hi knottyrope

thanks for the link iemstest was useful. i cannot resolve the bes admin account using the vip of the cas array i created even though it is pingable. i can however resolve legacy 2003 names using mailboxes that still exist on our old server. is this a cdo/mapi problem relating to exchange 2010? all permissions are applied correctly including view only admin, send as , receive as, and have added the throttling policy.