Random Failing Websites

[House Of Cards]

Good evening all,

Can anyone recommend the best way to troubleshoot why a few websites are failing to open. I'm trying to figure out which package is the likely culprit, as this seems to have just begun.

I have two examples...

First, www.mtb.com will not open at all; it just times out.

And www.express-scripts.com throws the following error. "The requested URL was rejected. Please consult with your administrator."

I have tried disabling pfBlockerNG, Squid, Suricata, etc... I then reset states, restarted and get the same result with all that off. The only recent change has been enabling the traffic shaper, but I can't imagine how that could do this?

Any ideas how to figure out the issue? There are probably other sites broken as well, I just haven't stumbled across them...

I appreciate the help...

Thanks,
Steven