[Dovecot] NFS mail storage

[Daniel L. Miller]

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?
-- 
Daniel