User1967761114 posted
Hi robby32,
According to your description, I think the understand of bindings for you was wrong.
In normally you can just use the IP in the bindings without the Host name as long as the the IP is dedicated to that one domain. When you start using the same IP as a shared IP for multiple websites, that’s when you need Host Headers. When you try
to browse to a domain on a shared IP, it when then find the www and non-www headers and know where to point the request. Without host headers in this situation, the site will try to resolve by IP only and since there are multiple sites on the same IP, it will
not work.
For more details about bindings, you could refer to the following link.
https://blogs.technet.microsoft.com/chrad/2010/01/24/understanding-iis-bindings-websites-virtual-directories-and-lastly-application-pools/
If you have any other questions, please feel free to contact me any time.
Best Regards
Even