User Guide

10 Preface iPhone in the Enterprise
Microsoft Exchange Autodiscovery
The Autodiscover service of Exchange Server 2007 is supported. When you’re
manually configuring an iPhone or iPod touch, Autodiscover uses your email
address and password to automatically determine the correct Exchange server
information. For information about enabling the Autodiscover service,
see http://technet.microsoft.com/en-us/library/cc539114.aspx.
Microsoft Exchange Global Address List
iPhone and iPod touch retrieve contact information from your company’s Exchange
server corporate directory. You can access the directory when searching in Contacts,
and it’s automatically accessed for completing email addresses as you enter them.
Additional Supported Exchange ActiveSync Features
In addition to the features and capabilities already described, iPhone supports:
 Creating calendar invitations. With Microsoft Exchange 2007, you can also view the
status of replies to your invitations.
 Setting Free, Busy, Tentative, or Out of Office status for your calendar events.
 Searching mail messages on the server. Requires Microsoft Exchange 2007.
 Exchange ActiveSync client certificate-based authentication.
Unsupported Exchange ActiveSync Features
Not all Exchange features are supported, including, for example:
 Folder management
 Opening links in email to documents stored on SharePoint servers
 Task synchronization
 Setting an “out of office” autoreply message
 Flagging messages for follow-up
VPN
iPhone and iPod touch work with VPN servers that support the following protocols and
authentication methods:
 L2TP/IPSec with user authentication by MS-CHAPV2 Password, RSA SecurID and
CryptoCard, and machine authentication by shared secret.
 PPTP with user authentication by MS-CHAPV2 Password, RSA SecurID, and
CryptoCard.
 Cisco IPSec with user authentication by Password, RSA SecurID, or CryptoCard,
and machine authentication by shared secret and certificates. See Appendix A for
compatible Cisco VPN servers and recommendations about configurations.
Cisco IPSec with certificate-based authentication supports VPN on demand for domains
you specify during configuration. See “VPN Settings” on page 36 for details.