> > 2) What, exactly, is gdbm/db used for? The INSTALL document says > > "for certain functions". I can tell that they are used by the userdb > > auth module and couriertcpd. Anything else? > > It's used to create a temporary database during folder synchronization.

What will the path/file names of these databases be? Does 'temporary' mean that they are created, used, and deleted in short succession so that they normaly will not be present? If they are created in the users maildir, what about NFS mounted maildirs (gdbm/db uses locking)? Sooner or later a imapd process will crash, leaving such a database behind (in a consistent or inconsistent state). Will this be a problem the next time that user logs in?

(The reason for all these questions is just that I want to know exactly what will be happening on my system if I put courier imap into production).