Exchange 10 server was deployed, this organisation was not using Address List Segregation.

Despite this, I cannot get any items to display in the Global Address List in Outlook – however the list is fine in OWA.

Some relevant attributes in ADSI:

CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=mail,DC=local

addressBookRoots: CN=All Address Lists,CN=Address Lists Container,CN=mail,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=mail,DC=local

globalAddressList: CN=Default Global Address List,CN=All Global Address Lists,CN=Address Lists Container,CN=mail,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=mail,DC=local

CN=Default Global Address List,CN=All Global Address Lists,CN=Address Lists Container,CN=mail,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=mail,DC=local

Permissions:

Make sure all users can read list and there are no user Denys.