Enabling Microsoft Exchange allows you to leverage Exchange and Exchange Online features, to include Microsoft Exchange policies, integrated mailbox, and mail-enabled object management. You can enable or disable Microsoft Exchange support on each Administration server for Microsoft Exchange Server 2013 and later versions.
To enable Exchange, you need the required privileges, such as those included in the built-in Manage Policies and Automation Triggers role, and your license must support the Exchange product. For more information about Microsoft Exchange requirements, see Supported Platforms.
To enable support for Microsoft Exchange and Exchange Online:
Navigate to Policy and Automation Management > Configure Exchange Policies in the Delegation and Configuration console.
Select Enable Exchange Policy, and click Apply.