On Fri, 2007-12-21 at 15:52 -0800, Simon Gao wrote:

I have issue with one user mailbox in /var/spool/mail. I have to restore older version of the same mailbox file over the newer one. What's the best way to do this?

You could just put it there. Dovecot just logs a couple of errors about UIDs and gives some messages new UIDs.