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Technology Components for More Secure Client Access
Exchange 2003 is designed to interoperate with multiple clients.
In Figure 1, each client is shown accessing Exchange 2003 through the Internet and secured by a combination of firewalls and, in this particular case, Microsoft Internet Security and Acceleration Server (ISA Server) acting as a gateway with enhanced security for Exchange and other server infrastructure.
Outlook 2003, Outlook 2002, and Outlook 2000 can connect to Exchange 2003*. Outlook 2003 and Exchange 2003 are designed to perform over slow, latent, or poor network connections. Examples are dial-up lines and wireless data links such as 1xRTT and General Packet Radio Service (GPRS). New Outlook 2003 features include:
Exchange Cached Mode.
VPN-less connections that use the new remote procedure call (RPC) over HTTPS capability in Outlook 2003.
Outlook Web Access in Exchange 2003 has been improved for easier use, speed, and greater security. The popularity of Outlook Web Access is in part because the product is easy to support and use and no installation is necessary. Any browser-based computer can access Exchange with greater security, and, with the new UI, most users have to look twice to see if they are using Outlook 2003 or Outlook Web Access. The features include:
Task list support
HTML and attachment blocking (prevents spam and potential beacon-finding code)
Automatic logoff (Forgot to logoff? Don't worry-the inactivity time-out automatically logs off and closes out your session.)
You also get support for S/MIME in Outlook Web Access so that you can digitally sign and encrypt your e-mail messages.
* Earlier versions might work also, but are not fully tested.
Exchange Server ActiveSync
Microsoft Windows MobileT-based devices, such as the Pocket PC, come with the Microsoft ActiveSync® client and Pocket Outlook built in, which enables you to sync your e-mail messages, calendar, and contacts lists directly with Exchange 2003. Exchange administrators can enable this from the same screen used to manage Exchange e-mail accounts.
Outlook Mobile Access
Similar to Outlook Web Access for desktop browsers, Outlook Mobile Access is designed for security-enhanced access from mobile device browsers. With Exchange 2003, users can gain access to their mailboxes from mobile devices with HTML, XHTML (WAP 2.x), and CHTML-based microbrowsers.
Pervasive Productivity Scenarios
The flexible options for information access and the new ways to stay connected enable information workers to be more productive and in control when and how they communicate.
Mobile workers, such as sales and service staff using portable computers and running Outlook 2003 over a wireless network, are free to roam and communicate. No longer tethered to a cable, they can check their e-mail messages, look up their contacts and schedules, and continue to communicate with their customers, partners, and coworkers wherever and whenever they choose-in the car, at their customer's location, or even at the airport. Outlook 2003 is designed to work over slow and poor network connections: Mobile workers are shielded from network issues and can continue working with their Exchange information while Exchange and Outlook use the available network resources.
Remote workers can work at home, a remote office, a customer site, an 802.11 hot spot such as their local Internet café, and can start Outlook or use Outlook Web Access from any Internet-connected computer to gain security-enhanced access to Exchange. Outlook Web Access adds more freedom by enabling them to stay in touch through Exchange without their own portable computer. Outlook Web Access extends the latest features in Exchange 2003 to any browser-based computer, including non-Microsoft operating systems. And because Outlook Web Access doesn't need installation, your IT departments can reduce support costs.
Traveling executives can run Outlook 2003 from their hotel or between flight connections over a dial-up line and synchronize their e-mail messages. With the latest synchronized Exchange data, they can continue working offline until their next opportunity to dial in and reconnect. Outlook 2003 and Exchange 2003 help them to be productive online and offline.
Don't want to carry a portable computer? Pocket PC, Pocket PC Phone Edition, and Windows Mobile-based Smartphones enable you to synchronize your wireless device directly to Exchange. E-mail messages, contacts, schedules, and attachments are at your fingertips.