Go to: Enforce > Servers and Detectors > Overview
Detection Server is showing an "Unknown" status.
This occurs because the Detection Server is unable to communicate with the Enforce Server. There are many different reasons your server may not be able to communicate. The information in this guide will help you identify which issue you may be running into.
Once you have identified a specific error message check to see if the solution for your issue can be found in the following KB article: DLP Detection servers show "Unknown" status (broadcom.com). That should resolve most "Unknown" Detection Server errors.
If you are unable to identify the error or are unable to find the solution in the linked KB article open up a case via the Broadcom support portal and zip up ALL (Operational, Debug & Trace, and Configuration) of the log files for the last 7 days from your Detection Server for Symantec Technical Support to review.