email
by Stefan Bauer Sept. 5, 2025

Sept. 5, 2025

Dear Users, trying to update mailman3 to lastest version, we fail during mailman-web migrate with: Operations to perform: Apply all migrations: account, admin, auth, contenttypes, django_mailman3, django_q, hyperkitty, postorius, sessions, sites, socialaccount Running migrations: Applying account.0006_emailaddress_lower...Traceback (most recent call last): File "/opt/mailman/venv/lib/python3.10/site-packages/django/db/backends/utils.py", line 89, in _execute return self.cursor.execute(sql, params) File "/opt/mailman/venv/lib/python3.10/site-packages/django/db/backends/sqlite3/base.py", line 328, in execute return super().execute(query, params) sqlite3.IntegrityError: UNIQUE constraint failed: account_emailaddress.email We found a workaround to fake the migration with migrate --fake Operations to perform: Apply all migrations: account, admin, auth, contenttypes, django_mailman3, django_q, hyperkitty, postorius, sessions, sites, socialaccount Running migrations: Applying account.0006_emailaddress_lower... FAKED Applying account.0007_emailaddress_idx_email... FAKED Applying account.0008_emailaddress_unique_primary_email_fixup... FAKED Applying account.0009_emailaddress_unique_primary_email... FAKED Applying django_q.0015_alter_schedule_schedule_type... FAKED Applying django_q.0016_schedule_intended_date_kwarg... FAKED Applying django_q.0017_task_cluster_alter... FAKED Applying django_q.0018_task_success_index... FAKED Applying postorius.0019_alter_emailtemplate_data... FAKED And mailman 3 is still processing mails. I'm unsure if i should recover from snapshot or keep it going? Could this be some duplicate users with same mail-address? I have at least spotted one user and delete him. thank you. Stefan

3 4

Stalwart plugin
by info＠joergschulz.de Aug. 30, 2025

Aug. 30, 2025

Hi all, I'm just reviewing Stalwart as a many-in-one mailing system. Did anybody yet succeed in plugging mailman into stalwart (the incoming bit seems to be difficult)?

3 2

Missing Base64 encoding from control message reply
by lists-mailman3＠janaberger.de Aug. 22, 2025

Aug. 22, 2025

Dear all, I have a setup with GNU Mailman 3.3.8 where a user tried to subscribe. When replying to the "confirm" message, the user received a completely garbled response, like so: N�z˥��ʋ�zf��&��j��u�[zZ0:��v��,j�z֢��k�e�0 4Dҹ��r�^b��r�ߊ��*'��yם��{ax�L�X��0:��v��,j�z֢��k�d�m�-��zz�rn��l]y+��-E�( �^N��'��M��tۯ��Mz��^i��׮��}�o�\ӷ��6sN�zf��ݮ��r��z˥��b�{h��݉��f�r�ne== (The line above contains numerous unprintable characters, etc.) The user then forwarded the .eml file to me, which clearly shows the contents of the mail as plain text while being announced as base64 (Content-Transfer-Encoding: base64): START OF EML Return-Path: <LISTNAME-bounces(a)lists.DOMAIN.COM> Received: from DOMAIN.COM ([144.76.173.241]) by mx-ha.USERDOMAIN.NET (mx06 [IP]) with ESMTPS (Nemesis) id 1M27WV-1qhRFk39Sr-00AQcR for <USER(a)USERDOMAIN.NET>; Thu, 21 Sep 2023 19:10:37 +0200 Received: from localhost (localhost.localdomain [127.0.0.1]) by DOMAIN.COM (Postfix) with ESMTP id 4058B3BD5EEF for <USER(a)USERDOMAIN.NET>; Thu, 21 Sep 2023 19:10:37 +0200 (CEST) Received: from DOMAIN.COM ([127.0.0.1]) by localhost (DOMAIN.COM [127.0.0.1]) (amavis, port 10024) with ESMTP id x0ngnlRnGraH for <USER(a)USERDOMAIN.NET>; Thu, 21 Sep 2023 19:10:37 +0200 (CEST) Received: from [IP] (unknown [IP]) by DOMAIN.COM (Postfix) with ESMTP id DC8603BD5EEE for <USER(a)USERDOMAIN.NET>; Thu, 21 Sep 2023 19:10:36 +0200 (CEST) Subject: =?utf-8?q?The_results_of_your_email_commands?= From: LISTNAME-bounces(a)lists.DOMAIN.COM To: USER(a)USERDOMAIN.NET Content-Transfer-Encoding: base64 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Message-ID: <169531623416.29.5762261018677554285@mailman-core> Date: Thu, 21 Sep 2023 17:10:34 +0000 Precedence: bulk X-Mailman-Version: 3.3.8 List-Id: <LISTNAME.lists.DOMAIN.COM> List-Help: <mailto:LISTNAME-request@lists.DOMAIN.COM?subject=help> List-Owner: <mailto:LISTNAME-owner@lists.DOMAIN.COM> List-Subscribe: <mailto:LISTNAME-join@lists.DOMAIN.COM> List-Unsubscribe: <mailto:LISTNAME-leave@lists.DOMAIN.COM> Envelope-To: <USER(a)USERDOMAIN.NET> X-Spam-Flag: NO The results of your email command are provided below. - Original message details: From: USER <USER(a)USERDOMAIN.NET> Subject: Re: Your confirmation is needed to join the LISTNAME(a)lists.DOMAIN.COM mailing list. Date: Thu, 21 Sep 2023 19:10:26 +0200 Message-ID: <3c1eaaf8-1677-432f-b9dc-07f18902c06c(a)email.android.com> - Results: Confirmation token did not match - Done. END OF EML Is this possibly a bug in Mailman? Any ideas on what else could be causing this?

