Deployment and Installation Center
Websense TRITON Enterprise v7.6.x

With Data Security, you can perform discovery on Microsoft Exchange servers. Before you begin, there are a number of steps you need to take.
The service account should now be able to accesse Exchange via Outlook Web App (OWA) and move between the mailboxes intended to be scanned during the discovery. Try switching between mailboxes as shown below:
Run the New-ManagementRoleAssignment cmdlet to add the permission to impersonate to the specified user.
New-ManagementRoleAssignment -Name:impersonationAssignmentName -Role:ApplicationImpersonation -User:ServiceAccount
Select Main > Policy Management > Discovery Policies > Add Network Task > Exchange Task.