iPhone in Enterprise

iPhone and Microsoft Exchange Server
iPhone 2.0 software communicates directly with your Microsoft Exchange Server via Microsoft Exchange ActiveSync, giving users push email, contacts, and calendar. Exchange ActiveSync maintains a connection between Exchange Server and iPhone so when a new email message or meeting invitation arrives, iPhone is instantly updated. If your company currently supports Exchange ActiveSync on Exchange Server 2003 or 2007, you already have the necessary services in place to support iPhone 2.0 software—no additional configuration is required. If you have Exchange Server but your company is new to Exchange ActiveSync, review the following steps to enable
Exchange ActiveSync.


Exchange ActiveSync Setup
Network configuration
• Check to ensure port 443 is open on the firewall. (Note: If your company allows Outlook Web Access, port 443 is most likely already open on your firewall.)
• On the Front-End Server, verify that a server certificate is installed and enable SSL for the Exchange ActiveSync virtual directory (require basic SSL authentication).
• On the Microsoft Internet Security and Acceleration (ISA) Server, verify that a server certificate is installed and update the public DNS to properly resolve incoming connections.
• On the ISA Server, create a Web listener as well as an Exchange Web client access publishing rule according to Microsoft documentation. This is a necessary step in enabling Exchange ActiveSync.
• For all firewalls and network appliances, set the Idle Session Timeout to 30 minutes (check your Microsoft Exchange documentation for alternative heartbeat and timeout intervals).

Source : apple.com

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