Ken Wright:
> What a way to start the new year!
>
> I got the following message in /var/log/mail.err this morning:
>
> Jan 1 01:34:03 grace postfix/postqueue[1684046]: fatal: Queue report
> unavailable - mail system is down
postqueue will log this when it is unable to connect to the "showq"
service socket.
- Does the socket /var/spool/postfix/public/showq exist? It
should look like this:
srw-rw-rw- 1 postfix postfix 0 Dec 17 18:13 /var/spool/postfix/public/showq
- Is the showq service defined in master.cf? It should look like this:
showq unix n - ... - - showq
Note that the third column must be 'n'.
- Is the postqueue command subject to AppArmor reduced privileges?
The postqueue command will log EACES (Permission denied) errors,
but when AppArmor returns a different error code such as EPERM,
postqueue will just say "mail system is down" (it does not try
to evaluate every possible error code).
I have updated Postfix 3.7 and added EPERM to the list of expected
permission errors.
- Is there more than one Postfix configuration on the machine? In
that case the postqueue command may have been looking at a different
Postfix configuration than the one that you were looking at.
Wietse
> Naturally, I checked, and both Postfix and Dovecot are running. Can
> anyone translate this for me?
>
> System details: Ubuntu Server 20.04.3, Postfix 3.4.13, Dovecot
> 2.3.7.2. Further details available on request.
>
> Ken
>
>
