I have WP 3.3.2 with multisite enabled. Donncha's domain mapping is installed in the mu-plugins folder. There are a little more than 76 blog ids mapped. I've been looking for a cross domain single signon and see the WPMU supports it (if I'm interpreting this correctly).
subdomain3.newmain2.com (mapped to http://www.newmain3.com)
If the person logs into any of these sites then I'd like them to be logged into all of them.
Is this possible?
OK. If yes then comes the next series of questions.
I have Donncha's domain mapping installed. What issues will I have removing his plugin from the mu-plugins folder and installing this one into the /plugins folder? Do I use network activate? Can I still use mu-plugins and so I don't have to activate it for each site?
Will I have to remap all of the domains?
Is there a new database table created with this plugin?
Thank you. I'm sure I'll have more questions as I read through things.