Hi,
I am currently developing a migration plan for a Cross-Forest Exchange migration.
Forest A is our existing domain and Forest B is our new forest we are migrating into.
The plan is to have a period of coexistence between both forests.
Our core business web application will be the first application to be migrated as we need the resources in the new environment for it.
I used the Exchange script that creates the user object from Forest A into Forest B and then used ADMT to migrate the associated attibutes, Password and SID History. This means that my users appear in both Forest A and B and as far as the user is concerned, they use the same account to log onto our business app.
My query is what is the best way to do the cross forest coexistence? I have read many articles online about using GalSync to create a centralised GAL using contacts. Can I still do this bearing in mind that both Forests will have Mail User accounts and not Contacts??
Im a bit confused as to how I should do it.
The goal here is to allow cross-forest calendar delegation and also display free/busy information.