When I open my browser and go to http://www.example.org/abc, the webserverlog from server1.internal.org reports a request for http://server1.internal.org/abc which basically means "www.example.org" is replaced with "server1.internal.org" but the path itself hasn't changed from /abc to /.
Am I doing something wrong or is it just not meant to work like the way I'm thinking/hoping?