I am running a 3.0 multisite subdomain installation with Donncha's domain mapping plugin, and have several domains mapped as follows:
mainsite123.com blog1.mainsite123.com -> blog1.com blog2.mainsite123.com -> blog2.com blog3.mainsite123.com -> blog3.com etc...
I want to map an additional blog as the following:
blog4.mainsite123.com -> blog4.someotherdomain.com
where the main site of
someotherdomain.com is non-WP, ASP content, hosted on an entirely different server.
how do I accomplish this task, if it is even possible?
the A-records for all of the above domains/hosts point to the WP install as I outlined in the post at: