[exim] Change Received from

Hi,

I need help to change the Received: field. I tried with helo_data in the /etc/exim/exim.conf but it didnt work.

    Received:     from serverName.net (myVhost.net [IP.IP.IP.IP]) by recepient with ESMTP id .... etc

So there are 2 hostnames. The first one is correct, but the second one is a virtual hostname (myVhost.net) which I don't want to appear in outgoing mails.

Any hint is appreciated,

Thank you.