On May 5, 2009, at 9:41 AM, Kenneth Kalmer wrote:
As for the system layout, it looks like this:* NFS server which is the same server that houses single Courier-IMAP installation (Gentoo, 3GB memory) * 2x Postfix instances delivering to NFS
NFS may be problematic. Dovecot expects a perfectly working NFS setup, which seems to be a bit rare to find. http://wiki.dovecot.org/NFS
So I'd do some testing before moving all the users.