Exchange 2007 -Restrict User(s) Address List
Found this very helpful..
Using this, ADSIEdit and ADModify 2.1 I have now managed to limit pupils to only see the address list for their year, and their teachers..
They cannot see the GAL or address lists outwith their year (or any member of staff not in their "department")
The site says to use Exhange Management Shell - but i did it fine in the Exhange Management Console ... prob cos i have SP1...
Not tried it with Outlook Client - only with OWA 2007...