In order to create read receipts in Entourage you must do the following to enable:
1. Open Entourage and go to Tools/Accounts. 
2. Under Mail, edit the account you want to send from. 
3. Select Options; under 
Additional Headers, add in the following: 
Disposition-Notification-To ![Entourage Headers[4] Entourage Headers[4]](http://lh3.ggpht.com/_iFO88An66CQ/Si4wuL14_FI/AAAAAAAAAIA/eYfXWobNlkw/Entourage%20Headers%5B4%5D%5B2%5D.jpg?imgmax=800) 
 
4. Under Value, type your email address.
 

 
  
 