- Mailman-users - lists.mailman3.org

Digestion debugging
by John Price Feb. 21, 2026

Feb. 21, 2026

I'm having trouble getting digests to work. When I try to manually send one, it does nothing, and then the digest gets deleted (I guess?). I would love it if the documentation explained a bit more how the process works. How are the files gathered? What file can I backup and later restore if I'm debugging it? Also, how are the digest issue and volume numbers work? Is there any way to control that? Since I've been running digests for decades, can I set the volume and issue to what I want so that the numbering continues from where the other installation left off? Thanks, John -- Why do they lock gas station bathrooms? Are they afraid someone will clean them? Have a great day and don't forget to laugh! http://www.gcfl.net (The Good, Clean Funnies List): Good, clean daily funnies you can safely tell your Mom!

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Error After Posted Message in Archive
by msok＠lalawlibrary.org Feb. 21, 2026

Feb. 21, 2026

Hi All, After I started a new threat and posted message, I received an error. Where should I take a look into this issue? Thanks, Marin

2 1

Try to Implement Template for The message sent to subscribers when a subscription confirmation is required
by msok＠lalawlibrary.org Feb. 20, 2026

Feb. 20, 2026

My NGINX configure redirect for HTTP to HTTPS. For the domain below, mailman.example.com = my actual domain -NGINX config server { # EXTERNAL: Redirects all port 80 traffic to HTTPS listen 80 default_server; listen [::]:80 default_server; # server_name mailman.example.com; server_name mailman.example.com; # no issue for accessing from outside, it will redirect to https return 301 https://$host$request_uri; # Redirect http to https server_tokens off; } # INTERNAL: Listens ONLY on 127.0.0.1 to handle local HTTP requests server { listen 127.0.0.1:80; server_name localhost; location / { include uwsgi_params; uwsgi_pass unix:/run/mailman3-web/uwsgi.sock; uwsgi_param HTTP_HOST $host; } location /mailman3/static { alias /var/lib/mailman3/web/static; } location /mailman3/static/favicon.ico { alias /var/lib/mailman3/web/static/postorius/img/favicon.ico; } -The URL syntax https://mailman.example.com/mailman3/lists/list-id/confirm/?token=$token -The error message when tried to add subscriber HTTP Error 400: HTTPSConnectionPool(host='localhost', port=443): Max retries exceeded with url: /postorius/api/templates/list/list-id/list:user:action:subscribe (Caused by SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1029)'))) Please help! Thanks, Marin

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Mailman3 Queues Documentation
by msok＠lalawlibrary.org Feb. 20, 2026

Feb. 20, 2026

Hi Everyone, I'm looking for a documentation for the explanation about the Queues in Mailman3. By the way, I'm new, I just got 5 shunt under Queues. Mailman Core Version: GNU Mailman 3.3.10 (Tom Sawyer) Mailman Core API Version: 3.1 Mailman Core Python Version: 3.13.5 (main, Jun 25 2025, 18:55:22) [GCC 14.2.0] Queues archive 0 bad 0 bounces 0 command 0 digest 0 in 0 nntp 0 out 0 pipeline 0 retry 0 shunt 5 virgin 0 Thanks, Marin

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Confirmation emails aren't sent to users.
by Ibiam Chihurumnaya Feb. 18, 2026

