Internal vs External Domains

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From: XXXXXXXXXXX (XXXXXX_at_lvcm.com)
Date: 04/28/04 

Date: Tue, 27 Apr 2004 23:02:32 -0700

Hi Everyone:

I am planning an Windows 2003 Active Directory domain for a client company.
The external domain name, for example, MYDOMAIN.com is registered and has an
active website on the Internet. The internal domain name under AD is
inside.MYDOMAIN.com.

Also, Exchange 2000 server is on the internal network to process mail on
user accounts such as user@MYDOMAIN.com and user@inside.MYDOMAIN.com who is
the same end user.

    1) Is this separations sufficient to maintain security between the
external vs. internal domains? (Assume hardware firewalls are in place
etc.)

    2) Would AD see inside.MYDOMAIN.com as the root domain or would it
be seen as some kind of child domain?

    3) What other domain issues should I be concerned about?

    4) What other Exchange issues should I be concerned about?

Thanks for any input and help.

Oren

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