I have a service e-mail accont that 5 people share. one person has full e-mail box control, I did this by going to the exchange server going to AD finding the user going to properties then mailbox rights and giving full control. For the rest I want read only, well I do the same thing but give read only. When they go to open the e-mail box in their outlook they get the message, "unable to expand the folder." What am I doing wrong?