I had to reboot the hosting server today September 4th, 2015 and when this happens services (hosting and email) are unavailable for a short time.
I noticed the problem first around 9:00am this morning.
It looks like the server “hung up” similar to how personal computers just “freeze.”
This has only happened one other time in the ten years I’ve been providing hosting services.
As of 10:21am Eastern everything is back up and running properly, based on my testing.
I don’t expect any further problems.