Run it interactively in a "screen" session, so you'll be able to see what it is doing and where it is stopping. As it is in screen you can go away and resume (screen -r) the session when you want. You can also forcibly detach the session from your current ssh session with "ctl-a" then "d".

Patrick; yeah, found that, but couldn’t see how to enable the logging. The option i tried (error) didn’t seem to add anything useful.
And Nick; can’t tell as there doesn’t appear to be anything in the logs, so at the moment I’m in the dark.

I only run Kopano on a Mickey Mouse server and it has always done it. I don't think it is an issue. I'd look elsewhere.

What is the problem with imapsync? Is it always failing at the same point?

Richard George wrote:

My kopano server log is showing the following errors ...

Wed Apr 21 11:07:40 2021: [error  ] Not all objects in relation found for object "username"

How can I find out which ojects are missing, and what needs changing/correcting to fix the issue?

I'm wondering if it's causing a recent problem with IMAP syncing not finishing ...?

I've these message for a long time in my log.
No clue what caused it or where they are comming from.

Also not an unknown issue with Kopano.
https://forum.kopano.io/topic/2162/not-all-objects-in-relation-found-for-object-username/4