I know I have seen this before on the forums but could not find the thread.
A client of mine has just registered a domain with DreamHost. I am going to host their website on a WordPress multisite I have; however, DreamHost will not let me add their domain because it is already in the DreamHost system.
I think this is to prevent some kind of fraud with the Promo system; however, in this case that would not be applicable since the person is not getting any kind of promotional deal, and no hosting. They just have one domain registered.
I guess I could log into their account and set an A Record for my VPS?