Exchange 2003 - Only allow internal email - No external email

What is the best way to allow users on an exchange 2003 server to only send email to each other and stop users from sending to emails outside of our domain / the outside world?
itiadminChief Technology OfficerAsked:
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yoyyoConnect With a Mentor Commented:
think i better provide you the step-by-step guide. :)
here you go dude.

http://www.msexchange.org/tutorials/MF009.html

-corra[isat]
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teepee2Commented:
You can probably do it in system manager:

System Manager --> Connectors --> <your smtp connector> (right clikc and properties)
Choose the Address Space Tab... I belive you can restrict it from here

Hope this helps
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yoyyoCommented:
add users that has permission to send internet mail to a user group. then in system manage/connector/<smtp connector> to allow that particular group of users only.

-corra[isat]
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itiadminChief Technology OfficerAuthor Commented:
How do you stop all users from sending externally?
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teepee2Commented:
great article!!
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yoyyoCommented:
yeah, hope it help. :)

-corra[isat]
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