perhaps many people are on holidays in summer, however seems in your orig post you used 2.0.19 version there were a lot of updates perhaps first update 2.1.17 or 2.2.5 then retry
True true... although from my point of view its hard not to be tempted to use rsync or something else that I know. But as I said to a previous respondent, I'm keen to get to know (and hopefully love) my new dovecot install !
I'm on an Ubuntu LTS release so the dovecot came from their release. I'd prefer to stay that way unless I really have to...especially if the only reason for doing so is to fix Dsync. 2.0.19 seems to otherwise working ok ! Maybe I'll have a look through the release notes on a rainy day !
also seems you have some permission problems
failed: Permission denied (euid=1002(its_scripts) egid=1002(its_scripts) missing +r perm: /var/run/dovecot/auth-userdb, dir owned by 0:0 mode=0755)
Hmmm... I think I tried that at some point, I think that was when the problem might have morphed into ...
dsync(its-virtmail): Error: user test@somewhere.example.com: Initialization failed: mail_location not set and autodetection failed: Mail storage autodetection failed with home=/srv/mail/example.com/test dsync(its-virtmail): Fatal: User init failed dsync-local(test@somewhere.example.com): Error: read() from worker server failed: EOF
But I'll give it another go tomorrow.