There's a checkbox in the domain mapping plugin about redirecting to the original blog address.
I've looked through all admin screens I can locate, but I'm not sure which checkbox you are meaning.
These are the main options in domain mapping:
# Remote Login
# Permanent redirect (better for your blogger's pagerank)
# User domain mapping page
# Redirect administration pages to site's original domain (remote login disabled if this redirect is disabled)
# Disable primary domain check. Sites will not redirect to one domain name. May cause duplicate content issues.
I've tried several ways of setting up the dns on Plesk including following all instructions in this article:
When I follow these instructions some other domains of mine on the server are also redirected to the new domain for some reason. It doesn't work any better than just setting up domain parking (to blog.wp3domain.com) on the WP3 network domain - which doesn't affect the other domains on the server.
Ron, I presume you mean that it's not possible to alter default folder names in the plugin? Just to confirm, all is set as default - and that I am utilising this plugin: http://wordpress.org/extend/plugins/wordpress-mu-domain-mapping/
To clarify, the browser is being directed to wp3install.com/blog from blog.originaldomain.com - except the browser is now in a very different place - url (inc. all links) and no longer in the name space of the blog.originaldomain.com