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How to connect Domain A's Exchange 2003 Server So Domain B can use the server as exchange as well

Both Domains are Windows 2003 Domains.  Trusts are set up between the two domains.  DNS is setup on both domains, and DNS Forwarding is also setup.
I just loaded Exchange 2003 on Domain A and it is working fine.
I would like to setup Domain B to use Domain A's exchange server (with everyone using the same email SMTP extension)
I have loaded Exchange System Management Tools on Domain B's Domain Controller, and did run Forest Prep before install.  So now users in domain B can have exchange tags, but does not do them any good.  Not sure if I am heading down the right path, any help is appreciated.
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frohlich
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frohlich
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1 Solution
 
alimuCommented:
Are domain A and Domain B in the same forest?
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frohlichAuthor Commented:
No they are not in the same forest.
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alimuCommented:
ok, well your exchange organisation boundary is the forest boundary and installing exchange across multiple forests isn't a supported configuration mostly because Exchange is so tightly integrated with Active Directory (see http://support.microsoft.com/default.aspx?scid=kb;en-us;839049).  
You'll have to look at creating accounts for your Domain B users that need exchange in the same forest as Domain A.  Then you may want to look into Outlook Web Access or Outlook 2003 using RPC over HTTP as a delivery solution.
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frohlichAuthor Commented:
Did not want to hear that.  It explains why I could not find any info on it.  Thanks for your help alimu.
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alimuCommented:
sorry about the bad news...
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