Quoting dovecot@corwyn.net:
At 01:17 PM 5/27/2009, Seth Mattinen wrote:
You're probably looking for Dovecot replication, which as far as I'm aware, has not made itself known in a functional form yet. I really want to see master/master replication.
I at least don't think I am - I think I'd rather run dovecot with
two front-end servers clustered to a backend SAN. If I"m running two
separate servers then all of my clients (which i can point to only 1
IP) I think woudl go down if "their" server went down.But what it sounds like you're saying is that there's no good way to
run dovecot so that if the single server it's on fails I can keep
service availability?
If you have 2 dovecot servers with your mailboxes stored on a SAN
(over NFS), you can front your 2 dovecot machines with a load balancer
like UltraMonkey (LHA/Heartbeat).
Rick