Feb. 18, 2026

Confirmation emails aren't being sent to users and there's nothing in the logs that make it obvious what's happening. ERROR 2026-02-12 14:15:11,250 1985547 django.request Internal Server Error: /archives/list/soas(a)lists.sugarlabs.org/thread/CVAUPR7L6AYTNZXIWHQ263A6ZJUROTRC/ 233825 Traceback (most recent call last): 233826 File "/opt/mailman/venv/lib/python3.10/site-packages/django/core/handlers/exception.py", line 55, in inner 233827 response = get_response(request) 233828 File "/opt/mailman/venv/lib/python3.10/site-packages/django/core/handlers/base.py", line 197, in _get_response 233829 response = wrapped_callback(request, *callback_args, **callback_kwargs) 233830 File "/opt/mailman/venv/lib/python3.10/site-packages/hyperkitty/lib/view_helpers.py", line 137, in inner 233831 return func(request, *args, **kwargs) 233832 File "/opt/mailman/venv/lib/python3.10/site-packages/hyperkitty/views/thread.py", line 238, in thread_index 233833 return render(request, "hyperkitty/thread.html", context=context) 233834 File "/opt/mailman/venv/lib/python3.10/site-packages/django/shortcuts.py", line 25, in render 233835 content = loader.render_to_string(template_name, context, request, using=using) 233836 File "/opt/mailman/venv/lib/python3.10/site-packages/django/template/loader.py", line 62, in render_to_string 233837 return template.render(context, request) 233838 File "/opt/mailman/venv/lib/python3.10/site-packages/django/template/backends/django.py", line 107, in render 233839 return self.template.render(context) 233840 File "/opt/mailman/venv/lib/python3.10/site-packages/django/template/base.py", line 172, in render 233841 return self._render(context) 233842 File "/opt/mailman/venv/lib/python3.10/site-packages/django/template/base.py", line 164, in _render 233843 return self.nodelist.render(context) 233844 File "/opt/mailman/venv/lib/python3.10/site-packages/django/template/base.py", line 1018, in render 233845 return SafeString("".join([node.render_annotated(context) for node in self])) 233846 File "/opt/mailman/venv/lib/python3.10/site-packages/django/template/base.py", line 1018, in <listcomp> 233847 return SafeString("".join([node.render_annotated(context) for node in self])) 233848 File "/opt/mailman/venv/lib/python3.10/site-packages/django/template/base.py", line 979, in render_annotated 233849 return self.render(context) 233850 File "/opt/mailman/venv/lib/python3.10/site-packages/django/template/loader_tags.py", line 159, in render 233851 return compiled_parent._render(context) 233852 File "/opt/mailman/venv/lib/python3.10/site-packages/django/template/base.py", line 164, in _render 233853 return self.nodelist.render(context) 233854 File "/opt/mailman/venv/lib/python3.10/site-packages/django/template/base.py", line 1018, in render 233855 return SafeString("".join([node.render_annotated(context) for node in self])) 233856 File "/opt/mailman/venv/lib/python3.10/site-packages/django/template/base.py", line 1018, in <listcomp> 233857 return SafeString("".join([node.render_annotated(context) for node in self])) 233858 File "/opt/mailman/venv/lib/python3.10/site-packages/django/template/base.py", line 979, in render_annotated 233859 return self.render(context) 233860 File "/opt/mailman/venv/lib/python3.10/site-packages/django/template/loader_tags.py", line 65, in render 233861 result = block.nodelist.render(context) 233862 File "/opt/mailman/venv/lib/python3.10/site-packages/django/template/base.py", line 1018, in render 233863 return SafeString("".join([node.render_annotated(context) for node in self])) 233864 File "/opt/mailman/venv/lib/python3.10/site-packages/django/template/base.py", line 1018, in <listcomp> 233865 return SafeString("".join([node.render_annotated(context) for node in self])) 233866 File "/opt/mailman/venv/lib/python3.10/site-packages/django/template/base.py", line 979, in render_annotated 233867 return self.render(context) 233868 File "/opt/mailman/venv/lib/python3.10/site-packages/django/template/loader_tags.py", line 210, in render 233869 return template.render(context) 233870 File "/opt/mailman/venv/lib/python3.10/site-packages/django/template/base.py", line 174, in render 233871 return self._render(context) 233872 File "/opt/mailman/venv/lib/python3.10/site-packages/django/template/base.py", line 164, in _render 233873 return self.nodelist.render(context) 233874 File "/opt/mailman/venv/lib/python3.10/site-packages/django/template/base.py", line 1018, in render 233875 return SafeString("".join([node.render_annotated(context) for node in self])) 233876 File "/opt/mailman/venv/lib/python3.10/site-packages/django/template/base.py", line 1018, in <listcomp> 233877 return SafeString("".join([node.render_annotated(context) for node in self])) 233878 File "/opt/mailman/venv/lib/python3.10/site-packages/django/template/base.py", line 979, in render_annotated 233879 return self.render(context) 233880 File "/opt/mailman/venv/lib/python3.10/site-packages/django/template/base.py", line 1077, in render 233881 output = self.filter_expression.resolve(context) 233882 File "/opt/mailman/venv/lib/python3.10/site-packages/django/template/base.py", line 750, in resolve 233883 new_obj = func(obj, *arg_vals) 233884 File "/opt/mailman/venv/lib/python3.10/site-packages/hyperkitty/templatetags/decorate.py", line 42, in render 233885 return mark_safe(text_renderer(content)) 233886 File "/opt/mailman/venv/lib/python3.10/site-packages/mistune/markdown.py", line 120, in __call__ 233887 return self.parse(s)[0] 233888 File "/opt/mailman/venv/lib/python3.10/site-packages/mistune/markdown.py", line 93, in parse 233889 self.block.parse(state) 233890 File "/opt/mailman/venv/lib/python3.10/site-packages/mistune/block_parser.py", line 458, in parse 233891 end_pos2 = self.parse_method(m, state) 233892 File "/opt/mailman/venv/lib/python3.10/site-packages/mistune/core.py", line 216, in parse_method 233893 return func(m, state) 233894 File "/opt/mailman/venv/lib/python3.10/site-packages/mistune/block_parser.py", line 369, in parse_block_quote 233895 text, end_pos = self.extract_block_quote(m, state) 233896 File "/opt/mailman/venv/lib/python3.10/site-packages/mistune/block_parser.py", line 346, in extract_block_quote 233897 end_pos = self.parse_method(m4, state) 233898 File "/opt/mailman/venv/lib/python3.10/site-packages/mistune/core.py", line 216, in parse_method 233899 return func(m, state) 233900 File "/opt/mailman/venv/lib/python3.10/site-packages/mistune/block_parser.py", line 388, in parse_list 233901 return parse_list(self, m, state) 233902 File "/opt/mailman/venv/lib/python3.10/site-packages/mistune/list_parser.py", line 64, in parse_list 233903 groups = _parse_list_item(block, bullet, groups, token, state, rules) 233904 File "/opt/mailman/venv/lib/python3.10/site-packages/mistune/list_parser.py", line 178, in _parse_list_item 233905 block.parse(child, rules) 233906 File "/opt/mailman/venv/lib/python3.10/site-packages/mistune/block_parser.py", line 458, in parse 233907 end_pos2 = self.parse_method(m, state) 233908 File "/opt/mailman/venv/lib/python3.10/site-packages/mistune/core.py", line 214, in parse_method 233909 assert lastgroup 233910 AssertionError This is the last error in mailmanweb.log, the errors before that are similar.

