Exchange distribution groups are collections of users, contacts, and other distribution groups that are represented with a single email address in the Global Address List. When a user sends an email to the group email address, all members of the group receive the email.
When the Hosted Exchange service is provisioned to customers, users can view distribution groups through the Global Address List using Outlook, as well as create and manage distribution groups.
Users who create distribution groups are known as owners. Additionally, group ownership can be assigned to a group of Exchange users or a security group. Group owners can add and remove members through Outlook.
Full Customer Service Administrators can create and delete groups, manage group members, and configure group email alias permissions and member email restrictions.