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Outlook Answer Book, The: Useful Tips, Tricks, and Hacks for Microsoft Outlook® 2003 by Brian Delahunty, Tom Archer

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Working Offline

13.17. Can I Use Outlook with Exchange Server When I Am Offline?

Most definitely, Exchange Server provides a rich set of tools for users who work offline. The typical example is a portable computer user who travels away from the office. Outlook 2003 provides a feature called Cached Exchange Mode that manages the offline use of Exchange Server resources.

13.18. What Is an OST?

When you use Outlook in an offline mode, Exchange Server and Outlook use a file called an OST to maintain a replica of your mail on your local hard disk. The file is very similar to a PST.

Outlook monitors your Exchange Server to see if a connection can be made. You will notice in the lower-right side of the status bar the words Connected or Disconnected ...

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