7 16

Heads up: settings.ACCOUNT_AUTHENTICATION_METHOD is deprecated
by Andreas Vetter Aug. 1, 2025

Aug. 1, 2025

Hello, I have a venv installation of: mailman postorius django-mailman3 hyperkitty mailman-web I just did a pip install -U --upgrade-strategy eager When running mailman-web runjobs -l I get the following Warning: System check identified some issues: WARNINGS: ?: settings.ACCOUNT_AUTHENTICATION_METHOD is deprecated, use: settings.ACCOUNT_LOGIN_METHODS = {'email', 'username'} I guess this is from allauth (version django-allauth-65.4.1). Changing ACCOUNT_AUTHENTICATION_METHOD to ACCOUNT_LOGIN_METHODS in /etc/mailman3/settings.py is not enough. One has to edit venv/lib/python3.11/site-packages/mailman_web/settings/mailman.py -- Mit freundlichen Gruessen, Andreas Vetter

4 9

Upgrading other python packages than the mailman ones in a venv results in dependency conflicts
by Ulf R. July 29, 2025

July 29, 2025

Hello, I know this should be the way to upgrade: https://docs.mailman3.org/en/latest/upgrade-guide.html I have 3.3.10 installed. I saw that some python packages are outdated an tried this which install all outdated packages in a row: pip list --outdated --format=json | jq '.[].name' | xargs -n1 pip install -U One outdated package was django and this part happened: ------------------------------- vDownloading Django-5.1.4-py3-none-any.whl (8.3 MB) Installing collected packages: Django Attempting uninstall: Django Found existing installation: Django 4.2.16 Uninstalling Django-4.2.16: Successfully uninstalled Django-4.2.16 ERROR: pip's dependency resolver does not currently take into account all the packages that are installed. This behaviour is the source of the following dependency conflicts. hyperkitty 1.3.12 requires django<5.1,>=4.2, but you have django 5.1.4 which is incompatible. mailman-web 0.0.9 requires django<4.3,>=4.0, but you have django 5.1.4 which is incompatible. postorius 1.3.13 requires django<5.1,>=4.2, but you have django 5.1.4 which is incompatible. django-mailman3 1.3.15 requires django<5.1,>=4.2, but you have django 5.1.4 which is incompatible. Successfully installed Django-5.1.4 ------------------------------- So I made a roll back. Is this really the only secure way to update the venv?: pip install -U mailman postorius django-mailman3 hyperkitty mailman-web May be yes and I have to ignore the rest? ;-) Thank you und regards

5 6

Enforcing SSO and subscription options
by dlb-ml＠anl.gov July 21, 2025

July 21, 2025

Contrary to the messages I found in the archive, rather trying to delete or remove the social login portion of the sign in page, I'm looking to see if there's any way to isolate the third-party login section and prevent local account sign in and sign up. This way, we can ensure that the people within our organization are using a stronger auth method that prioritizes MFA, rather than just username/password. To do this, our plan is to block signups using "ACCOUNT_ADAPTER = 'django_mailman3.views.user_adapter.DisableSignupAdapter'" and to remove the portions of the login template such that the username/password/forgot password fields are removed, leaving just the button to our SSO instance. I'm anticipating that this should be sufficient to block username/password sign ins, and is resistant to page manipulation due to CSRF tokens, but I wanted to ask to see if there was a better way, like an official configuration (which I have not found yet). I did see that there is the SOCALACCOUNT_ONLY option, as provided by allauth (https://docs.allauth.org/en/latest/socialaccount/configuration.html) but that broke any attempt to display the sign in page, and I'm assuming is not supported with the current version of MM3. Is my plan to modify the templates viable? Additionally, because external users would not have access to their own dashboards within the web UI, and since we are planning on disabling anonymous subscriptions with "SHOW_ANONYMOUS_SUBSCRIBE_FORM=False", the only two viable ways to subscribe to a list for them would be: 1) Send a request directly to the list owner or a superadmin to subscribe/unsubscribe the address 2) Allow email commands to subcribe/unsubscribe users (i.e. $LISTNAME-join@$DOMAIN) Given the discussions on disabling the anonymous subscription form, are the email commands a less spam-susceptible solution or are they just as vulnerable as the form? Thanks

4 7

Block members from sending cc's and bcc's
by Cathryn McGuire July 19, 2025

July 19, 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

2 10