Remember that the OST file is a cache of what's on the Exchange server mailbox. If the Exchange mailbox is set as the default delivery store and there are no rules to move items to .pst files, then all the mail from all POP3 accounts will be in the Exchange Inbox and thus in the OST file.

--
Sue Mosher, Outlook MVP
Author of Configuring Microsoft Outlook 2003
http://www.turtleflock.com/olconfig/index.htm
and Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers
http://www.outlookcode.com/jumpstart.aspx

"Robert Kufrin" wrote in message ...
In article ,
says...
An OST file is tied to a particular Exchange mailbox and Outlook mail profile. It is a local cache of the data on the server. You cannot use it to transport items between machines.

If, however, all three of your machines are set up to use Outlook 2003 in Cached Exchange mode, they will all contain the same data from the server in their OST files, and you will not need to move any data between machines.


Sue: I use all three of my computers interchangably. I
receive work based email which will be based on the
exchange server with personal mail which includes gmail and
hughes.net email. Will the exchange ost file receive and
allow access for all three types of email?