I'm having some trouble with understanding the configuration of our Domain Controllers with our exchange setup. All our users are setup to use exchange recepient policies filtered to the second half of their login name.
e.g. ajohns - "@domain.com" < the domain.com bit
Under active directory when I create a new user it asks me to choose a postfix to the login (the @domain.com) bit but I dont understand where it gets this list of domains from?
I've attached some screenshots to better explain. Any help would be appreciated.