Symantec Endpoint Protection Mobile's Exchange integration fulfills two different purposes.
The first is ease of deployment. By integrating with Exchange, SEP Mobile can be automatically deployed in the organization without the need to define users in the SEP Mobile system. Email account details are imported directly from Exchange, and users are created, triggering the deployment process.
The second is policy enforcement. Information about the security state of a device can be leveraged in order to enforce a policy across the organization, such as “Devices that connect to forbidden networks lose email access”. This acts as a mobile Data Leak Prevention solution and automatically protects sensitive information from leaking.