I've followed the setp-by-step giude to the letter (a lot of times now) and i still can't figure out why i get the message "unable to open this mailbox". I've tested both postfix and Courier-imap by logging into them by telnet. Someone told me it might be something with the courier-imap startup line, but i found nothing that could be out of order.

Any help would be greatly apreciated!