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Where in our Exchange Server 2003 can we assure that open relay is not being used and also when we try to run the helo command to check that Exchange is working, we get a message that it is not a recognized command? &nbsp;
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Where in our Exchange Server 2003 can we assure that open relay is not being used and also when we try to run the helo command to check that Exchange is working, we get a message that it is not a recognized command?  

Exchange 2003 settings

Networking is the process of connecting computing devices, peripherals and terminals together through a system that uses wiring, cabling or radio waves that enable their users to communicate, share information and interact over distances. Often associated are issues regarding operating systems, hardware and equipment, cloud and virtual networking, protocols, architecture, storage and management.