What is the mail client? I had the same problem with Thunderbird until I found the answer on this list a while back. It's not a Dovecot issue; it's the way Thunderbird handles deletions. mbox does not support folders containing messages+folders, so it was attempting to delete a folder by sending it to the "Trash" folder, which obviously won't work given the constraint above. The solution, at least with Tbird, is a removing a check from the box under Tools->Account Settings->{accountname}-Server Settings->Advanced: "Server supports folders that contain subfolders ansd messages". I don't know if other clients have this setting, but it fixed my problem with deleting folders.
RobertC
Matt Juszczak wrote:
Hi all,
We're using the mbox format and I tried setting up IMAP on my boss's computer tonight.
He likes subfolders, and although they work, he can't seem to remove subfolders once he created them, nor create new folders without using something other than his mail client (like mkdir from the command line).
Any ideas on this? Does dovecot just not officially support IMAP and subfolders with the mbox format? Or could it be a permissions issue?
-Matt