Fowarding / Copy Email Issue

I am trying to setup an alias on my domain (printer@mydomain.com) that will forward or send a copy to my Epson Connect email address (myprinter@print.epsonconnect.com) and make it easier for me and my family to remember the address and send documents to our printer from anywhere. The problem is that when Interworx forwards emails it keeps the “printer@mydomain.com” email address as the “to” address and I get a bounceback from epson saying that printer does not exist. Is there a way to forward or send a copy of an email to that “myprinter@print.epsonconnect.com” and make sure that it is the “to” address? I hope this makes sense.

Thanks in advance!