[Exim] mailforward to an other mailbox

Hi all!

I have to void a problame. We have an exim server and a user have an emai
addressel in the firm and in the hotmail too.
When he get an email to user@??? . The server have to send this
message to user@??? . So the user have to see same thing if he check
both email.

What's a sollution??

Thanks
Akos