Hello AdminTravis,
I believe that what you need is to configure a reverse proxy for the landing site domain;
https://www.microsoft.com/en-us/download/details.aspx?id=44940
If you are using a third party Proxy solution, I would recommend to check with the manufacturer support or forums in order to reconfigure your current solution instead of adding another system to your environment, of course.
Hope this helps,
Best regards,