My friend has a very small office setup, doesn’t have a server but he has a network printer with a feature to "scan to e-mail". To use this feature you need to configure an SMTP gateway address on the device.
Now, since he does not have a mail server in his office I was thinking of configuring my Exchange 2010 so that he can configure the printer to use my mail server as a gateway.
What do I need to configure on my Exchange in order for him to use it as an SMTP gateway?
Simple steps would be much appreciated.