How to create a catch-all subdomain in IIS 7.5?

Question

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.

Answer 1

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.