Exchange 2013 Contact with SMTP Return
Create an new Mail contact that will be used to forward the messages back to mailive01@knowledgefront.com
Set the External Email Address to be mailive01@knowledgefront.com and click save.
Edit the mailbox created above. Go to Mailbox Features, scroll down to Mail Flow, and click View Details under Delivery Options.
Check Enable Forwarding, click Browse, and select the Contact created in Create a return contact