What is the difference between a primary and a non-primary connection agreement?
A primary connection agreement replicates existing directory objects. It also creates and replicates new directory objects in the destination directory. A non-primary connection agreement only replicates information in pre-existing objects. A connection agreement type has two check boxes, which are selected by default even if a connection agreement already exists. These are “This is a primary connection agreement for the connected Exchange organization” and “This is a primary connection agreement for the connected Windows Domain.” If you are using more than one connection agreement to replicate Microsoft Windows® 2000 user accounts for a single Exchange organization, there should be only one primary connection agreement. Using multiple primary connection agreements to replicate the same Exchange Server 5.5 organization will result in the creation of duplicate objects.
