How is the "On/Off Policy" defined in Mimecast?

The "On/Off Policy" in Mimecast is defined as a policy that can either apply to or bypass email traffic flow. This means that the policy provides flexibility in determining whether specific email traffic should be subject to the rules and conditions set forth in the policy. By toggling this function, administrators can manage traffic effectively based on evolving organizational needs or specific scenarios without permanently altering the policy’s settings.

This capability is particularly useful when organizations face dynamic situations that require immediate action, such as responding to threats or adjusting email flow based on compliance requirements. The option to bypass a policy allows for tighter control over email routing, ensuring that critical messages can always be delivered while still maintaining overall security measures.

The other options do not capture the full functionality of the "On/Off Policy." For instance, a policy that applies to all internal emails would not encompass external communications or allow for dynamic adjustments. Similarly, a policy operating solely on outgoing emails would not provide the comprehensive control over traffic flow that the "On/Off Policy" offers. Lastly, a policy meant for restricting access to external senders does not align with the traffic flow management concept central to the "On/Off Policy."