IP-Restricted Control Panel Login

We have implemented a new feature that allows companies to indicate specifically where their email administrators can log in to the administrative control panel. For example, a company can require that certain administrators only access the control panel from the office.
To set up this feature:
1. Log in to the control panel.
2. Select Administrators.
3. Click once on the administrator for whom you want to adjust permissions.
4. In the Security Settings section, check the “Login restricted to IP Address(es)