Exchange 2010 Contact with SMTP Return

First a mailbox must be created to receive the incoming messages from Knowledge Front

Open your Exchange Management Console (EMC) and under Recipient Configuration select Mailbox
Right click and select New Mailbox
Select User Mailbox
Select New User
Create a user.
Assign alias and select mailbox database on Exchange 2010 server
Next, a contact must be created in the Exchange Organization

Under Recipient Configuration select Mail Contact
Select New Contact
Give the contact a name and alias. Assign the External e-mail address to be type SMTP and make the address

mailive01@knowledgefront.com.

Note

It is important to return the message to [mailive01@knowledgefront.com]{.title-ref} and not [mailive@knowledgefront.com]{.title-ref}. This will prevent Exchange from dropping the message if it thinks there is a forwarding loop.
Now assign the Contact to be the forwarder for the mailbox

Under the properties for the Mailbox, select the Mail Flow Settings tab and select Delivery Options
Check the Forward to: box and select the previously created Contact as the forwarding address