[Dovecot] Clustering dovecot?

[dovecot at corwyn.net]

At 06:39 PM 5/27/2009, Timo Sirainen wrote:
>If you don't necessarily need load-balancing to multiple servers, it
>should be faster and more reliable to use active/passive and some
>(automated) failover between them. If you use active/active servers, you
>either need some clustered filesystem (not that efficient) or NFS (kind
>of sucks too).

Is active/passive a dovecot configuration option?

Rick