To change whether shared folders or Public Folders are downloaded when Cached Exchange Mode is turned on, do the following: Cached Exchange Mode enables a better experience when you use an Exchange account.
When you are using Cached Exchange Mode, an email message may remain in the Outbox for up to one minute until the next synchronization with the server that runs Exchange occurs.
If you work offline, whether by choice or due to a connection problem, your data is still available to you instantly wherever you are.
If a connection from your computer to the server running Exchange isn't available, Microsoft Office Outlook 2007 switches to Trying to connect or Disconnected.
If the connection is restored, Microsoft Office Outlook 2007 automatically switches back to Connected or Connected (Headers).
For example, you may use a laptop computer at your office and connect via a network cable to your corporate local area network (LAN).
You have access to headers and full items, including attachments.
When a slower connection is selected, only headers are automatically downloaded.