- Mailman-users - lists.mailman3.org

Problems with SPOOFED_UNAUTH
by M.Ede Sept. 10, 2025

Sept. 10, 2025

Hello everyone, I use mailman together with mailcow and have configured my mailing list as follows: - Anonymous list: Yes - DMARC mitigation action: Replace From: with list address - DMARC Mitigate unconditionally: Yes My problem is that my emails are not being accepted by mailcow (rspamd) with the error SPOOFED_UNAUTH (50.00) In the out-queue of mailman the headers look like this: [QUOTE] Authentication-Results: <my.mailserv.er>; dkim=none; spf=pass (<my.mailserv.er>: domain of sender(a)t-online.de designates 194.25.134.81 as permitted sender) smtp.mailfrom=sender(a)t-online.de; dmarc=pass (policy=none) header.from=t-online.de ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=lists.<list.domain>; s=dkim; t=1757400255; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=zmDaIaGeCj1IT8TuP4aJmXRbfyNHV3LqjIfHveVMS0M=; b=Im4F/mpchty4CJvvcW4ZqxMl0BRNnybjcmkPboUSuodopd7nOXaesj3w6kgIwZkLHn1uHY FOiSSjyfZ8Zu0/w4l4Du5uoij2qDCEYHvGFhEugFizE9HJ71i7x0SzoEVSZ9uve6sqnWaE X8+GqtCE+vf0TLLeKhXKHJaBdltbMSqO+QT0BOlbmOdvmUCy6MIqysocTod9io5/+CQOgd SSvsSdDq00CG1IBUsg0Tm2rSf/L2bpGD3bl7QEBKS2id7NeLFM/Zme/3mkHo0N/u7m47xy XSLS9R0C3Kg/YxHY8ctPt7Yas6fwYfzGAOXRvVJz1eeXSrl8B5vWfzJ8+WrE5Q== ARC-Authentication-Results: i=1; <my.mailserv.er>; dkim=none; spf=pass (<my.mailserv.er>: domain of sender(a)t-online.de designates 194.25.134.81 as permitted sender) smtp.mailfrom=sender(a)t-online.de; dmarc=pass (policy=none) header.from=t-online.de ARC-Seal: i=1; s=dkim; d=lists.<list.domain>; t=1757400255; a=rsa-sha256; cv=none; b=yrD6cRE7c/L/v8D76U5Ohn57/MJ7/VsObkzQdAHbFny5DbyEO8pZvM0VCVYA5hUGXqoqoU nnKpEW6/CqvNIZmsS9hKzQQEdO5yIzNnyYjARcW5w5MpAlkMjmH3dQ68mLIS9SUyXUsoXj m1zAeYmdTjZWQOiYanaNJLRuxCWSFQHOpAljZe/lZt+4llNNA01YqirqGBRe6uMaJoebe6 2ubsHTr6VlfTrBrdFqLLSWyRBls+e0JwOd2jGahaQ6/ZIf4l1dOqdaUHSq31RjEDAiofmK IGeKC97iu3r9LiFsjICyi+/yedMGbwSeyyFMzz+cAV7wM84eWfSx2S2kPP1c9Q== [END QUOTE] When the email arrives at rspamd for verification, the DKIM header is added, but there is also the entry: arc=reject ("signature check failed: fail, {[1] = sig:lists.list.domain:reject}"): [QUOTE] DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=lists.list.domain; s=dkim; t=1757413251; h=from:reply-to:subject:date:message-id:to:mime-version:content-type: content-transfer-encoding:content-language:list-id:list-help: list-owner:list-unsubscribe:list-subscribe:list-post; bh=jH/b69qzW7O+s5h3yE2MxKTwFLElX7b39ILc9yHGhkc=; b=AApU4mb2iuN9u1lYTrIKIcPnB4jzXDX+8vC+2/WwHC8JvCukiR2Std5k3E10cuAyYFhPVk zn6AWY+s6c6HKslDn0RiO3i9QYRLAY5MESxvj0tKO1dKDMz+A8RdcOf4kdO4hDr0DQBf7v yQLLnLjgK8QpZdW8MrlfxcQpQ9XrlyP2GX+ntFh5vDl7frNPXQfnBMoo+l0DIs6SWQuaFX ikrOiISYKugL8TmWXnGohXiAM84W/JT0lvP/Lmt3NjxlyNsAWpHQz736LphydY4r5/JjHI of99pRcbTvEmkZogthHFaXMOG2sDGxGwlIc3+oIUHoXqyY+VLsBQs8FzjR+eaw== Authentication-Results: <my.mailserv.er>; arc=reject ("signature check failed: fail, {[1] = sig:lists.list.domain:reject}") ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=lists.list.domain; s=dkim; t=1757413249; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=QSqNoTMweT1jo6F77TLHa+Nh7a0n/g9qDOsUTT8KpQ4=; b=rDgMC26uNsyTPgmddqQOiUsJh25KUa69TeMJfekVn5sFOnvhQdoa9LCogRMMKzJomA0wu6 CCdi6jGJpjtJdzB7PQ8UhQbeFiOUy9JNswFxQ+Qk1GXBxgN892C6KL/DiB/VW1j1nL0xOk Tc0BNC1zH1/MG2hB332t6u/rjWO+PtxIznAdcCP29AhO39RWWY/J0c/CHCOoqFYKCEf1ZH J4Wqeu9ANF44cPwopuJzJioWts6JKRvAM5TjnInZ+HaSv5QmuHvdI0fWvh272O3vGfvEPc iG1QsJS9XWpzkymRjYWo6h1c4/eY7eZd4FEzSR/TtW6Ud9b04A5lUmPpEvTxlQ== ARC-Authentication-Results: i=1; <my.mailserv.er>; dkim=none; dmarc=pass (policy=none) header.from=t-online.de; spf=pass (<my.mailserv.er>: domain of sender(a)t-online.de designates 194.25.134.20 as permitted sender) smtp.mailfrom=sender(a)t-online.de [END QUOTE] What am I still doing wrong? Can you help me, which setting is still missing? What informations are you still missing? Thanks for your help, Matthias

