Originally Posted by GrouchyAdmin

Well, the easiest way would be to set:

@ IN A IP.OF.OTHER.DOTCOM.HERE.COM
* IN A IP.OF.OTHER.DOTCOM.HERE.COM

In DNS.

Then just tell your webserver to use a WildCard, or IP based scheme. Read the Host: HTTP/1.1 header, and dump that on the page like every other worthless pageholder out there.

I don't think you mean a '200' redirect; I assume you mean a 301.. but that's still not quite as 'nice' and just forcing it to resolve to the same place. You will be penalized for that by Google.