Disable Folder Deletion

Hi Guys,

I have Outlook 2003 rolled out across 10 desktops. All 10 desktops have
access to the 'Company' Mailbox, some have this as their primary mailbox and
others as their secondary with a personal primary mailbox. Within the
mailbox we have several folders which are populated by a rule that runs on a
PC. My problem is that someone/something is deleting the folders within the
mailbox. This then obviously breaks the rule until I re-create the folder.
Users are adamant that they are not doing this although I have my
reservations..... Is there any solution to enable all of my users to delete
the contents of the folders and move messages but not actually delete the
folders themselves?

If not, is there anyway I can audit the object access/deletion of a folder
to show exactly what is being deleted and by who?

Any help would be massively appreciated!