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#1 2021-01-22 09:27:26

Registered: 2021-01-22
Posts: 2

mailman3 throws errors on start


I have installed mailman3 & am trying to get it going but i am facing an issue while starting the service: Logs messages are:

cat /var/log/mailman/mailman.log
Master started
command failure: /usr/sbin/postmap /var/lib/mailman/data/postfix_lmtp, 1, Operation not permitted
command failure: /usr/sbin/postmap /var/lib/mailman/data/postfix_domains, 1, Operation not permitted
Master watcher caught SIGTERM.  Exiting.
Master stopped

Just to test I gave all rw permission to the dir /var/lib/mailman/data/ but still it is throwing errors. Dir permissions are:
drwxrwxrwx 2 mailman root 4.0K Jan 22 12:22 /var/lib/mailman/data/

Also, I wanted to use command telnet but don't know which package to install.

Need your help.

Much Thanks.


#2 2021-01-22 12:07:25

Registered: 2021-01-11
Posts: 14

Re: mailman3 throws errors on start

Did you follow the installation procedure, configured correctly the postfix for Mailman and databases, such as described on
When configuring, keep an eye on the notes

Mailman runs as a dedicated mailman user, therefore any calls to the mailman executable have to be done as the mailman user.

What for did you wanted to use telnet?


#3 2021-02-12 12:32:44

Patrick Ben Koetter
Registered: 2016-10-26
Posts: 4

Re: mailman3 throws errors on start

I had that problem too and I think I've solved it by changing/removing the RestrictAddressFamilies option in mailman's unit file at /usr/lib/systemd/system/mailman3.service. The settings there seem to be overly aggressive.


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