[Dovecot] mixing 1.2 and 2.0?

[Timo Sirainen]

On Sun, 2010-08-29 at 17:07 +0200, Cor Bosman wrote:
> Hi all, anyone know if it's safe to mix a 1.2 environment with 2.0
> servers? Im planning on adding some 2.0 servers for test purposes, but
> now im wondering if thats going to mess up index files or other files
> for users selecting the test server and then switching back to our
> normal servers.

As long as you're not using dsync to do mirroring you should be fine
(two-way mirroring requires dovecot.mailbox.log that contains changes
such as mailbox deletions etc.)