How to create a catch-all subdomain in IIS 7.5

cname-recorddomain-name-systemiis-7iis-7.5subdomain

How can I create a catchall for any unspecified subdomains of website.com in IIS 7.5 on Windows Server 2008 RC2?

I have already configured a CNAME DNS entry for *.website.com pointing to website.com.

The behavior I am trying to achieve is that any subdomain of website.com, such as foidhfsio.website.com, will resolve to website.com, unless I have specifically defined another site in IIS with the requested host header.

Best Answer

Simply leave the host header from the binding empty and it should do the trick.

IIS headers don't support wildcards per se, but if you leave the host header empty, it will catch all traffic for that IP address/port.

The more specific headers from other sites will catch first, so you can just consider this project as the default for your particular IP address.

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Your problem is simple. Add a '.' to the last line. that is, you want:

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The tailing '.' at the end of the name means "do not append the current origin name to this"

If you leave it off, you get (in this case) "domain.com.domain.com."

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Then, any single website with multiple or wildcard subdomains but at a separate IP will work with IIS listening to all incoming requests on that IP.

Best Answer

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