I want to create a domain in GW 2014. Any email sent to that domain get delivered to a single "catch all" mailbox. The email would keep its original TO address.

This is for a faxing solution that expects the to address to be 9991112222@fax.company.com to go to a specific mailbox. Of course the value to the left of the @ will change.

Supposedly, you can do this in Exchange.