Cannot View Folders in Express After moving the BOX directory on the Mailserver, Express users report that they cannot see their folders To fix this problem delete the fldsum.imp file for the affected account. This is located at $\BOX\(username)\fldsum.imp.
This triggers the IMAP server that it needs to re-list the folders. The next time the user logs back into Express, their folder list will be rebuilt.
If this is affecting all users, then use the Windows search facility to delete all instances of fldsump.imp under the BOX directory.