Strange DNS Behaviour after W2K SP4
Date: Fri, 1 Aug 2003 23:32:11 +0800 To: NTBUGTRAQ@LISTSERV.NTBUGTRAQ.COM
Have just been trying to diagnose a problem with an AD Domain gradually
loosing all of it's DNS records (in particular Domain Controllers). It
appears that DNS was not accepting active DNS re-registrations for W2K
systems. Eventually DCs can no-longer find each other and replication
starts to fail.
It appears that SP4 must change the way in which W2K systems register with
DNS, which causes registration to fail if the site has a "Single-Label" DNS
Name (i.e. an AD Domain name without a period '.'). The site I was looking
at had such a domain name.
Finally located KB 300684 (Need the updated version off the MS Site which
includes notes on SP4) which describes what is happening, and fixes.
Thought I would pass on this info, as the results of this is quite bizarre,
slowly taking the whole domain down, and because it becomes noticeable some
time (> 1 week in this case) after applying the service pack, the
association between the problem and applying SP4 may be hard to make.
Adrian van den Avoort
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