[Dovecot] locking strategies?

[Joe Allesi -X (joallesi - Coyote Creek Consulting at Cisco)]

Any known issues with these locking strategies? (RHEL 4.x default)

Dovecot:
mbox_locks = fcntl

Procmail
Locking strategies:     dotlocking, fcntl()

We're considering moving to all dotlocking after a recommendation from
RedHat, even though we're not using NFS at all.

Thanks!