[mailman3] lmtp error on receiving mails to list

[jskvbinmv]

Hello!

I followed the guide three times to the letter with a new uberspace every time and I have no problem getting everything up and running. I can log in and I get confirmation mails for the admin account (and successfully confirmed my account) and list subscriptions but when I try to send a mail to the list I get the following errors:

Hi. This is the qmail-send program at caelum.uberspace.de.
I'm afraid I wasn't able to deliver your message to the following addresses.
This is a permanent error; I've given up. Sorry it didn't work out.
 
<[email protected]>:
 
--- Below this line is a copy of the message.`

[...]

Also there is an error in ~/logs/smtp.log

[redacted@caelum logs]$ cat smtp.log

Mar 25 00:58:57 2024 (25450) Available AUTH mechanisms: LOGIN(builtin) PLAIN(builtin)
Mar 25 00:58:57 2024 (25450) Peer: ('127.0.0.1', 41444)
Mar 25 00:58:57 2024 (25450) ('127.0.0.1', 41444) handling connection
Mar 25 00:58:57 2024 (25450) ('127.0.0.1', 41444) EOF received
Mar 25 00:58:57 2024 (25450) ('127.0.0.1', 41444) Connection lost during _handle_client()
Mar 25 00:58:57 2024 (25450) ('127.0.0.1', 41444) connection lost
Mar 25 01:15:28 2024 (25452) <[email protected]> smtp to [email protected] for 1 recips, completed in 0.7402050495147705 seconds
Mar 25 01:15:28 2024 (25452) <[email protected]> post to [email protected] from [email protected], 1252 bytes
Mar 25 01:16:02 2024 (25450) Available AUTH mechanisms: LOGIN(builtin) PLAIN(builtin)
Mar 25 01:16:02 2024 (25450) Peer: ('100.65.43.1', 59974)
Mar 25 01:16:02 2024 (25450) ('100.65.43.1', 59974) handling connection
Mar 25 01:16:02 2024 (25450) ('100.65.43.1', 59974) >> b'lhlo caelum.uberspace.de'
Mar 25 01:16:02 2024 (25450) ('100.65.43.1', 59974) >> b'mail FROM:<[email protected]> size=1848'
Mar 25 01:16:02 2024 (25450) ('100.65.43.1', 59974) sender: [email protected]
Mar 25 01:16:02 2024 (25450) ('100.65.43.1', 59974) >> b'rcpt TO:<[email protected]>'
Mar 25 01:16:02 2024 (25450) ('100.65.43.1', 59974) recip: [email protected]
Mar 25 01:16:02 2024 (25450) ('100.65.43.1', 59974) >> b'data'
Mar 25 01:16:02 2024 (25450) ('100.65.43.1', 59974) >> b'rset'
Mar 25 01:16:02 2024 (25450) ('100.65.43.1', 59974) EOF received
Mar 25 01:16:02 2024 (25450) ('100.65.43.1', 59974) Connection lost during _handle_client()
Mar 25 01:16:02 2024 (25450) ('100.65.43.1', 59974) connection lost

Can anyone point me in the right direction?

[jskvbinmv]

Turns out this is the culprit:

https://gitlab.com/mailman/mailman/-/issues/1133

Changing qmail-lmtp as suggested there solves the problem for now. Although this seems to be a workaround at best.

I still see Connection lost during _handle_client() in the log. Don't know if this is a problem or not:

Mar 25 06:24:42 2024 (25100) Available AUTH mechanisms: LOGIN(builtin) PLAIN(builtin)
Mar 25 06:24:42 2024 (25100) Peer: ('100.65.43.1', 33768)
Mar 25 06:24:42 2024 (25100) ('100.65.43.1', 33768) handling connection
Mar 25 06:24:42 2024 (25100) ('100.65.43.1', 33768) >> b'lhlo caelum.uberspace.de'
Mar 25 06:24:42 2024 (25100) ('100.65.43.1', 33768) >> b'mail FROM:<[email protected]> size=1919'
Mar 25 06:24:42 2024 (25100) ('100.65.43.1', 33768) sender: [email protected]
Mar 25 06:24:42 2024 (25100) ('100.65.43.1', 33768) >> b'rcpt TO:<[email protected]>'
Mar 25 06:24:42 2024 (25100) ('100.65.43.1', 33768) recip: [email protected]
Mar 25 06:24:42 2024 (25100) ('100.65.43.1', 33768) >> b'data'
Mar 25 06:24:42 2024 (25100) ('100.65.43.1', 33768) EOF received
Mar 25 06:24:42 2024 (25100) ('100.65.43.1', 33768) Connection lost during _handle_client()
Mar 25 06:24:42 2024 (25100) ('100.65.43.1', 33768) connection lost
Mar 25 06:24:45 2024 (25102) <[email protected]> smtp to [email protected] for 1 recips, completed in 0.884413480758667 seconds
Mar 25 06:24:45 2024 (25102) <[email protected]> post to [email protected] from [email protected], 1919 bytes

[jskvbinmv]

Updated Guide #1769 solves this