using Cyrus was Re: [CentOS] Re: Planning Mail Server (with low resources)

Ralph Angenendt wrote:
> Feizhou wrote:
> 
>>I gather then that to cluster cyrus, you need to not only share the 
>>actual mailboxes but also /var/imap?
> 
> 
> No.
> 
> <http://asg.web.cmu.edu/cyrus/ag.html> is a very interesting read on
> clustering cyrus servers.
> 

This solution does not appear to support HA. If one backend server goes 
down, all its mailboxes go with it.

a courier-imap/dovecot box would only just have to access a SAN and that 
is all there is to clustering. Multiple courier-imap/dovecot boxes 
hitting a database for user info and mailbox location and then hitting 
the san for the files. simple.