Buster/Dovecot stats-writer

I noticed another issue on an upgraded test server...

postfix/pipe[9881]: 18F1A402DF: to=<drdev@example.com>, relay=dovecot, delay=0.05, delays=0/0.01/0/0.03, dsn=2.0.0, status=sent (delivered via dovecot service (lda(drdev@example.com,)Error: net_connect_unix(/var/run/dovecot/stats-writer) failed: Permission de))

By default the stats-writer socket is owned by root.dovecot ... while the delivery is running as the vmail user.

The solution from https://forum.iredmail.org/post67035.html#p67035 seems to work. It adds to dovecot.conf:

service stats {
    unix_listener stats-reader {
        user = vmail
        group = vmail
        mode = 0660
    }

    unix_listener stats-writer {
        user = vmail
        group = vmail
        mode = 0660
    }
}

added Bug label

And a related Debian bug

Same bug on a fresh installed Debian Buster and the solution worked also for me.

I'd prefer adding the vmail user to the dovecot group. Have you tested if that works, too, instead of the above? usermod -G dovecot vmail

I just reverted the service stats lines and restarted the services... somehow now it's not generating this error. I'll see if I can reproduce it again.

I found the way to reproduce again in:

su - vmail 
doveadm mailbox create -s -u drdev@example.com 'Testfolder'

The usermod -G dovecot vmail command also solves it, either solution would be OK for me.

I commented the fixing conf values, typped the usermod -G dovecot vmail, restarted dovecot and postfix; I still have this error. Maybe I missed something?

added git-stable label

mentioned in commit 3cabaa68

added Fixed label

changed milestone to %3.1.15

closed