Postfix for duplicating mail to two relayhost
I want to duplicate every mail received by postfix (configured as SMTP relay) to two differents servers. I know that is strange but i have to do this.
Example: every mail received for every user of my domain must be routed by postfix to my old mail server AND to my new server (newserver.domain.com).
Mail adresse must be the same for both server.
I have considered bcc command but I think that this command impose me to change mail addresse I have to change the domain name.
If anyone have an idear to do this it would be very nice.