Awhile back before http://www.howtoforge.com/perfect_setup_centos_4.3 was available I sucessfully installed ISPconfig on a centos 4.2 server using the howto for fedora core 4 . As at the time I was unsure how to properly setup dovecot, but now would like to figure out a way to migrate my exisiting imap mbox accounts to dovecot Maildir Now i've found a number of perl scripts which aid in the migration from mbox to Maildir type setups, but I'm unable to test any such transition on a development machine, and am concerned about jumping the gun and trying this in a production environment. Does anyone have experience doing this whome might be able to give me some pointers? If worst comes to worst as a wise man once said... "If it ain't broke, don't fix it" I may take their advice.
You can do it with mb2md: http://www.howtoforge.com/forums/showthread.php?t=835&highlight=mb2md To go sure, you should check on a test machine before.