Is there any place in particular to find out about the theory and operation
of lock files and the various mail processors used by Mandrake? Without
having done the builds myself, it's not entirely clear what's been shipped.
>From the source code, it appears that:
procmail is configured to use dot locking, and explicitly disallows use of
flock, lockf
mailx is configured to use flock, and there's code included to disable
use of dot locking
nmh is configured to use fcntl locking, and to disable use of dot locking
imap/pop3 is configured to use flock and dot locking
The only extended discussion of email file locking I've found is in the
imap/docs directory, in which Mark Crispin has a wonderful discussion of the
topic.
But as it stands, it appears that the "as shipped" configuration won't
play together....