This is using MS Exchange 2010 in w2k8 ad domain. Recently, I created 2 mail contacts with 3rd party email addresses. Can these 2 contacts shown in the GAL? secondly, I joined these 2 contacts into one DL, and then in my MS outlook, I can't see these 2 contacts but other mail addresess are visible, why? Is this the restriction by exch 2010? How to make it seen?