pmatz said:
My default mail delivery location is my exhange folder, which has all
special folders as expected, and where my mail comes into the inbox.
Not sure how the .pst took them. Perhaps I set it as a defualt mail
delivery location by accident at some point and that created these
folders.
If at any time a PST is made the delivery location, Outlook will precreate
the default folders and make them undeletable. Even if later the delivery
location is no longer the PST, you will not be able to delete them. A new
PST will not get those folders until its made the delivery location or until
you create them manually. I believe they're deletable if you create them
manually.
To get rid of them requires creating a new PST and moving all the folders
except for the ones you don't want to the new PST and then closing the old
PST.