On a new install on Windows server, WP3.1 installed and appears working fine for the primary domain. I have turned on multisite and installed WordPress MU Domain Mapping per instructions found on WP and elsewhere. I get HTTP403 errors trying to access a second domain (using a subdirectory) and I get HTTP404 error trying to access the Dashboard for that directory.
The Network Admin page shows / and /secondary/ with map in latter to secondary.com. When I mouseover the /secondary/ I do not see the option Backend (different version or sign of something not set right?)
Domain mapping has cname set to primary.com (and in my dns I have CNAME set as well as *
Under domains I added secondary.com and it is listed as side ID 2. 1 for / or primary.com is not listed and adding it does not add it. (Why? I notice every picture of this page on install instructions show it yet I did not get it by default, nor can I set it)
During install I copied snipits of code as directed into files. I do not have .htaccess as I am on IIS (or am I missing something here?)
Anyway, it is not working and I could seriously use some help as to next steps to start over or recover this install.