on the UCS a “Master User” is already configured for the mail server dovecot (see file
I can login with the Master User:
However, when accessing an Imap folder (e.g. INBOX) an error message is displayed that the folder does not exist!
dovecot: imap(<account>): Error: Opening INBOX failed: Mailbox doesn't exist: INBOX
What do I have to configure so that I can access IMAP folders of all users with the Master User?