Hi,

In my company, we got 3 different domains, one domain at each site.

1st site = DOMAIN1 - W2k DC and Exchange 5.5 running on NT4 server

2nd site = DOMAIN2 - Exchange 5.5 running on NT4 Server (PDC)

3rd site = DOMAIN3 - Exchange 5.5 running on NT4 Server (PDC)

Each site is independent of each other.

I'm about to upgrade Exchange 5.5 from DOMAIN1. What I want to know is would
it have any affects on my DOMAIN2 and DOMAIN3? Exchange 5.5 in each domain
has nothing to do with each other however, when I looked in the Active
Directory Domain and Trusts under a DC in DOMAIN1, it says that DOMAIN2 and
DOMAIN3 is a child domain of DOMAIN1 and they trusted each other. Would this
have any impact on my Exchange upgrade in DOMAIN1. As far as I'm concerned,
email, data, user accounts, internet access etc... on DOMAIN2 and DOMAIN3 is
independent of other domains.

Also, in my DOMAIN1, If I do an upgrade of the NT4 Server to W2K server, do
I have to setup Active Directory on this upgraded server? Would this have
any impact on my existing Back Office Server 4.5 running on NT4 Server
before? I already had 3 W2K Domain Controllers in this domain.

thanks in advance

katchme