It is expected that Exchange Server and Client Access Server (if required) have already been setup and operating.

You must have the DualShield Authentication Server and DualShield SSO Server installed and operating (both are installed by default in the installation of the platform). For the installation, configuration and administration of DualShield Authentication and SSO servers please refer to the following documents:

To implement two-factor authentication for Exchange ActiveSync, you will need to install the DualShield IIS Agent on the Client Access Server (CAS). If you do not deploy CAS then you will install the DualShield IIS Agent on the Exchange Server. For the general instruction of the installation and configuration of the DualShield IIS Agent, please refer to the following document: