[Dovecot] Migrating mail between servers

I've currently got dovecot running on a Fedora server and I want to move all my mail to my new server running ubuntu. Both use mbox and I have IMAP working in both. Can I just copy the ~user/mail directory and /var/mail/user file and replace them in the new server?

Thanks,

--

Knute Johnson

"The urge to save humanity is almost always a false front for the urge to rule."

H.L. Mencken