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

Mailman3 Docker persmission denied
by Commander456 Jan. 6, 2025

Jan. 6, 2025

Hello everyone, I recently installed the mailman-core Docker image (Version 0.5) and tried to create a list using the mailman commands inside the container. I used the --notify argument but doesn't receive any mail (I'm the list owner), However, inside the mailman.log I get the following error: Jan 06 20:54:25 2025 (156) Uncaught runner exception: [Errno 13] Permission denied: '/opt/mailman/var/queue/virgin/1736196864.6488764+2c5d24f89f86715d3deb3d0032735050cb9e29f8.pck' Jan 06 20:54:25 2025 (156) Traceback (most recent call last): File "/usr/lib/python3.12/site-packages/mailman/core/runner.py", line 164, in _one_iteration msg, msgdata = self.switchboard.dequeue(filebase) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/lib/python3.12/site-packages/mailman/core/switchboard.py", line 150, in dequeue with open(filename, 'rb') as fp: ^^^^^^^^^^^^^^^^^^^^ PermissionError: [Errno 13] Permission denied: '/opt/mailman/var/queue/virgin/1736196864.6488764+2c5d24f89f86715d3deb3d0032735050cb9e29f8.pck' Jan 06 20:54:25 2025 (156) Skipping and preserving unparseable message: 1736196864.6488764+2c5d24f89f86715d3deb3d0032735050cb9e29f8 These are my file permissions: mailman-core:/opt/mailman/var/queue# ls -l total 48 drwxrwx--- 2 mailman nogroup 4096 Jan 6 17:11 archive drwxrwx--- 2 mailman nogroup 4096 Jan 6 20:54 bad drwxrwx--- 2 mailman nogroup 4096 Jan 6 17:11 bounces drwxrwx--- 2 mailman nogroup 4096 Jan 6 17:11 command drwxrwx--- 2 mailman nogroup 4096 Jan 6 17:11 digest drwxrwx--- 2 mailman nogroup 4096 Jan 6 17:11 in drwxrwx--- 2 mailman nogroup 4096 Jan 6 17:11 nntp drwxrwx--- 2 mailman nogroup 4096 Jan 6 17:11 out drwxrwx--- 2 mailman nogroup 4096 Jan 6 17:11 pipeline drwxrwx--- 2 mailman nogroup 4096 Jan 6 17:11 retry drwxrwx--- 2 mailman nogroup 4096 Jan 6 17:11 shunt drwxrwx--- 2 mailman nogroup 4096 Jan 6 20:54 virgin mailman-core:/opt/mailman/var/queue/virgin# ls -l total 0 Do you have any idea what I'm doing wrong? Thank you

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How to remove Held Unsubscriptions
by Mark Jan. 6, 2025

Jan. 6, 2025

Hi As a moderator I receive an email each day for "Held Unsubscriptions" for a subscriber that was unsubscribed by the Owner sometime ago (using "Mass operations"). +++++++++++++++++++++++++++++++ The listname(a)domain.com list has 1 moderation requests waiting. Held Unsubscriptions: User: bart(a)example.com Please attend to this at your earliest convenience. +++++++++++++++++++++++++++++++ There is nothing showing under "Subscription requests > Pending approval". Could anyone tell me how I can stop these email notifications? I have access to the mailman shell and the databases. Thanks, Mark

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possible backscatter attack using Mailman3 servers
by David Newman Jan. 5, 2025

