Okay. I have something odd going on that I can't seem to nail down.
I work for a University and we have a home-grown system that monitors all the lab computers around campus to see if someone is logged on (headcount tracking). Every few weeks, that system will suddenly show labs as empty that are not. In troubleshooting, we have found that those empty seats result from those machines having lost their record in DNS. The machines can't be pinged by hostname since there is no DNS entry anymore. The machines are still online (ping by IP works, remote management by IP works, computer is still usable). It just drops out of DNS. Today this happened in the middle of the day. The machines worked fine until around 1pm or 2pm. I don't show anything in logs on the DNS servers that look relevant. Does anyone have any ideas on what I can look for? It is an odd one because it is random when it happens and random as to which machines are affected. It usually happens to a full lab of computers but other machines in that building are unaffected. Any help will be greatly appreciated! Thanks. ==================== Craig M. Sauvigne System Administrator Winthrop University Rock Hill, SC 29733 sauvig...@winthrop.edu SC143 ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~
