The client computer must be running Microsoft Windows XP Professional Service Pack 1 (SP1), and the update package that is described in the following Microsoft Knowledge Base article must be installed:
331320 Outlook 2003 performs slowly or stops responding when connected to Exchange Server 2003 through HTTP
OR
Microsoft Windows XP Professional Service Pack 2 (SP2). If you have installed Windows XP SP2, you do not have to install the update.
You can also run Windows Server 2003 as the client operating system.
The client computer must be running Microsoft Office Outlook 2003 or newer .
Open Control Panel
Double Click Mail Icon
Click On E-Mail Accounts
Select View or change existing email accounts
Click Next
Click Change
Click More Settings
Select the Connections Tab - Check the Connect to my Exchange mailbox using HTTP Box - Click the Exchange Proxy Settings Button
Enter the Following Settings:
Click OK - Click OK - Click Next - Click Finish