Jan. 5, 2025

Greetings. On a system running Mailman 3.3.9 and Postfix, I'm seeing about 20-30 entries per day in the Postfix queue where it appears a Gmail user signs up for a mailing list that requires confirmation, and Gmail responds that the user is too busy to handle requests. There are no publicly advertised email lists on this server, and I don't ever see anything in the Mailman logs indicating the user ever tried signing up. I've pasted the mail.log transaction below, with only slight obfuscation: - "mail10.example1.com" is this server's canonical hostname - lists are hosted on "lists.example2.com" and "mail.example3.com" - "someuser9413(a)gmail.com" is the user supposedly signing up Thanks in advance for clues on determining where these requests are coming from, and how I might block them. I have a strong interest in having my server not amplifying backscatter traffic like this. Alternatively, if this is a Postfix problem, please let me know that too. dn Jan 3 10:29:22 mail10 postfix/postscreen[4052406]: CONNECT from [::1]:55274 to [::1]:25 Jan 3 10:29:22 mail10 postfix/postscreen[4052406]: WHITELISTED [::1]:55274 Jan 3 10:29:22 mail10 postfix/postscreen[4052406]: using backwards-compatible default setting respectful_logging=no for client [::1]:55274 Jan 3 10:29:22 mail10 postfix/smtpd[4052407]: connect from localhost[::1] Jan 3 10:29:22 mail10 postfix/smtpd[4052407]: discarding EHLO keywords: CHUNKING Jan 3 10:29:22 mail10 postfix/smtpd[4052407]: 4YPsYG1X2xzHQfw: client=localhost[::1] Jan 3 10:29:22 mail10 postfix/cleanup[4052628]: 4YPsYG1X2xzHQfw: message-id=<173592896219.2314.15515568084960961396(a)mail10.example1.com> Jan 3 10:29:22 mail10 postfix/smtpd[4052407]: disconnect from localhost[::1] ehlo=1 mail=1 rcpt=1 data=1 quit=1 commands=5 Jan 3 10:29:22 mail10 postfix/qmgr[3635053]: 4YPsYG1X2xzHQfw: from=<postmaster(a)example2.com>, size=901, nrcpt=1 (queue active) Jan 3 10:29:22 mail10 postfix/10025/smtpd[4052639]: connect from localhost[127.0.0.1] Jan 3 10:29:22 mail10 postfix/10025/smtpd[4052639]: discarding EHLO keywords: CHUNKING Jan 3 10:29:22 mail10 postfix/10025/smtpd[4052639]: 4YPsYG33SkzHSdN: client=localhost[127.0.0.1] Jan 3 10:29:22 mail10 postfix/cleanup[4052628]: 4YPsYG33SkzHSdN: message-id=<173592896219.2314.15515568084960961396(a)mail10.example1.com> Jan 3 10:29:22 mail10 postfix/10025/smtpd[4052639]: disconnect from localhost[127.0.0.1] ehlo=1 mail=1 rcpt=1 data=1 quit=1 commands=5 Jan 3 10:29:22 mail10 postfix/qmgr[3635053]: 4YPsYG33SkzHSdN: from=<postmaster(a)example2.com>, size=1939, nrcpt=1 (queue active) Jan 3 10:29:22 mail10 amavis[4017234]: (4017234-09) Passed CLEAN {RelayedInternal}, MYNETS/MYUSERS LOCAL [::1]:55274 ESMTP/ESMTP <postmaster(a)example2.com> -> <someuser9413(a)gmail.com>, (), Queue-ID: 4YPsYG1X2xzHQfw, Message-ID: <173592896219.2314.15515568084960961396(a)mail10.example1.com>, mail_id: P9P7GnranpAW, b: Zp0DirpBL, Hits: -, size: 900, queued_as: 4YPsYG33SkzHSdN, Subject: "[mail.example3.com] Please Confirm Your Email Address", From: <postmaster(a)example2.com>, helo=mail10.example1.com, dkim_new=dkim:example1.com, 217 ms Jan 3 10:29:22 mail10 postfix/amavis/smtp[4052633]: 4YPsYG1X2xzHQfw: to=<someuser9413(a)gmail.com>, relay=127.0.0.1[127.0.0.1]:10024, delay=0.24, delays=0.02/0/0.01/0.21, dsn=2.0.0, status=sent (250 2.0.0 from MTA(smtp:[127.0.0.1]:10025): 250 2.0.0 Ok: queued as 4YPsYG33SkzHSdN) Jan 3 10:29:22 mail10 postfix/qmgr[3635053]: 4YPsYG1X2xzHQfw: removed Jan 3 10:29:22 mail10 postfix/smtp[4052642]: Trusted TLS connection established to gmail-smtp-in.l.google.com[2607:f8b0:4023:c0d::1b]:25: TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256 Jan 3 10:29:22 mail10 postfix/smtp[4052642]: 4YPsYG33SkzHSdN: host gmail-smtp-in.l.google.com[2607:f8b0:4023:c0d::1b] 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 98e67ed59e1d1-2f2ed632fdfsi39876934a91.55 - gsmtp (in reply to RCPT TO command) Jan 3 10:29:22 mail10 postfix/smtp[4052642]: Trusted TLS connection established to gmail-smtp-in.l.google.com[142.251.2.27]:25: TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256 Jan 3 10:29:22 mail10 postfix/smtp[4052642]: 4YPsYG33SkzHSdN: to=<someuser9413(a)gmail.com>, relay=gmail-smtp-in.l.google.com[142.251.2.27]:25, delay=0.46, delays=0.01/0/0.4/0.04, dsn=4.2.1, status=deferred (host gmail-smtp-in.l.google.com[142.251.2.27] 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 d2e1a72fcca58-72aad8fd529si37008995b3a.196 - gsmtp (in reply to RCPT TO command))

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