Posfix how to redirect some recipients to another server?

Question

System administration

Colleagues.
The mail server with local users is raised.
In parallel, another server with the same domain was raised within the network.
It is required to redirect mail coming to "some" addresses -> to that internal server.
As far as I understand relay will not help here. What will help? Alias? But I can’t figure out how to redirect letters without changing the content and headers.

Answer 1

Or in /etc/postfix/virtual:
And then "postmap /etc/postfix/virtual".
Or in /etc/postfix/transport:
And then "postmap /etc/postfix/transport".