Changing from mbox to maildir after installing ISPConfig
I've configured Debian 3.1 to Falko's 'perfect' spec with mbox style mail using popd for pop3 access. ISPConfig has been working great with no problems, I've even done two upgrades without a single issue (2.2.0 to 2.2.1 to 2.2.2 I think.). For some reason I wasn't thinking when I set the mail system up. What I really want is Courier with Maildirs. Currently there are no working mail accounts on the new server (I'm moving all my clients from an old server to ISPConfig setup); the only accounts I've created for each web is one for ftp access so I could transfer the websites. I've pretty much moved and configured everything except the mail.
My old setup is a running qmail with vpopmail which makes me more comfortable with maildirs. However, I've been wanting to switch to postfix for some time now.
Would this work (#1 and 2 taken from the howto):
apt-get install courier-imap courier-imap-ssl courier-pop courier-pop-ssl
postconf -e 'home_mailbox = Maildir/'
postconf -e 'mailbox_command ='
Change the the ispconfig setup under Management for maildirs.
Remove the user accounts I created for ftp access and re-adding them. (will this create ownership issues of the existing /var/www/... files I ftp'ed with the old accounts?)