I have a root domain and two child domains. Child1 has been around a long time and includes an Exchange server. Child2 is being added and I want to be able to configure the users to use the Exchange server from Child1. That is my central goal.
Thanks to help from CompanionCube in my previous thread, "Procedure to host two AD domains on one Exchange server?", I have run domainprep on child2 and was finally able to create an RUS on the Exchange server for child2. From what I have been reading, those are the only two steps that I need to take to allow child2 users to take advantage of child1's Exchange server.
My problem is that I am running Exchange 2003 and Child2's DC is a Server 2008 box and Exchange 2003 Management Tools won't install on Server 2008. My workaround is to install the Exchange Management tools on a Root DC and use an enterprise admin to create accounts, but I don't want anyone fiddling around on my root servers. They don't do much and I like it that way just fine.
I found this thread:
that points to a potential solution. Copying the DLLs into place is easy, but I can't seem to register maildsmx.dll. I'm logged in as a domain admin and "run as" a command prompt as administrator, but when I kick off regsvr32 I end up with the following error:
Access is denied. Facillity: Win32 ID no: c0070005 Microsoft Active Directory - Exchange Extension.
The module "\windows\system32\maildsm
x.dll" was loaded but the call to DllRegisterServer failed with error code 0x8000ffff.
Am I going to be able to use the exchange tools for my Child2 domain - other than through the root domain?