Step 1: Install Microsoft Exchange Server 2010 with Client Access Server Role
Microsoft Exchange Server 2010 has five server roles that you can implement and configure on a server running Microsoft Windows Server 2008. The Client Access Server role is required for all active directory sites that contain a mailbox server—it provides access to the following applications and services:
Microsoft Outlook Web Access
Post Office Protocol version 3 (POP3)
Internet Messaging Application Protocol version 4 (IMAP4)
Exchange Control Panel
Exchange ActiveSync is enabled when the Client Access Server role is installed.
The Client Access Server role is added by default during a typical Exchange installation. It may also be installed on a separate server by selecting a custom option. The decision to deploy Exchange Server 2010 on a single server or in distributed-role architecture depends on the messaging needs and requirements of your organization.
The Client Access Server role should never be installed in the perimeter network unless you are deploying Exchange in a Microsoft Small Business Server deployment. In that configuration, Microsoft recommends that you use a firewall to funnel all Internet traffic that is bound for your Client Access Server. It is also a best practice to run Exchange Best Practice Analyzer before proceeding with your deployment.
You can download the Microsoft Exchange Best Practices Analyzer in the Microsoft Download Center.
To deploy Microsoft Exchange Server 2010, see the following technical documentation:
The topics presented in these articles include planning and architecture for simple, standard, large, and complex Exchange deployments. The topologies in Network Architecture Alternatives enable both a typical (single-server) and a custom (multiple-server) installation.
This document describes procedures and guidelines for deploying Windows Mobile 6.5 with Exchange Server 2010. Exchange Server 2010 roles other than the Client Access Server or Mailbox Server roles are not core components of a mobile messaging system, and are not documented here.
Make sure to visit the Exchange team blog. You can subscribe to get RSS updates. Approximately 3-5 articles are created every week in order to help you use Microsoft Exchange Server.