I have a development server at test.domain.com on a separate dedicated server from my live site, www.domain.com.
test.domain.com is a mirror dev site. It's not linked to from anywhere but google has indexed it. For fear of dup content, I don't want Google to crawl it.
How do I exclude the test.domain.com? Do I block it using the robots.txt from the www.domain.com (which is on a different server)? Or do I block it from the robots.txt from the subdomain of the actual test.domain.com server?