I just recently installed the domain mapping plugin and ran into a slight complication. I have the correct settings for sunrise.php as well as being pointed to the correct server. When I mapped my first domain, I was trying to map http://www.incresolco.com to http://www.theintegrasolution.com/www/incresol.
I noticed as I was mapping it, i typed in the domain incresolco.com and pressed "add". It then changed it to "incresolco.com/www" which points to no where.
My admin for that site is now accessible so any feedback would be appreciated!