I have just finished setting up OCS 2007 R2 standard edition in my environment. It works ok, but not 100%. In my environment, the domain name differs from the email address suffix. so my users have to log in with their domain address (i.e. user@domain.com). I need to get them to be able to log in with their e-mail address (i.e. user@email.com). How do I change this? When I enable the users in Active Directory Users and Computers on the communications tab, the only option under the drop down for sign-in name is domain.com. How do I add in the email.com option?