Setting up a group for sending/receiving internal mail only

Hi there.

I have been trying to create a group in Active Directory (Windows Server 2003 Standard Edition) that would allow for it's members to send and receive internal mail only (Exchange 2003 SP1).  No internet based e-mails are to be sent or received for this group.  I have been trying to do this using the following procedure...

http://www.msexchange.org/tutorials/mf009.html?printversion

...but so far have been having no luck.  I don't receive any error messages at any point, and have followed the first section “Restricting users from sending internet based e-mail” step 1-7, to the letter yet I can still send internet based messages from a user that I add to the specific security group.
Is there another procedure that someone could suggest which proves to be more successful?

Many thanks.



Ross
Rockstar_NorthAsked:
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SembeeCommented:
Try my version.

http://www.amset.info/exchange/restrict-internetmail.asp

Any reason why you aren't on Exchange 2003 SP2?

Simon.
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