How to Setup and Configure the SMTP Service for Windows Server 2012


Configuring the server so you can send mail using instead of ‘localhost’ or the server’s IP address.

If you add the following line to the server’s hosts file it will map to which is localhost. Please note this would need to be done on each server as reverse NAT translation is not supported.
How to edit the server’s hosts file:

Beginner Geek: How To Edit Your Hosts File