I recently installed an Exchange 2010 server for a client who had been on Exchange 2003. This client has a copier/scanner/printer in the office and they like to send out scans to clients who are not on the internal network. I had made a relay entry for the copier's ip address in Exchange 2003 and everything worked great.
I am trying to do the same with Exchange 2010. I assumed it would be on the receive connector but am a little lost on how to add a single internal ip so that the scanner can send out through the Exchange 2010 box.