Question : Internal server name showing in URL

I have a SharePoint server on a server called 'serverx64'. Internally users access it via http://serverx64/sitename.

I am trying to make the server accessible from 'the outside'. The NAT has been worked out and if external users point to http://server.example.com/sitename they are challenged with IIS authentication, but as soon as they pass that, the url in the browser changes to http://serverx64/sitename and, of course, fails to find the server.

Why is the server name changing from server.example.com to serverx64 when the user tries to load the site?

Dave

Answer : Internal server name showing in URL

You need to setup alternate access mapping in central admin.

you can extend your web application to internet and point it to  http://server.example.com.