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

Block members from sending cc's and bcc's
by Cathryn McGuire Oct. 26, 2025

Oct. 26, 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 20

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

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

11 24

Auto discard after max_days_to_hold not working.
by Hitashi mancho Sept. 30, 2025

Sept. 30, 2025

Dear all, I have migrated around 300 mailing lists from Mailman 2 to Mailman 3. In most of the mailing lists we have configured "max_days_to_hold" to 2. It was working fine in Mailman 2. However, it is not working in Mailman 3. Mailman version: GNU Mailman 3.3.10 (Tom Sawyer) Python 3.11.9 Rocky Linux 9.5 Crontab: @daily /opt/mailman/venv/bin/mailman digests --periodic 00 08 * * * /opt/mailman/venv/bin/mailman notify * * * * * /opt/mailman/venv/bin/mailman-web runjobs minutely 0,15,30,45 * * * * /opt/mailman/venv/bin/mailman-web runjobs quarter_hourly @hourly /opt/mailman/venv/bin/mailman-web runjobs hourly @daily /opt/mailman/venv/bin/mailman-web runjobs daily @weekly /opt/mailman/venv/bin/mailman-web runjobs weekly @monthly /opt/mailman/venv/bin/mailman-web runjobs monthly @yearly /opt/mailman/venv/bin/mailman-web runjobs yearly Please guide me in this regard. Regards, Hitachi.

3 6

The MAILMAN_ARCHIVER_KEY was not sent as the Authorization HTTP header.
by Marco Marinello Sept. 23, 2025

Sept. 23, 2025

Hi everybody, as per subject, I'm getting this error in the hyperkitty log when mailman daemon tries to archive a mail. I've setup the hyperkitty.cfg file with api_key = MAILMAN_ARCHIVER_KEY in settings_local.py but still nothing. I've seen here and in GitLab issues some errors concerning a wrong api key but here it says that it wasn't sent at all. All packages installed via pip install + latest .zip release, including mailman-hyperkitty. Currently running on apache with mod_wsgi_py3 without https. Any clue? All the best, Marco Marinello

4 12

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