Redirecting to port 3000 if accessed by a certain domain in IIS

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http://serverfault.com – I'm running IIS on port 80 & Apache on port 3000. How can I have IIS to redirect requests with a certain domain name to the Apache on 3000? For example, requests to "x.com" would eventually lead the user to, while requests to "y.com" would bring them to Its all setup on windows server 2008 R2. (HowTos)