MIP classified Outlook invitations are not triggering the DLP policy

Products

• Data Loss Prevention Core Package
• Data Loss Prevention
• Data Loss Prevention Endpoint Prevent
• Data Loss Prevention Enforce

Issue/Introduction

When sending a calendar invite (with the Microsoft Sensitivity/AIP label) from the OUTLOOK client, the email rule for the MIP label is not triggering the prompt as expected.
It does trigger if an attachment (with AIP/MIP label) is included in the invite, but it does not if the label is only on the invite without an attachment.

 

Cause

Note that the COM plugin only supports label reading with emails and not invites.

 

Resolution

This is available as of 16.1 release.  Please upgrade to this release.  Read about this feature here.

 

Additional Information

Note there is a Product Advisory covering a whole host of other "not-supported things" in the new Outlook, many of which seem equally if not more concerning:

Open Issues in DLP 16.0.2 Support for Monitoring the New Outlook View on Windows Endpoints