For end user, try the following:-
Find your server information
Login to Outlook Web Access.
Click on Options in the top right hand cover of OWA.
Click on About in the navigation bar on the left.
Find the entry for Mailbox server name and write it down as you will be using it later.
Create your Outlook profile
Make sure you have Outlook 2007 installs (as of right now, only Outlook 2007 is supported).
Open the Control Panel.
If you are running 64-bit Windows, double click View 32-bit Control Panel.
Doube click Mail.
Click Show Profiles.
Click Add.
Enter a new name for the profile. i.e. Your email address
Click OK.
Click Manually configure server settings or additional server types.
Click Next.
Select Microsoft Exchange.
Click Next.
Enter the mailbox server name (that you wrote down from the previous section) in the field Microsoft Exchange server.
Enter your full name in the field User Name.
Click More Settings.
If you are prompted with an error that the action cannot be completed, click OK.
Click Cancel.
Click on the Connection tab.
Select Connect to Microsoft Exchange using HTTP.
Click Exchange Proxy Settings.
Enter the mobile device URL for your region.
Select On fast networks, connect using HTTP first, then connect using TCP/IP.
Click OK.
Click OK.
Click Check Name.
Enter your User Name and Password
Click OK.
Your profile should now have resolved and the correct Microsoft Exchange server should be displayed.
Click Next.
Click Finish.
Click OK.
Source:
http://blog.migrationwiz.com/2009/06/manually-configure-outlook-for-exchange.html
