Exchange 2013 - looking for guidance with owa issues

I won't be back in front of the boxes for about a week but it's the same config on my lab box. FastL4 with source_addr (that's it) and the iApp config created by using SSL bridging, more than 6,000 addresses and yes to all services. Standard config. Only the L4 cfg is working.

I can answer any questions you might have about the config, though. My OS is 11.4.1 hf3.

Thanks,