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Receiving Email from ListName-bounce@Domain for Unsubcribe
by msok＠lalawlibrary.org Feb. 16, 2026

Feb. 16, 2026

Hello, On my new MM3 that I just installed, I testing unsubscribe user from mailing list. User received email for the unsubscribe in subject line as 'You have been unsubscribed from the Test1 mailing list' with email address 'test1-bounces@domain'. It should receive from test1-unsubscribe@domain instead. Where should I look into this? or configure it. Thanks, Marin

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Reply to Confirmation Email During Subscribe Process Receiving ListName-Bounce@Domain
by msok＠lalawlibrary.org Feb. 16, 2026

Feb. 16, 2026

I'm new to MM3. I just finished install it. I setup a test list with default settings as test1@domain. I added a user to the list via Mass Subscription with Pre confirm check and Pre approved check. Inside the user inbox in GMail account received email from address test1-confirm@domain ( I added this erp_confirm_format: $address to [mta] in /etc/mailman3/mailman.cfg) with Your confirmation is needed to join the test1@domain mailing list. I replied to the email and I received another email as test1-bounce@domain. I went to my mailing test1@domain. I found a user that I tried to add list in 'Subscription request' under 'Pending Confirmation'. Could you help me to troubleshooting on this? Why I received a list-bounce@domain instead of successfully added or something. Thanks, Marin

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Internal Server Error: /mailman3/postorius/lists/.../held_messages - humanize: where to put?
by Flo Feb. 16, 2026

Feb. 16, 2026

Hi, I have setup in Debian Trixie mailman3-full and came that far, that I have created a mailing list. I can sent emails to the members. However when I send from an email which is non-member the message is held. If I want to accept this message as list admin, I get: `An error occurred while processing your request.` And I get an email: `Internal Server Error: /mailman3/postorius/.../held_messages TemplateSyntaxError at /postorius/lists/.../held_messages 'humanize' is not a registered tag library. Must be one of: account admin_list admin_modify admin_urls allauth bootstrap_tags cache compress d_gravatar date_helpers debugger_tags decorate gravatar highlight highlighting hk_generic hk_haystack i18n indent_text l10n log markdown membership_helpers more_like_this nav_helpers p_gravatar pagination postorius_helpers rest_framework socialaccount static syntax_color tz widont Request Method: GET Request URL: https://.../mailman3/postorius/lists/.../held_messages Django Version: 4.2.23 Python Executable: /usr/bin/uwsgi-core Python Version: 3.13.5 Python Path: ['.', '', '/usr/lib/python313.zip', '/usr/lib/python3.13', '/usr/lib/python3.13/lib-dynload', '/usr/local/lib/python3.13/dist-packages', '/usr/lib/python3/dist-packages', '/usr/lib/python3/dist-packages/setuptools/_vendor'] . . .` humanize is in the INSTALLED_APPS section in /usr/share/mailman3-web/settings.py. In this file I I configured Django. However it's not in the Python path as written in the error email above. So maybe I have to find a different settings file. Can anyone advise me where I can find the error I have in my configuration? Thanks in advance. Flo