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Contribution: A small script for presetting member preferences and reset bounce_scores of all members
by Wikinaut Sept. 10, 2025

Sept. 10, 2025

In case you need this, I do. Of course, the shown preferences need to be adapted according to your needs. def reset_bounce_scores(): # reset bounce scores and setting certain standard member preferences to all members in all mailinglists # 20250910 from zope.component import getUtility from mailman.interfaces.listmanager import IListManager from mailman.interfaces.member import DeliveryMode, DeliveryStatus RED = "\033[31m\033[1m" X = "\033[0m" hide_address = False delivery_status = DeliveryStatus.enabled lm = getUtility(IListManager) for mlist in lm.mailing_lists: # print(f"... checking bounce status and setting standard preferences of members in {mlist.fqdn_listname}") print(f"... resetting bounce status of members in {mlist.fqdn_listname}") for member in mlist.members.members: prefs = member.preferences prefs.acknowledge_posts = True prefs.hide_address = hide_address # prefs.preferred_language = 'de' prefs.receive_list_copy = True prefs.receive_own_postings = True prefs.delivery_mode = DeliveryMode.regular prefs.delivery_status = delivery_status bs = member.bounce_score if bs > 0: print(f"reset bounce score of: {member.address.email} {mlist.fqdn_listname} {RED}{bs}{X}") member.bounce_score = 0

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Internal Server Error: /archives/api/mailman/archive OperationalError at /archives/api/mailman/archive (1366, "Incorrect string value: '\\xF0\\x9F\\x98\\x8A\\x0A\\x0A...' for column `mailman3web`.`hyperkitty_email`.`content` at row 1")
by Wikinaut Sept. 10, 2025

Sept. 10, 2025

Someone sent a short E-Mail with an Emoition in it. Is there something known about problems? The mails was sent via mailman3, but not archived due to the error. I can bring more details, please let me know, if this is requested. Internal Server Error: /archives/api/mailman/archive OperationalError at /archives/api/mailman/archive (1366, "Incorrect string value: '\\xF0\\x9F\\x98\\x8A\\x0A\\x0A...' for column `mailman3web`.`hyperkitty_email`.`content` at row 1") Hyperkitty 1.3.12 GNU Mailman 3.3.10 (Tom Sawyer) Python 3.11.2 (main, Apr 28 2025, 14:11:48) [GCC 12.2.0] Now, every new mail triggers again this error.

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Issues sending to gmail and yahoo e-mails
by jkoral＠luc.edu Sept. 10, 2025

Sept. 10, 2025

Has anyone experienced recent issues with Mailman3 not being able to send to gmail and yahoo e-mail addresses. I am trying to figure out if Google has our server blocked or not. When I send a manual e-mail from the server, the my yahoo e-mail gets delivered, but the gmail one does not. Here is the message I get in the logs when trying to send to the gmail address from the command line, but I do not get anything when it tries to send from Mailman. 2025-09-09T18:57:09.344493-05:00 lstprdls01 postfix/smtp[3544622]: BE67F1C09AF: to=<jmjk(a)gmail.com>, relay=gmail-smtp-in.l.google.com[173.194.194.26]:25, delay=0.55, delays=0.01/0/0.27/0.27, dsn=5.7.26, status=bounced (host gmail-smtp-in.l.google.com[173.194.194.26] said: 550-5.7.26 Your email has been blocked because the sender is unauthenticated. 550-5.7.26 Gmail requires all senders to authenticate with either SPF or DKIM. 550-5.7.26 550-5.7.26 Authentication results: 550-5.7.26 DKIM = did not pass 550-5.7.26 SPF [lstprdls01.xxx.xxx.edu] with ip: [xxx.xxx.10.33] = did not pass 550-5.7.26 550-5.7.26 For instructions on setting up authentication, go to 550 5.7.26 https://support.google.com/mail/answer/81126#authentication 8926c6da1cb9f-50d8f268ab7si36484097173.142 - gsmtp (in reply to end of DATA command)) I added DMARC mitigation to this list with "Replace From: with list address" and "DMARC Mitigate unconditinally - Yes" The DMARC Address I have in there is ^.*(a)gmail\.com$ Do I have to do anything else? Restart any services or anything?

