Allow Relay on a Receive Connector in Exchange 2007

 
 * 1) reate a Recieve Connector in the Exchange 2007 Management console. Name it something along the lines of LAN Relay or Xerox Relay, something that explains why you are creating the Relay
 * 2) Select Custom as the Type
 * 3) Local Network Settings will be left as the Default: (All available IPv4 addresses)  25
 * 4) Remove the 0.0.0.0 - 255.255.255.255 in the Remote Network settings screen and add the IP of the device or the entire subnet you are on.
 * 5) Continue through the Wizard until the New Recieve Connector is created
 * 6) Once the Connector is created, right click and take the Properties of the Connector
 * 7) On the Authentication Tab, make sure that only Transport Layer Security, and Basic Authentication are check off, none of the sub items
 * 8) On the Permissions Groups Tab make sure that only Anonymous and Exchange Users are checked
 * 9) Click OK
 * 10) Open Exchange Management Shell
 * 11) Enter the following command, replacing TEST Relay with the name of the Recieve Connector you created earlier