- Mailman-users - lists.mailman3.org

Error: Module "django.contrib.sessions.serializers" does not define a "PickleSerializer" attribute/class
by Torge Riedel Dec. 22, 2024

Dec. 22, 2024

Dears, I just upgraded my Server from Ubuntu 22.04 to 24.04 and I get the following error when accessing the web page. Django is 5.0.10 Postorius is 1.3.13 Any help is welcome. Thank you and kind regards Torge Internal Server Error:/mailman3/lists/ ImportError at/mailman3/lists/ Module "django.contrib.sessions.serializers" does not define a "PickleSerializer" attribute/class Request Method: GET Request URL:https://lists.lsv-pinneberg.de/mailman3/lists/ Django Version: 5.0.10 Python Executable: /usr/bin/uwsgi-core Python Version: 3.12.3 Python Path: ['.', '', '/usr/lib/python312.zip', '/usr/lib/python3.12', '/usr/lib/python3.12/lib-dynload', '/opt/mailman/web/venv/lib/python3.12/site-packages'] Server time: Sun, 22 Dec 2024 11:05:00 +0100 Installed Applications: ('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', 'rest_framework', 'django_gravatar', 'compressor', 'haystack', 'django_extensions', 'django_q', 'allauth', 'allauth.account', 'allauth.socialaccount') Installed Middleware: ('django.contrib.sessions.middleware.SessionMiddleware', 'django.middleware.common.CommonMiddleware', 'django.middleware.csrf.CsrfViewMiddleware', 'django.middleware.locale.LocaleMiddleware', 'django.contrib.auth.middleware.AuthenticationMiddleware', 'django.contrib.messages.middleware.MessageMiddleware', 'django.middleware.clickjacking.XFrameOptionsMiddleware', 'django.middleware.security.SecurityMiddleware', 'django_mailman3.middleware.TimezoneMiddleware', 'postorius.middleware.PostoriusMiddleware', 'allauth.account.middleware.AccountMiddleware') Traceback (most recent call last): File "/opt/mailman/web/venv/lib/python3.12/site-packages/django/utils/module_loading.py", line 30, in import_string return cached_import(module_path, class_name) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/opt/mailman/web/venv/lib/python3.12/site-packages/django/utils/module_loading.py", line 16, in cached_import return getattr(module, class_name) ^^^^^^^^^^^^^^^^^^^^^^^^^^^ The above exception (module 'django.contrib.sessions.serializers' has no attribute 'PickleSerializer') was the direct cause of the following exception: File "/opt/mailman/web/venv/lib/python3.12/site-packages/django/core/handlers/exception.py", line 55, in inner response = get_response(request) ^^^^^^^^^^^^^^^^^^^^^ File "/opt/mailman/web/venv/lib/python3.12/site-packages/django/utils/deprecation.py", line 133, in __call__ response = self.process_request(request) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/opt/mailman/web/venv/lib/python3.12/site-packages/django/contrib/sessions/middleware.py", line 20, in process_request request.session = self.SessionStore(session_key) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/opt/mailman/web/venv/lib/python3.12/site-packages/django/contrib/sessions/backends/db.py", line 16, in __init__ super().__init__(session_key) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/opt/mailman/web/venv/lib/python3.12/site-packages/django/contrib/sessions/backends/base.py", line 47, in __init__ self.serializer = import_string(settings.SESSION_SERIALIZER) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/opt/mailman/web/venv/lib/python3.12/site-packages/django/utils/module_loading.py", line 32, in import_string raise ImportError( ^^^^^^^^^^ Exception Type: ImportError at/mailman3/lists/ Exception Value: Module "django.contrib.sessions.serializers" does not define a "PickleSerializer" attribute/class Raised during: postorius.views.list.list_index

1 1

Subscription requires confirmation when list is set as Open
by Mark Dec. 21, 2024

Dec. 21, 2024

Hi All, I have a list set with the following ... List Settings > Member Policy # Subscription Policy = "Open" When I subscribe with an email address that has been used (subscribed/unsubscribed) on any other list (on that server), the address is subscribed automatically. However, if I subscribe with an address that has never been used before, I receive an email that requires me to confirm the subscription. The subscription is also held in the administrator's "Subscription requests: Pending confirmation". This happens when subscribing by both email and the web UI. Ideally, as the Policy is set as "Open", the subscription of any new email address should be added automatically. Have I missed a configuration setting somewhere? Any advice really appreciated. Regards, Mark $ mailman info GNU Mailman 3.3.9 (Tom Sawyer) Python 3.11.2 (main, Mar 13 2023, 12:18:29) [GCC 12.2.0] Venv installation on Debian