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Inaccessible User Profile
by awingnut Feb. 14, 2026

Feb. 14, 2026

I have a long time user that cannot access their profile. When I click on users/members then that user as superuser, I get this error. Page not found This page either doesn't exist, or it moved somewhere else. When I click that uers manage button, the page comes up but it says there are no subscriptions. This user was subscribed as of couple of days ago. Can this be fixed via admin functions?

2 1

Issues with Mail delivery after Mailman 3 installation
by Ibiam Chihurumnaya Feb. 12, 2026

Feb. 12, 2026

I finished installing mailman3, setup lmtp and smtp for mail delivery and I followed the instructions on the mailman 3 installation page. Mail delivery doesn't work and the logs show this; Jan 31 12:53:53 lists postfix/lmtp[4131588]: 3B8121A89BD: to=<systems(a)lists.sugarlabs.org>, relay=127.0.0.1[127.0.0.1]:24, delay=11119, delays=11072/0.01/0.01/47, dsn=4.3.0, status=deferred (host 127.0.0.1[127.0.0.1] said: 451 4.3.0 <systems(a)lists.sugarlabs.org> Temporary internal error (in reply to RCPT TO command)) 106029 Jan 31 12:53:53 lists postfix/lmtp[4131587]: 052BB1A8975: to=<mailman(a)lists.sugarlabs.org>, orig_to=<mailman>, relay=localhost[127.0.0.1]:24, delay=1432, delays=1385/0.02/0.01/47, dsn=4.3.0, status=deferred (host localhost[127.0.0.1] said: 451 4.3.0 <mailman(a)lists.sugarlabs.org> Temporary internal error (in reply to RCPT TO command)) Jan 31 12:53:53 lists dovecot: lmtp(4131586): Disconnect from 127.0.0.1: Logged out (state=READY) Jan 31 12:53:53 lists postfix/local[4131582]: F2DB61A8952: passing <mailman(a)lists.sugarlabs.org> to transport=lmtp Jan 31 12:53:53 lists dovecot: lmtp(4131590): Disconnect from 127.0.0.1: Logged out (state=READY) Jan 31 12:53:53 lists dovecot: lmtp(4131589): Disconnect from 127.0.0.1: Logged out (state=READY) Jan 31 12:53:53 lists postfix/local[4131584]: D172A1A8A0E: passing <mailman(a)lists.sugarlabs.org> to transport=lmtp Jan 31 12:53:53 lists dovecot: lmtp(4131586): Connect from 127.0.0.1 Jan 31 12:53:53 lists dovecot: lmtp(4131589): Connect from 127.0.0.1 Jan 31 12:53:54 lists postfix/lmtp[4128841]: connect to localhost[::1]:24: Connection refused Jan 31 12:53:54 lists postfix/lmtp[4128840]: connect to localhost[::1]:24: Connection refused Jan 31 12:53:54 lists postfix/lmtp[4128841]: 348981A8A2A: to=<mailman(a)lists.sugarlabs.org>, orig_to=<mailman>, relay=none, delay=113, delays=0.04/52/61/0, dsn=4.4.1, status=deferred (connect to localhost[::1]:24: Connection refused) Jan 31 12:53:54 lists postfix/lmtp[4128840]: 5382D1A8A27: to=<mailman(a)lists.sugarlabs.org>, orig_to=<mailman>, relay=none, delay=173, delays=0.02/111/61/0, dsn=4.4.1, status=deferred (connect to localhost[::1]:24: Connection refused) Jan 31 12:53:56 lists dovecot: lmtp(4128842): Disconnect from 127.0.0.1: Connection closed (state=READY) Jan 31 12:53:56 lists dovecot: lmtp(4127392): Disconnect from 127.0.0.1: Connection closed (state=READY) Jan 31 12:54:02 lists postfix/pickup[4131579]: 1D3E71A8A1C: uid=1005 from=<mailman> Jan 31 12:54:02 lists postfix/cleanup[4131852]: 1D3E71A8A1C: message-id=<20260131205402.1D3E71A8A1C(a)lists.sugarlabs.org> Jan 31 12:54:02 lists postfix/qmgr[4131580]: 1D3E71A8A1C: from=<mailman(a)lists.sugarlabs.org>, size=919, nrcpt=1 (queue active) Jan 31 12:54:53 lists dovecot: auth: Fatal: passdb passwd-file: