mouss wrote:
Can Dovecot handle mbox for some users and maildir for others? I'd like to try a conversion for one user... I'll probably create a new user, then have procmail copy (via ! action code) all mail for one user to that new user.
Why not use one of the available mbox 2 maildir utilities.
in case you would have problems with this for whatever reason, another option is to simply start copying mail-folders inside a mail-client which connects to both old and new imap-server (or old mailboxes vs. new imap-server)
with that option you can even easily convert from mailboxes with "weird" formats like native pegasus mail mailboxes to maildir-format, assuming that you have set maildir-format as default on your new imap-server
just connect to your new imap-server with maildir as default inside your email-client and start copying etc.