I'm using Doncha's domain mapping plugin and, after installing WPMUDEV's sitemap's plugin I wanted to give a try to your domain mapping plugin.
I've installed it, replace Doncha's one, and everything's working fine...but all the URLs are resolving to non-www version. That is, in Doncha's plugin you had the ability to map 2 URLs to a given domain (that is, http://www.mydomain.com and my domain.com), and then choose your default url (in my case, the ones with www).
I've deleted the previous mapping and set it to "www.mydomain.com", but it's not working.
Thanks in advance.