Setting up domain mapping


Can someone explain how I can map a domain to a wordpress blog in multisite that’s setup with user blogs having a file extention and not a subdomain?

I have a test blog that I setup at

I am using a spare domain name called for which I added DNS “A” record pointing at the IP address of my server:

I have placed the domain mapping plugin in the correct files as required. I have also setup my dedicated ip to point to my website sign up page.

However when I add the domain to the domain mapper nothing happens. Have I missed something?