Relevant Versions: 8.0
The root of the folder tree will be "IPM_SUBTREE" or "Top of Information Store" depending on whether the checkbox for "Use Cached Exchange Mode" is checked or unchecked in your Outlook profile.
So, one of the two following settings should be set, depending on the cache setting.
StartFolder = IPM_SUBTREE\Inbox
StartFolder = Top of Information Store\Inbox
If you are having a problem with Discover Scanner not scanning the user's own inbox, check the folder setting in the config file to see which of the two above settings is listed. For example, If you have:
StartFolder = IPM_SUBTREE\Inbox
Change it to
StartFolder = Top of Information Store\Inbox