Two forests trusted each with its own Exchange organization

rjbarlow

Hello,

I asked on what happens if there are two AD forests separated, each of which actually containing an Exchange 200x organization AND next, those two forest are connected through a trust; so, now we would have one forest and two Exchange organizations?
That's would be a contradiction having read many times that one only Exchange organization is supported per forest.
I have intention to make a lab for that, but for now I can't for lacking of time, but I would like to have some suggestions meanwhile.
It can be that my concept about AD forests is still lacking of something.

Claymoore

It would be two forests with two Exchange organizations. The trust between the forests doesn't combine the forests, rather it gives you addtional Exchange functionality as opposed to two completely separate forests (where you would need IIFP/MIIS/ILM to share the GAL and Free/Busy info). Exchange can be deployed in a dedicated forest, but you get more features if everything is in the same forest.

Using Multiple Forests with Exchange
Using a Dedicated Exchange Forest
How to Deploy Exchange 2007 in an Exchange Resource Forest Topology

rjbarlow

Thanks much Claymoore, I greatly appreciate your answer; please let me now ask You one more thing for my clearness: I recall that an AD forest is such, when all the GC servers share the same Global Catalog; so combining two forests born separately with a trust does not make that, I deduce. That is true?

Claymoore

That's correct - 1 Global Catalog per forest. Although you can (and should) have multiple global catalog servers in your domains and forests.

http://www.techexams.net/forums/70-294-windows-2003-active-directory-infrastructure/39031-testing-soon-quick-answer-needed.html

rjbarlow

Strongly thanks buddy.