On Dec 18, 2009, at 8:41 AM, Daniel Campos wrote: > We're planning to deploy a large e-mail system storing maildirs in a NAS > system through NFS. One of the options we're thinking on is using > Dovecot+EXIM. > > As far as I've read in both project's documentation, both services implement > locking allowing multiple servers to access the same maildirs in order to > distribute the service load.
Mail deliveries don't require any locks with maildir. But for Dovecot, be sure to read http://wiki.dovecot.org/NFS