Missing args Jan 31 12:54:53 lists dovecot: master: Error: service(auth): command startup failed, throttling for 60.000 secs Jan 31 12:54:53 lists dovecot: lmtp(mailman(a)lists.sugarlabs.org)<4131586><qMl1NuFrfmkCCz8AOj1W/w>: Error: auth-master: userdb lookup(mailman(a)lists.sugarlabs.org): Disconnected unexpectedly Jan 31 12:54:53 lists dovecot: lmtp(4131586): Error: lmtp-server: conn 127.0.0.1:56008 [2]: rcpt mailman(a)lists.sugarlabs.org: Failed to lookup user mailman(a)lists.sugarlabs.org: Internal error occurred. Refer to server log for more information. Jan 31 12:54:53 lists postfix/lmtp[4131585]: F2DB61A8952: host localhost[127.0.0.1] said: 451 4.3.0 <mailman(a)lists.sugarlabs.org> Temporary internal error (in reply to RCPT TO command) Jan 31 12:54:53 lists dovecot: lmtp(mailman(a)lists.sugarlabs.org)<4131589><kJd+NuFrfmkFCz8AOj1W/w>: Error: auth-master: userdb lookup(mailman(a)lists.sugarlabs.org): Disconnected unexpectedly Jan 31 12:54:53 lists dovecot: lmtp(4131589): Error: lmtp-server: conn 127.0.0.1:56014 [2]: rcpt mailman(a)lists.sugarlabs.org: Failed to lookup user mailman(a)lists.sugarlabs.org: Internal error occurred. Refer to server log for more information. Jan 31 12:54:53 lists postfix/lmtp[4131588]: D172A1A8A0E: host localhost[127.0.0.1] said: 451 4.3.0 <mailman(a)lists.sugarlabs.org> Temporary internal error (in reply to RCPT TO command) Jan 31 12:54:53 lists postfix/lmtp[4131585]: connect to localhost[::1]:24: Connection refused Jan 31 12:54:53 lists postfix/lmtp[4131588]: connect to localhost[::1]:24: Connection refused Jan 31 12:54:53 lists postfix/lmtp[4131585]: F2DB61A8952: to=<mailman(a)lists.sugarlabs.org>, orig_to=<mailman>, relay=none, delay=1492, delays=1385/47/60/0, dsn=4.4.1, status=deferred (connect to localhost[::1]:24: Connection refused) Jan 31 12:54:53 lists postfix/lmtp[4131588]: D172A1A8A0E: to=<mailman(a)lists.sugarlabs.org>, orig_to=<mailman>, relay=none, delay=591, delays=484/47/60/0, dsn=4.4.1, status=deferred (connect to localhost[::1]:24: Connection refused) Jan 31 12:54:53 lists postfix/local[4131582]: D92311A8A17: passing <mailman(a)lists.sugarlabs.org> to transport=lmtp Jan 31 12:54:53 lists postfix/local[4131584]: D52231A8A1A: passing <mailman(a)lists.sugarlabs.org> to transport=lmtp Jan 31 12:55:02 lists postfix/pickup[4131579]: 019161A8A2C: uid=1005 from=<mailman> Jan 31 12:55:02 lists postfix/cleanup[4131852]: 019161A8A2C: message-id=<20260131205502.019161A8A2C(a)lists.sugarlabs.org> Jan 31 12:55:02 lists postfix/qmgr[4131580]: 348981A8A2A: from=<mailman(a)lists.sugarlabs.org>, size=919, nrcpt=1 (queue active) Jan 31 12:55:02 lists postfix/qmgr[4131580]: 019161A8A2C: from=<mailman(a)lists.sugarlabs.org>, size=919, nrcpt=1 (queue active) Jan 31 12:55:02 lists postfix/qmgr[4131580]: 5382D1A8A27: from=<mailman(a)lists.sugarlabs.org>, size=919, nrcpt=1 (queue active) Jan 31 12:55:18 lists postfix/smtpd[4132212]: fatal: open dictionary: expecting "type:name" form instead of "dovecot" I setup lmtp with dovecot, and I have this in dovecot.conf; passdb passwd-file { driver = passwd-file } I also have these set in postfix main.cf; lmtp_sender_dependent_authentication = yes lmtp_sasl_auth_enable = yes lmtp_sasl_password_maps = hash:path_to_passwd_file I'm wondering if I need to disable sasl because I set dovecot not to use ssl because lmtp is only running internally.

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