IIS 7 and Above
Configuration & Scripting
Installing SSL for Custom Domains in IIS using LetsEncrypt
Re: Installing SSL for Custom Domains in IIS using LetsEncrypt
Sep 23, 2019 09:52 AM|Yuk Ding|LINK
If you only have one site in your IIS and you want the website accept request from other custom domain. Then you could create a http binding with all unassigned IP and null hostname.
However, it is impossible to apply SSL over https without adding binding host header in IIS. When we need to enable ssl certificate for IIS, we need to specify certificate hash for certain domain and port number on server side so that IIS would know what
private key should be return. If IIS support specify SSL from client side, then SSL certificate would never be safe any more.