We had a power failure in our small test lab and the samba server crashed after the UPS shutdown procedure didn't work quite like it was supposed to. Upon reboot, the services started fine but none of our 3 XP test machines were able to login to the Samba PDC. The Samba logs showed the following...

_net_auth2: creds_server_check failed. Rejecting auth request from client FLUENT02 machine account FLUENT02$

No problems at all in the previous 6 months with the same setup other than an older samba version, even surviving a few power outages along the way.

Since this is a testing setup I tried restoring all the samba files in /etc/samba and /var/lib/samba from last night when everything was working and then restarting the services but we still couldn't login. Finally just removed and readded the machines to the domain.

Is there something obvious that I missed? I would have thought that restoring the files would have worked but no luck unless I missed a critical file or something. Like I said, this is a testing/staging area so it was no big deal but I'd like to find out if there's an easier way than readding all the machines in case it happens to our production server. We're a pretty small shop with only 23 client machines but I do the admin stuff plus my engineering duties so I try to be prepared as best I can for disaster but apparently I failed this time! And I will test the UPS shutdown procedure so hopefully this won't happen again.

Fedora Core 4
Samba 3.0.23b using tdbsam

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