Hello Götz,
Am 26.02.2014 08:50, schrieb Götz Reinicke - IT Koordinator:
after some off-ML discussions to and some reconsiderations, we might do the "big jump" from our current 1.2.17 to the atrpms 2.2.
From googling and reading the dovecot upgrade wiki I don't see any (big) pitfalls.
Basically we use the default config options, mbox, pop3s/imaps on RH EL 5.
So "just" run the upgrade-config script, fingers crossed and thats it?
Is it possible to do such a big step form 1.2 to 2.2?
You should at least have read these wiki articles:
http://wiki2.dovecot.org/Upgrading/2.0 http://wiki2.dovecot.org/Upgrading/2.1 http://wiki2.dovecot.org/Upgrading/2.2
According to http://wiki2.dovecot.org/Upgrading/2.2 Downgrading can be done fully safely to v2.1.16, not to versions before, because of attribute and cache file changes.
So it is probably better to do the upgrade step-by-step, from stable to stable version, or have a good backup.
Regards Daniel