June 2024 - Mailman-users - lists.mailman3.org

Mailman3 memory footprint
by Marc SCHAEFER June 6, 2024

June 6, 2024

Hello, It seems the mailman & mailman-web memory footprint are somewhat big. It looks a lot of instances are started. I have seen this: https://gitlab.com/mailman/mailman/-/issues/1050 and added this to the end of /etc/mailman3/mailman-web.py: Q_CLUSTER = { 'workers': 2, 'timeout': 300, 'save_limit': 100, 'orm': 'default', 'poll': 5, } However, it does not seem to really reduce the memory footprint. Any other suggestions? Thank you.

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Mailman3 doesn't send Mails to users (Debian12 with Plesk)
by marcus＠mbautze.de June 6, 2024

June 6, 2024

Hello, i already send this question to the plesk-forum but it seems that nobody there can help me :-( After updating from Debian 10 to 11 to 12, I now have mailman3 running on my server I then converted all lists from Mailman2 to Mailman3 following the instructions from mailman. I can access it via the web interface, manage everything etc. When I register on the web interface, I also receive the corresponding mails from Mailman (forgotten password...) Mails are also arriving, at least mails that are not allowed go into the mails to be approved. The problem, however, is that it does not send out any mails, nor do they appear in the archive. When I look in the Mailman-Log I find: May 16 01:44:55 2024 (6833) Cannot connect to SMTP server localhost on port 25 May 16 01:48:15 2024 (61252) error opening connection to nntp_host: localhost [Errno 111] Connection refused May 16 01:48:15 2024 (61252) NNTP error for list vereinsmitglieder(a)ludothek.de: [Errno 111] Connection refused The configuration of Mailman.cfg looks like this: incoming: mailman.mta.postfix.LMTP outgoing: mailman.mta.deliver.deliver smtp_host: localhost smtp_port: 25 smtp_user: smtp_pass: lmtp_host: 127.0.0.1 lmtp_port: 8024 In Mailman manuals I find hints that the transport routes have to be added to the Postfix-config. Doesn't Debian/Plesk do this automatically? Does anyone else have an idea what I need to change to get my mails out? I did the conversion from mailman2 to mailman3 with root because it didn't work with "sudo -u list "m, but the files stored in the file system all belong to list, so that shouldn't be the problem.

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Sending to mangled 'From' addresses.
by hansen June 5, 2024

June 5, 2024

All, Due to the DMARC mitigation action ‘Replace From: with list address’, it happens often on my lists that someone sends a message to a mangled address, hoping that the message goes to the person listed as the sender. This happens mostly because the mail clients collect previous addresses and use them when as type-ahead candidates for new messages, which may be unrelated to the lists. For example, say the mail client captures my address as “Allan Hansen via <listname>” <listaddress> then later, when the person wants to send a message to me, the type-ahead puts this string in the ’To:’ field: “Allan Hansen via <listname>” and, to make it worse, the actual email address, <listaddress>, is often hidden. The result is that the email gets sent to the list instead of to me, together with (often) personal and (sometimes) embarrassing information. Is there a way to reject messages sent to recipients where the name part of the recipient is of the above format, i.e., "Allan Hansen via <listname>" In other words, filtering is done on the name part of the recipient, not the address part. Should I get onto the other list to request this as an enhancement? Yours, Allan

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Sign and encrypt e-mail responses
by Markus Grandpré June 4, 2024

June 4, 2024

Dear List, is it possible to sign and encrypt all e-mail responses from the Mailman3 server with a digital certificate? Best regards, Markus Grandpré -- Markus Ludwig Grandpré Universität Konstanz Kommunikations-, Informations-, Medienzentrum (KIM) Abteilung IT-Dienste Forschung und Lehre, B803, Tel: ++49 7531 88 4342

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import21 detailed usage instructions in 2024
by Keith Christian June 3, 2024

June 3, 2024

1 Soon, I will be executing the first test imports from Mailman2.1 to Mailman3.9. 2 Planning to copy over the entire production Mailman2.1 to a new directory structure on the Mailman 3.9 machine. 3 Expecting that all .mbox and .pkl files will be present and no special work has to be done to bring them over will a "full" mailman2.1 copy. 4 Can the import21 program find the mailman2.1 .mbox and .pkl files on its own and process them? 5 Other than the mailman2.1 instance being shut down, any other prep that needs to be done? 6 Any special command line parameters to be aware of for import21? 7 Is there a list of troubleshooting steps for commonly encountered migration issues? Thanks. ------------------ Keith

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import21 caused a few mails to be sent out
by Marc SCHAEFER June 2, 2024

June 2, 2024

Hello, After importing a (big > 3000 subscribers) list with import21, I noticed the following: 36 mails went out from LIST-NAME-bounces to subscribers, but they apparently all bounced. Could those be subscribers that Mailman2 saw bouncing and added the appropriate flag, and Mailman3 sent a probe after the import21? I checked for one of the e-mail address and: Mailman2: - that e-mail has the [X] R flag for "noncourriel" (no delivery) Mailman3: - that e-mail is Delivery mode Regular, Bounces to 0 NB: in MM2 and MM3, all users are in Hold for moderation, that's normal. In addition, there are a few mails in /var/lib/mailman/messages for example that same user: one file, showing a bounce from a remote server. So my questions: 1) is this behaviour to "probe" already disabled addresses normal, and not "port over" the "don't deliver"? 2) why are those messages held in messages/ ? 3) should I then, before running import21, clean the MM2 installation of all those users with [X] R flag? If yes, is there a simple command? Thank you for pointers or help. PS: there was no trafic on that imported mailing-list yet, it's a test.

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