Here is an article you might want to take a look at, it should help you out:
Pentech Office Solutions Inc
www.exchangetrainer.com and www.4mcts.com
Visit www.msexchange.org for practical information on Microsoft Exchange
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> I dont know whether this is possible or not, but I
> would like to clarify.
> My requirement is this, I need to be able to receive
> mails to certain users but they should not be able to
> send mails? I know its possible the other way around! but
> is this possible as well?
> thanks in Advance