Thanks, Pierre What DNS settings are configured on each of your DNS servers (in terms of their primary and secondary DNS lookups)?
Regards, *ASB **http://XeeMe.com/AndrewBaker* <http://xeeme.com/AndrewBaker>* **Providing Virtual CIO Services (IT Operations & Information Security) for the SMB market…*** On Fri, Jul 5, 2013 at 3:21 AM, Pierre-Marie Camilleri < [email protected]> wrote: > Hi Andrew**** > > ** ** > > Thanks for replying. Yes, all users were impacted. As far as I could see > DNS replication seems to be working. However, when querying certain things > I discovered some problems.**** > > I was able to resolve all sites from the additional DNS server but not > from the primary DNS server. I next looked at the DNS manager and when > looking at the primary DNS server I am seeing Automated Test Query Failed > message. **** > > When checking the System Event Log of the primary domain controller I am > seeing 5774 Events (NETLOGON) being logged every day.**** > > ** ** > > Regards**** > > Pierre**** > > ** ** > > ** ** > > *From:* [email protected] [mailto: > [email protected]] *On Behalf Of *Andrew S. Baker > *Sent:* 04 July 2013 18:47 > *To:* ntsysadm > *Subject:* Re: [NTSysADM] Unable to browse the Web when additional domain > controller goes down**** > > ** ** > > Hi Pierre,**** > > ** ** > > Were all users impacted, or only some of them?**** > > ** ** > > How is external DNS handled? Forwarding Servers or Root Servers? > > Was DNS replication working properly prior to the shutdown?**** > > ** ** > > Can you resolve all the sites in question from the DNS server?**** > > ** ** > > Any eventlog messages?**** > > ** ** > > Regards,**** > > > **** > > **** > > **** > > *ASB > **http://XeeMe.com/AndrewBaker* <http://xeeme.com/AndrewBaker>* > **Providing Virtual CIO Services (IT Operations & Information Security) > for the SMB market…***** > > ** ** > > ** ** > > On Thu, Jul 4, 2013 at 10:18 AM, Pierre-Marie Camilleri < > [email protected]> wrote:**** > > Hi everyone**** > > **** > > Had to shut down our additional domain controller due to maintenance work > this afternoon and a few minutes later users complained that they were > unable to browse the Web and also certain files from our file server. **** > > I cannot understand why this should have happened. Any idea why this > happened?**** > > **** > > Thanks**** > > Pierre**** > > **** > > **** > > **** > > ** ** >