3 7

Re: mail stuck in "out" queue
by Dmitry Makovey Dec. 18, 2024

Dec. 18, 2024

So our mailman got stuck again, but I did follow your advise. Here's what I've found: On 3/29/19 2:58 PM, Mark Sapiro wrote: > On 3/29/19 2:28 PM, Dmitry Makovey wrote: >> I've had encountered this situation now twice: mail is being stuck in >> "out" queue and nothing in the logs indicates the issue. Is there a way >> to ask mailman-core politely to attempt delivery (perhaps with increased >> debugging in the logs) *without* restarting the core (which does solve >> *this* problem but creates other problems, like availability of the >> mailman as a whole) > > > Is the "out" runner running? yes: # docker top mailman-core | grep -F out: 100 21681 13215 0 Mar28 ? 01:14:16 /usr/local/bin/python /usr/local/bin/runner --runner=out:0:1 -C /etc/mailman.cfg > ps -fwwA |grep runner=out > > If not, you should be able to start it as the Mailman user with a > command like > > /path/to/python3 /path/to/mailman/bin/runner -C /path/to/mailman.cfg > --runner=out:0:1 > > See 'ps -fwwA|grep runner' for examples > > If the out runner is running, is there a file named *.bak along with all > the *.pck files in queue/out/ there is one, yes: # ls -l /srv/mail/mailman/core/var/queue/out/*.bak -rw-rw---- 1 100 65533 21512 Apr 14 19:45 /srv/mail/mailman/core/var/queue/out/1555296331.8386078+2c905825b82708e5a682b872b0aff320c9dd0b2e.bak what does it indicate and what should my steps be to resolve this (other than restarting queues)? > And if it's not, is there anything in Mailman's logs to indicate why it > died? > > Also, 'mailman restart' should only take a matter of seconds, but if the > out runner is running but not processing its queue, I think sending it a > SIGINT should restart it. SIGINT killed the process allright, but it didn't auto-respawn. I ended up spawning it with: /usr/local/bin/python /usr/local/bin/runner --runner=out:0:1 -C /etc/mailman.cfg but soon realized it doesn't go to background nicely so I've nohup'ed it in the end. but it did solve my problem. -- Sr System and DevOps Engineer SoM IRT

6 17

MM2 to MM3 on different server. Process to move everything at once.
by jkoral＠luc.edu Dec. 12, 2024

Dec. 12, 2024

Is there a way to move everything from an MM2 server to a new MM3 server (on separate servers)? I have been migrating individual lists, which seems to work OK, but there are so many lists that it would have to be done over a longer period of time. I was hoping I can just migrate a database or something and have it all done in an hour or so. Thoughts?

3 2

Blocking / throttling unwanted signup attempts
by David Newman Dec. 12, 2024

Dec. 12, 2024

Greetings. On a server running Postfix and Mailman 3.3.9, the Postfix queue shows 20-30 entries/day like this mildly obfuscated example: 4Y8M1n5v5VzHSpQ 2023 Thu Dec 12 10:48:45 postmaster(a)example.com (host gmail-smtp-in.l.google.com[142.250.101.26] said: 450-4.2.1 The user you are trying to contact is receiving mail at a rate that 450-4.2.1 prevents additional messages from being delivered. Please resend your 450-4.2.1 message at a later time. If the user is able to receive mail at that 450-4.2.1 time, your message will be delivered. For more information, go to 450 4.2.1 https://support.google.com/mail/?p=ReceivingRate 41be03b00d2f7-7fd409820c4si13081249a12.439 - gsmtp (in reply to RCPT TO command)) baduser2000(a)gmail.com From the Mailman logs it appears these are responses to signup attempts to a publicly advertised list hosted on this server. The signups come from many different Gmail addresses. I'm concerned about being part of a botnet. Other than taking the list private, is there some other means I can use to block/throttle these signup attempts? Thanks dn

1 0

hyperkitty threads by month list UI?
by Bryan Fields Dec. 11, 2024

Dec. 11, 2024

Does anyone have a better way to display the threads by month in hyperkitty? I'm thinking like a selector that could show year and then you click on year and it gives months. As of now it expands the months out and there's over 300 lines to scroll down on for threads. Example: https://keekles.org/~bryan/longlisthyperkitty.png Thanks, -- Bryan Fields 727-409-1194 - Voice http://bryanfields.net

