http://blogs.technet.com/b/greg_katz_-_messaging_in_education/archive/2008/05/12/cached-mode.aspxCached Exchange Mode was introduced with Outlook 2003. When an Outlook account is configured to use Cached Exchange Mode, Outlook works from a local copy of a user's Exchange mailbox stored in an Offline Folder file (OST file) on the user's computer,en-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)http://blogs.technet.com/b/greg_katz_-_messaging_in_education/archive/2008/05/12/cached-mode.aspx#3185376Sun, 18 Jan 2009 20:30:22 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3185376Exchange Cached Mode | keyongtech<p>PingBack from <a rel="nofollow" target="_new" href="http://www.keyongtech.com/1209801-exchange-cached-mode">http://www.keyongtech.com/1209801-exchange-cached-mode</a></p> <img src="http://blogs.technet.com/aggbug.aspx?PostID=3185376" width="1" height="1">