[Dovecot] Usage of director without LMTP

[Timo Sirainen]

On Wed, 2011-11-16 at 15:02 +0100, Oliver Eales wrote:

> For the final setup we want to utilize the director for all protocols
> (IMAP,POP,LMTP,SIEVE).
> During the transition phase we will not be able to use LMTP for mail
> delivery, but we are still stuck with deliver as LDA.
> So for mail delivery we will not have the fixed user/server assignment,
> but rather a random assignment.
> 
> What NFS- and locking settings should be used on the backend servers in
> this case.
> And should i use different settings for the host the deliver is executed
> than the IMAP/POP3 hosts which are accessed through a director proxy.

All the LDA/IMAP/POP3 servers should use these settings to minimize
problems:

mail_nfs_storage = yes
mail_nfs_index = yes

Once you're using LMTP proxying also you can remove those. Otherwise the
settings are the same.