1 0

Enable delivery
by Hirayama, Pat Dec. 10, 2024

Dec. 10, 2024

Greetings, I'm finding something a bit odd with our listserv. Some of the members of some of the lists are reporting that they aren't receiving messages sent to the list. When I review the member options for the person in question, I see that Delivery Status shows nothing selected (i.e. neither radio button is selected for Enabled or Disabled). If I select Enabled and Save, then delivery starts working for that user. There are other members of the list that have neither Enabled or Disabled selected, but they are working. Which also seems to mean that when I run: mailman members --nomail any listname@listserv Nothing is returned. If anyone has any ideas about why this might be the case, or how I might proactively identify other members who aren't receiving mail, that would be appreciated. Alternately, any thoughts on how I might force all members to Delivery Status Enabled, that would also be great. 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 4

How to Increase outgoing mail volume for Mailman 3
by Brian Carpenter Dec. 9, 2024

Dec. 9, 2024

Hello everyone, We had a new client come on board that brought a list that had the largest out-going mail volume that I have ever dealt with. So I did what any sane server administrator would do that is running Mailman 3: I ran to Mark Sapiro for help! Here is what the Sage of all things Mailman counseled me to do: 1. Disabled VERP delivery. VERP can help improve mail delivery by delivering 1 message per SMTP transaction (I think I got that right). Using VERP is counter-productive as it can seriously delay outgoing mail delivery for a high-volume list. So you can use something like the following in the MTA section of your mailman.cfg: [mta] verp_confirmations: no verp_personalized_deliveries: no verp_delivery_interval: 0 2. I configured Mailman 3 to run 4 outgoing runners. The default is 1. This action was the game changer. It allows Mailman to handle 4 incoming messages at a time instead of 1. My client's incoming list volume was high enough where it was overwhelming the single outgoing runner. Here is what I added to the mailman.cfg file: [runner.out] instances: 4 Doing this step immediately solved the backlog in var/queue/out. 3. If you start up with a new server for a list that is high volume then keep an eye out for Proofpoint and Vade Security as they will block your new IP address quicker than Mark Sapiro can say "This is a bug. See <some Gitlab.com url>" Mark, thank you! -- Brian Carpenter Harmonylists.com Emwd.com

5 10

Hyperkitty search on Message-ID?
by Bryan Fields Dec. 6, 2024

Dec. 6, 2024

I've been working with a rather large import and am finding that I can't seem to get the search on a Message-ID: to return anything. I can do this via the DB, and then look at the message, but this is less than ideal, and requires DB access. > mailmanweb=> select message_id_hash from hyperkitty_email where message_id = '19991231211903.C2870(a)abq-mail-01.ihighway.net'; > message_id_hash > ---------------------------------- > IWKEJSPTJODEHARQ2VI6BEFQKNEJYM22 Any ideas how to get it indexing the ID so a layperson can search on it? -- Bryan Fields 727-409-1194 - Voice http://bryanfields.net

2 3

Aborted connection message in log in every 5 minutes
by zoltan＠circle-interactive.co.uk Dec. 3, 2024

Dec. 3, 2024

Hi Everyone, we have mailman 3.3.8 venv test installation which in general works fine however our mysql error log is filled up with messages below because they are so frequent. 2023-02-24 0:31:30 199567 [Warning] Aborted connection 199567 to db: 'mailman' user: 'mailman' host: 'localhost' (Got an error reading communication packets) 2023-02-24 0:36:30 201063 [Warning] Aborted connection 201063 to db: 'mailman' user: 'mailman' host: 'localhost' (Got an error reading communication packets) 2023-02-24 0:41:31 202559 [Warning] Aborted connection 202559 to db: 'mailman' user: 'mailman' host: 'localhost' (Got an error reading communication packets) 2023-02-24 0:46:31 204056 [Warning] Aborted connection 204056 to db: 'mailman' user: 'mailman' host: 'localhost' (Got an error reading communication packets) As suggested here https://lists.mailman3.org/archives/list/mailman-users@mailman3.org/thread/… I tried to correlate with error logs and /opt/mailman/web/logs/mailmanweb.log shows some hyperkitty.lib.utils Failed to update the fulltext index: (2002, "Can't connect to local MySQL server through socket '/run/mysqld/mysqld.sock' (111)" /opt/mailman/web/logs/uwsgi-error.log Message: OperationalError(2013, "Lost connection to MySQL server at 'handshake: reading initial communication packet', sy stem error: 104") but they have not such frequency so unsure if they are related. Thanks for the suggestions

6 16