Upgrade from 1.2 to 2.2

[Gandalf Corvotempesta]

2017-02-15 13:27 GMT+01:00 Aki Tuomi <aki.tuomi at dovecot.fi>:
> For good pointers, see http://wiki.dovecot.org/Upgrading
>
> it's not complete, but it should give you some idea.

I've already read that, and as wrote previously, everything broke down.
dovecont -n wasn't able to convert the configuration file and dovecot
wasn't started properly.
The only way to fix was to downgrade.

As this is a production server, I would like to avoid this kind of issue.....