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One Exchange Server in Two Forests

I have two companies (2003 Servers), company1.com and company2.com. Each company has a separate domain in a separate forest. There is a two-way trust between the two domains in the two different forests. Company1 has an Exchange 2003 server. I would like to be able to assign Exchange boxes to users in Company2 and have the single Exchange server in Company1 handle all mail for Company2. Is this possible or is there an alternative solution?

kyodai

An exchange server can only be assigned to one forest. However, using connectors you can connect the organizations which should be sufficient. I'd think about migrating this into one forest and one AD, i think with recepient policies you will easily be able to manage both companies in one forest anmd save loads of resources as right now you have doubled administrative work. We have several domains from different companies in our forest and not having any problems.

wpathan

We can have only one exchange organization per forest as already said above, hence I completely agree to migration Comany2 to your Company1 Forest.

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Nitin Gupta

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bdesmond

The resource forest model is the way to go - Company1 would be the "Resource Forest" in the eyes of Company2.

There's nothing to do here with connectors, and there's no reason you need to collapse the forests into one really.

Thanks,
Brian Desmond
Active Directory MVP

Nitin Gupta

This is what I had said :-)
Cheers
Nitin Gupta (gupnit)

cberrymd

ASKER

Any links for setting this up with Server 2003 and Exchange 2003? Everything above was for 2007.

Thanks

Nitin Gupta

http://technet.microsoft.com/en-us/library/bb124677(EXCHG.65).aspx