POSTFIX - rewrite


I want to make a rewrite for receipt address in postfix, at this moment I have: as my email address … and as an alias. The problem is that … when someone send me an email to it is delivered to my but the recipient in headers is

I use an support application who matches recipient headers in order to allocate the request to the designed department … how could I set postfix in order to rewrite recipient headers to ?

In other words … if I send an email to … I want the recipient headers to be rewritten in

I’ve read about and … tried couple of settings but didn’t work at all.

Help … ?!