Migrated from Exchange 2003 to 2010. In 2003 I could open up a users profile in active directory, view their email addresses and choose which one I wanted to be their primary SMTP by right clicking if I remember right.
In 2010 I don't have that option and need to change my primary SMTP address. It reverted to my username firstname.lastname@example.org when I've always had it set to one of my aliases as my primary SMTP so email@example.com for example. Not seeing a way to switch it back to this.