Is it possible to configure multiple domain names to point to the same site without the visitor seeing the URL change (i.e. using a 301 redirect or similar)? I'm running apache as the web server. Thanks
That's exactly what he doesn't want. This is usually the case, but if you run a CMS like wordpress, it will always redirect to one domain.
Just add the additional domains as alias domain in ISPConfig without configuring any kind of redirect.