This is using MS Exchange 2010 server in MS Windows 2008 AD domain. Recently, I created 1 mail contact with foreign email address - email@example.com. I then added this user1 into one of the distribution List - DL1. But, when open MS Outlook (MAPI), browsing DL1, I can see all other local members but not this user1. Does this mean that for mail that send to DL1, this user1 won't receive? How to make user1 receive as well?