Is there a straightforward way to disallow the deletion of all IMAP mailboxes?
I have a user who's deleted an important IMAP mailbox and I'm now recovering a recent copy from the backup. But I'd rather just blanket disallow all folder deletions.
The user is using Thunderbird and this has happened more than once so I suspect Tbird is willing to let a folder get deleted too easily. Perhaps there was a delay in the confirmation dialog and the user clicked ahead and confirmed something he shouldn't have.
I'm looking at http://wiki.dovecot.org/ACL and it looks like I should be able to use a group override to disallow "x" (mailbox delete) but the page says that groups aren't implemented, so I don't know how one says that nobody can do this for any mailbox.
I'm using 1.2.rc15 from CentOS 5 (RHEL5 equivalent).