[Dovecot] change inbox dotlock name

Hi,

Is there a configuration element that would allow me to change the dot-lock name for the user's /var/mail inbox when it is locked? dovecot (correctly) acquires <username>.lock, but I'm having a problem with procmail where some obscure code path is preventing procmail's acquisition of a lock when it's that default name in /var/mail.

The issue is not permissions (using a world-writeable and sticky-bit config for /var/mail).

I'll dig into the procmail code if needed, but if dovecot could use a different filename for such locks, then that would solve my issue.
procmail has such an option, and I only need to do this for inboxes.

Thanks, Chris

-- Chris Saldanha Parliant Corporation