I'm hosting a site in IIS 7 that's using a wildcard certificate from RapidSSL. To date there's been no issues of people not being able to connect to the site with SSL. Now we have a client who can't connect from every machine in their network. The client machines are Red Hat and Windows XP. They can make HTTP requests ok but HTTPS return a 403.16 error. Since they aren't reaching our ASP.NET code there isn't any debug info I can get from there and nothing from IIS is being logged.
The requests are coming from both a web browser and a custom piece of software sending us notifications. Neither works.
Things checked so far:
- No errors in the Application Log
- Verified the entire certificate chain is installed and not just the client certificate