[Dovecot] Dovecot mysql replication

[Edwardo Garcia]

Halo,

(First time posting, please forgive English is not native)

Change from Courier to Dovecot 2.1.16

Having two server.

Having mysql on thiz two server, one master, one slave.

What we wish is slave Dovecot only ask slave mysql, unless slave mysql not
work when then ask master, we have Postfix do thiz fallover good, but
Dovecot talk to slave and master no mater what, we think thiz defeat
fallover as we not want this aktion, but aktion like Postfix.

The problemo is can not find Dovecot option for thiz in wiki2.dovecot.org,
is possible?