What's the best practice for creating an "all company" distribution list in Exchange 2003/AD. I was going to just use "Domain Users" as a dist group, but then emails would go to system users like IWAM_MachineName (right?). Can I create a new distribution/security group that new domain/Exchange users are automatically assigned to at creation so the admin doesn't have to remember to add new users to the "everyone" group? Ideally this distribution group would not be available to outside email senders. Hopefully there is an obvious solution that I am overlooking. Thanks.