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Archive for September, 2010

Error: The zone cannot be created. A conditional forwarding zone already exists for that name.

Posted in Active Directory & DNS, System, Windows 2003 on September 28, 2010| Leave a Comment »

Problem:

I tried to create a secondary DNS zone, but I received the following error: The zone cannot be created. A conditional forwarding zone already exists for that name.

Solution

  • Connect to the domain controller.
  • Go to Start > Run > Dnsmgmt.msc
  • Stand on the server’s name > Properties > Forwarders ,and remove the domain controller that you are trying to create the secondary DNS zone.
  • Try to create the zone from the start.

Idit.

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Can’t Resolve a server’s FQDN From a One Domain to Another , Between two Trusted Domains

Posted in Active Directory & DNS, System, Windows 2003 on September 28, 2010| 2 Comments »

Problem:

I have domain DomA.com  and client ServerA.DomA.com , I have additional domain DomB.com . I created a two-way  trust between DomA.com and DomB.com

I am trying to resolve the FQDN of ServerA.DomA.com from DomB.com (from start > run > nslookup > server’s IP)  but I received an error massage: 

*** DomB.com can’t find server’s IP : Non-existent domain

Solution

Configure a DNS replication  Between DomA.com and DomB.com

 By doing the following:

  • Connect to DomA.com
  • Go to Start > Run > Dnsmgmt.msc
  • Go to Forward Lookup Zones > DomA.com > Right Click > Properties > Zone Transfers > check Allow zone transfers > to any server or choose only to the following servers and write the IP of DomB.com

           

  • Connect to DomB.com
  • Go to Start > Run > Dnsmgmt.msc
  • Stand on the server’s name > Properties > Forwarders ,and remove DomA.com from it.

         

  • From the DNS Management go to Reversed Lookup Zones > Right Click > New Zone > Secondary Zone > add “DomA.com”
  • Go to Reversed Lookup Zones > Stand on a zone > Right Click > Properties > Name Servers > add DomA.com

            

  • Go to the relevant reversed lookup zone and manually add RTP record of  ServerA.DomA.com
  • Now if you will go to DomB.com start > run nslookup > and write the IP of ServerA.DomA.com , you won’t be receiving any error massages.

That’s it!  And you are ready to work.

Idit.

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