Here's what I'm trying to do
I want a maintenance page up on mysite.com, but I want to still serve my app to our internal organization
The way I'm able to achieve serving mysite.com to my organization is through zone lock down, but I am unsure how to approach the outside world since they don't get anything
Take a look at this. I'm using this to achieve the exact same thing you mentioned. I've also provided some extras options for anyone else who might need them.