Coexistent exchange 2003 and 2010, new users do not work
i have a scenario in which exchange 2003 and exchange 2010 are working coexistent until migration is done. when i now create a new user with mailbox on exchane 2003, the user will not show in adressbook and won't working right. interesting is, that every new created user doesn't have an x400 property in the mailtab.
what is the right way to create working new users in this scenario?