I have followed the following steps to create a GAL which 1 condition:
Create a new gal named Test.
R click and select properties.
Under General, click Modify.
Uncheck all except "users with exchange mailboxes."
Click the advanced tab.
Drop down field and click User-> Email Address, then select "ends with" and type in your test domainand click Add.
Hit Find Now to make sure you get the expected results.
That should give you a list of the users with that domain as an email address.
In regards to adding more conditions to the GAL filter.
It seems that if I add another similar condition that ends with a different domain name, it seems to be filtering CONDITION 1 AND CONDITION 2 which will not show any results when I test it with Find Now, how can I specify CONDITION 1 OR CONDITION 2 so that all email address that ends with either A.com OR B.com will turn up in the filter.
Thanks in advance.