[Dovecot] NFS mail storage

[Timo Sirainen]

On Wed, 2011-06-29 at 11:10 -0700, Daniel L. Miller wrote:
> The parameters listed for nfs installations (mmap_disable, 
> doctlock_use_excl, mail_nfs_storage, mail_nfs_index) - are they 
> necessary for data integrity, and/or do they compensate for NFS latency 
> and improve performance?
> 
> My understanding is the indexes are a critical part of a dbox storage, 
> but on the other hand having local indexes is a major performance 
> consideration.  Is maildir a "better" choice under NFS than dbox?

If you have only a single Dovecot server, you don't really need to worry
about anything. If you have more, use Dovecot director (with LMTP) and
again you don't have to worry about anything. Any other configuration
will have random errors regardless of what settings you use.