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What your conditional forwarders looks like...do you have transitive or non-transitive trust in place?
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What your conditional forwarders looks like...do you have transitive or non-transitive trust in place?

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I found out the problem was the ports were blocked. We had to open them up at the firewall. Thanks.
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I found out the problem was the ports were blocked. We had to open them up at the firewall. Thanks.

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We have a domain(Ex:domain.domain1.n<wbr />et) .. We have a trusted domain(trusted.domain.net)<wbr /> that uses the secondary DNS server as a conditional forwarder but cannot do a nslookup to it. They can nslookup to our domain(domain1.net) but not to the child domain(ex:domain.domain1.n<wbr />et).<br />
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I hope that makes sense. Do I need to have them point to the DNS server that holds the primary zone?
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We have a domain(Ex:domain.domain1.net) .. We have a trusted domain(trusted.domain.net) that uses the secondary DNS server as a conditional forwarder but cannot do a nslookup to it. They can nslookup to our domain(domain1.net) but not to the child domain(ex:domain.domain1.net).

I hope that makes sense. Do I need to have them point to the DNS server that holds the primary zone?

DNS zone transfer question

The Microsoft Server topic includes all of the legacy versions of the operating system, including the Windows NT 3.1, NT 3.5, NT 4.0 and Windows 2000 and Windows Home Server versions.

Microsoft Server OS

Windows Server 2008 and Windows Server 2008 R2, based on the Microsoft Vista codebase, is the last 32-bit server operating system released by Microsoft. It has a number of versions, including including Foundation, Standard, Enterprise, Datacenter, Web, HPC Server, Itanium and Storage; new features included server core installation and Hyper-V.

Windows Server 2008

The Domain Name System (DNS) is a hierarchical, globally distributed system responsible for associating the name of a computer, service or other resource into an IP address for connecting to the Internet or a private network. Most prominently, it translates domain names to the numerical IP addresses needed for the purpose of computer services and devices worldwide.

Active Directory (AD) is a Microsoft brand for identity-related capabilities. In the on-premises world, Windows Server AD provides a set of identity capabilities and services, and is hugely popular (88% of Fortune 1000 and 95% of enterprises use AD). This topic includes all things Active Directory including DNS, Group Policy, DFS, troubleshooting, ADFS, and all other topics under the Microsoft AD and identity umbrella.