How to create All User Email Distribution Group

You could create a distribution list and add every domain member to it.  There should also be a default that the domain creates initially that will be based on your domain setup.

I am trying to get out of having to add every user in the domain to the group one by one.  I have a group, Domain Users, that every user is added to by default when they are created.  I have that group as the member of the All Employees email distribution group, but nobody receives any email sent to the group.

Did you give the distribution group an Exchange email alias?  You will need to modify, or create a new distribution list, if you wish, on either the Exchange server or another server as long as it has the System Manager for Exchange.  This install provides the necessary snap-ins for the AD Users and computers to create the Exchange email alias for your group.

If you launch AD Users and computers from your Exchange server, create the Distribution Group, the wizard will walk you through the email creation.  Then just add your regular AD user accounts to this group.

The group has an exchange email alias.  It is a group that has been around for a while.  In the past we would manually add users to this group.  However, we no longer wish to do this.  I want to have users automatically added to this distribution group and have users who are currently present in this group is well.