I was doing half a dozen things at once and got into the wrong terminal and accidentally rebooted one of the physical servers before I had intended to and without stopping virtual servers first, and under this circumstance it takes forever and a day to reboot so it will probably be 15-30 minutes before the mail system and many of the shell servers is available again.  My apologies but was trying to get kernel upgrades in place to address a potential security issue and two older machines required a lot of modification to run a modern kernel.