We are seeing service is unavailable on few website on win19 server and we are checking it.
It looks like there may be some more attacks on the server, we are checking it out now.
We have things running well now, but keeping a close watch!
We are rebooting the server to apply one major change in settings now.
Sorry, it was only down about 1.5 minutes for that reboot, it is all back up and running for a while now.