The Mimecast Web Security feature guards against malicious activity initiated by user action or by malware at the server level, or frontline layer of the web. It works by blocking access to business inappropriate websites, based on configured policies and features.
This guide outlines how to configure your gateway to use the Mimecast servers, per your vendor instructions.
Configuring Your Gateway
To enable Mimecast Web Security, you will need to know the IP address of your Mimecast server as displayed in the administration console.