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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)_/¯ :-)

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Hyperkitty Text/Markdown/HTML
by Sam Darwin Sept. 9, 2025

Sept. 9, 2025

How about a feature to include "HTML" in the current Hyperkitty choices of (Text or Markdown) rendering? A sanitizer must be used to prevent malicious attacks. https://github.com/messense/nh3 . lxml is another package that processes html. A sanitizer would be helpful for more aspects. Permit a limited set of markdown so that messages still appear professional. Gitlab/Github don't allow arbitrary fonts or font sizes, right? Mostly remove these tags. A way that code blocks could be presented: determine an established list of known codeblock styles. Configure the sanitizer to permit this range of fonts or styling elements. By allowing them through the filter, a code styling is rendered. (It is permitted/allowed to be rendered.) Even better, when the sanitizer recognizes the fonts, it replaces them with an "official" set of codeblock fonts. Otherwise, if other font tags are entirely removed, if they are missing, the email client or web ui will decide the font selection, and it will appear "standard". In order for both email clients and Hyperkitty to view the same result, the sanitizer should ideally be applied to outgoing emails as well as rendering in the UI. That means this feature would affect more than just Hyperkitty. (i.e. mailman-core). Although, that could be implemented as a separate step, until which time emails would get a full range of HTML, without sanitizing. In this scheme, ensure outgoing emails are multi-part MIME with plain text and html versions. Some of our users are really in favor of more formatting. Others prefer plain text. Those who prefer plain text have various arguments that HTML messages will be rendered badly, and won't be legible. Questions: 1. Would "multi-part MIME with plain text and html versions both" solve the problem for users who prefer plain text? 2. What percentage of email clients that support HTML formatting when sending will also include a plain text rendering of the same content in the outgoing message? 3. Is it usually the responsibility of a receiving mail client to be able to convert HTML to plain text if the user requests it? 4. When mailman-core receives and then sends out a message, can it receive HTML, generate a plain-text version, and then send both? Thoughts?

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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.

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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

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Dependency nntplib not found
by qno-mailman＠qno.de Sept. 5, 2025

Sept. 5, 2025

Hi all, next problem. I got a proper configuration (so i thought, but when starting, mailman3 exits. The output of journalctl -xeu mailman3.service ends with: Sep 05 17:33:23 bywater mailman[223227]: File "/opt/mailman/venv/lib/python3.13/site-packages/mailman/commands/cli_ga> Sep 05 17:33:23 bywater mailman[223227]: import nntplib Sep 05 17:33:23 bywater mailman[223227]: ModuleNotFoundError: No module named 'nntplib' Sep 05 17:33:23 bywater systemd[1]: mailman3.service: Control process exited, code=exited, status=1/FAILURE ░░ Subject: Unit process exited ░░ Defined-By: systemd ░░ Support: http://www.ubuntu.com/support ░░ ░░ An ExecStart= process belonging to unit mailman3.service has exited. ░░ ░░ The process' exit code is 'exited' and its exit status is 1. Sep 05 17:33:23 bywater systemd[1]: mailman3.service: Failed with result 'exit-code'. ░░ Subject: Unit failed ░░ Defined-By: systemd ░░ Support: http://www.ubuntu.com/support ░░ ░░ The unit mailman3.service has entered the 'failed' state with result 'exit-code'. Sep 05 17:33:23 bywater systemd[1]: Failed to start mailman3.service - GNU Mailing List Manager. ░░ Subject: A start job for unit mailman3.service has failed ░░ Defined-By: systemd ░░ Support: http://www.ubuntu.com/support ░░ ░░ A start job for unit mailman3.service has finished with a failure. I googled and found that module nntplib is no more part of python since python-3.13. How can i fullfill (or avoid?) this dependency? TIA QNo

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After server upgrade debian 11→12 and reinstalling everything in (venv), I got this error when accessing → mailman3/lists
by Wikinaut Sept. 5, 2025

Sept. 5, 2025

File "/opt/mailman/venv/lib/python3.11/site-packages/mailmanclient/restbase/connection.py", line 160, in call raise HTTPError(params.get('url'), response.status_code, urllib.error.HTTPError: HTTP Error 500: {"title": "500 Internal Server Error"} ERROR 2025-08-16 19:26:03,720 6588 django.request Internal Server Error: /mailman3/lists/mylist.myserver.tld Can anyone help? Other things do work, including archives, users, domains etc.

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