Symantec Email Security.cloud customer with Policy Based Encryption add-on service has erroneously configured an admin notification to be sent along with the corresponding Data Protection policy that is triggered.
By erroneous, it means that the one or more policies are set to notify the configured administrator for that Data Protection policy, but the policy is defined to use an administrator address that is intended for re-direction to our encryption partners Echoworx or Zix. When this happens, the system is receiving the notification as a message to be processed. As this is not a message that should be processed for encryption, the system is dropping these messages to avoid triggering message loops.
No error or NDR (Non-Delivery Report) is generated, invalid admin notification messages are silently dropped.
To disable erroneous Admin notification on data protection policy
Note: If the Notify Administrator(s) check box is grayed out select Use custom notification which should then allow you to uncheck Notify administrator(s).