The body and any associated attachments are downloaded only when requested by you, or as necessary for synchronization with personal digital assistants (PDAs), auto archiving, and some client-side rules.In a slower connection environment, the Offline Address Book is also not automatically updated.However, you do have the option of manually requesting the update.
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).
Any changes you make while a connection to the server isn't available are synchronized automatically when a connection is available.
You can continue to work while changes are synchronized.
Top of Page When data is optimized for an Exchange connection type, the type of items that are synchronized with your server mailbox are different.
For example, when you use a fast connection, Office Outlook 2007 copies the header, body, and attachments of an e-mail item from the e-mail server to your computer.
When a slower connection is selected, only headers are automatically downloaded.
This feature requires you to use a Microsoft Exchange Server 2000, Exchange Server 2003, or Exchange Server 2007 account.
Most home and personal accounts do not use Microsoft Exchange.
For more information about Microsoft Exchange accounts and how to determine which version of Exchange your account connects to, see the links in the See Also section.
Cached Exchange Mode provides you with a better experience when you use a Microsoft Exchange account. This copy provides quick access to your data and is frequently updated with the mail server.