[Dovecot] Running dovecot master processes across multiple IPs

[Timo Sirainen]

On Thu, 2009-09-24 at 17:41 -0500, Steven F Siirila wrote:
> We are running dovecot 1.1.8 and are currently running it with 4 master
> processes (one for each of the protocols: imap, imaps, pop3, pop3s).
> The idea was to spread out the load so as to not overwhelm any one master.

I hope v2.0 will also help with this in future. :) If not maybe it'll
still need some changing so that it can internally run multiple master
processes..

> This has worked well.  To take it further, we're contemplating running
> masters across multiple IP addresses, where the host/service name DNS
> records would be something like this:
> 
> imap-server.domain	A	10.1.1.1
> 			A	10.1.1.2
> 			A	10.1.1.3
> 			A	10.1.1.4
> 
> The default route would either be through the first address (10.1.1.1 in
> this example) or potentially across all of them in presumably a round-robin
> fashion.
> 
> Do you see any problems with this?  Has anyone done this?

I don't see any problems.
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