I have a distribution list that we have locked down and only allow certain users internally to send to it. Now they want all the users of a certain external domain to be able to send to this list. Can someone provide me with instructions on how to do this if possible?Thanks -- dee

If you're running Exchange 2007 or 2010, you can use a transort rule on your hub or edge servers to drop/bounce email to that DL unless it's from that domain.

Thanks for the response.dee

Guys, Could you share with me how to implemet this method Please confirm and advise