The last time I checked, dovecot didn't support having nested IMAP folders be implemented via actual nested maildir folders in the filesystem, but that feature was on the "someday maybe it'll happen list", IIRC. I can't find any recent mention of that feature or its absence on the web or in the list archives; is it still on the someday list?
(If it isn't implemented yet, does anyone know of an IMAP server that DOES support it?)
Thanks,
Sweth.
-- Sweth Chandramouli sweth@ethicalhomes.com - http://EthicalHomes.com/ Thinking about buying a home, but feel like the local real estate market has left you behind? Know others who have the same questions? I teach at homebuying seminars for local housing agencies, and would be glad to help set up a free seminar for your company or organization.