Hi Mark, >That's a misleading message. It's been improved by >https://gitlab.com/mailman/mailman/-/merge_requests/1362, however usually the >underlying issue is inability to access a header or footer template when >decorating the message. This in turn is most likely >caused by some >template(s) in Mailman's var/templates/ directory being owned by `root` or >some other non-mailman user and not readable by the Mailman user which in turn >most likely results from running `mailman import21` as root.
You are my hero! After "patching" the outgoing.py file with the error messages I got Aug 06 09:52:51 2025 (443278) Cannot connect to SMTP server 127.0.0.1 on port 25: HTTPSConnectionPool(host='lists.example.com', port=443): Max retries exceeded with url: /postorius/api/templates/list/hpc-admintreffen-info.lists.example.com/list:member:regular:footer (Caused by SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1006)'))) And was shocked. Why is there an SSL Certificate Error? Why can't python requests verify the certificate? So I googled a bit and found, that we can fix this be editing the cacert.pem of certifi. I did, but the error was still there. So I checked my https VHost (Apache btw) and there was a wrong chain in it. Oof. An error, that a browser does not see, but any ssl client. I fixed it and boom - everything works again. Thank you again and thank you Stephen for trying to resolve the problem 😊 -- Stephan Krinetzki IT Center Gruppe: Anwendungsbetrieb und Cloud Abteilung: Systeme und Betrieb RWTH Aachen University Seffenter Weg 23 52074 Aachen Tel: +49 241 80-24866 Fax: +49 241 80-22134 krinet...@itc.rwth-aachen.de www.itc.rwth-aachen.de Social Media Kanäle des IT Centers: https://blog.rwth-aachen.de/itc/ https://www.facebook.com/itcenterrwth https://www.linkedin.com/company/itcenterrwth https://twitter.com/ITCenterRWTH https://www.youtube.com/channel/UCKKDJJukeRwO0LP-ac8x8rQ​ -----Original Message----- From: Mark Sapiro <m...@msapiro.net> Sent: Tuesday, August 5, 2025 6:19 PM To: mailman-users@mailman3.org Subject: [MM3-users] Re: Held messages not delivered after approval On 8/5/25 02:06, Krinetzki, Stephan wrote: > Aug 05 10:21:05 2025 (217986) Cannot connect to SMTP server localhost > on port 25 > > The last error is a very often in the mailman.log: That's a misleading message. It's been improved by https://gitlab.com/mailman/mailman/-/merge_requests/1362, however usually the underlying issue is inability to access a header or footer template when decorating the message. This in turn is most likely caused by some template(s) in Mailman's var/templates/ directory being owned by `root` or some other non-mailman user and not readable by the Mailman user which in turn most likely results from running `mailman import21` as root. Bottom line - check that all sub-directories and files in Mailman's var/templates/ directory are searchable and readable by the Mailman user. -- Mark Sapiro <m...@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan _______________________________________________ Mailman-users mailing list -- mailman-users@mailman3.org To unsubscribe send an email to mailman-users-le...@mailman3.org https://lists.mailman3.org/mailman3/lists/mailman-users.mailman3.org/ Archived at: https://lists.mailman3.org/archives/list/mailman-users@mailman3.org/message/HPKY54EBOYBFIZRR4LLLSGNFI2UAMQGB/ This message sent to krinet...@itc.rwth-aachen.de
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