Having issue adding a secondary domain to my network

Question

Hi, I'm actually working in my Home lab where I have a server / client environment set up with a server configured as DC and DHCP , my current domain is aku-sys.local, I'm trying to add another domain from a separate DC "informatik-lab.local" on the same switch but I'm getting error messages, in both of my forward lookup zones, I will attach images for you guys to understand clearly, let know what I'm doing wrong in the process, thank you in advance.

Answer 1

Hello ,

Thank you for posting in Microsoft Community forum.
Based on your description, here are some of the reasons that might cause you to encounter an error along with the solutions:

1. Make sure that each domain's DNS servers are configured with the correct forwarders to be able to resolve each other's domain names.
   Make sure you have the correct records in the forward lookup area for each DC.
2. Use the ping command to test the connectivity between the two DCs.
   Make sure there are no firewalls or network policies blocking communication between them.
3. If you want two domains to be able to communicate with each other, you may need to establish a trust relationship. You can set up trust relationships in Active Directory Domains and Trusts.
4. Make sure that there are no conflicting names between the two domains. Although they are in different networks, if they have the same name, it can cause problems.
5. Review the logs in Event Viewer on each domain controller, specifically the Directory Services and DNS Server logs. These logs may provide more details about the issue.
6. Sometimes, restarting DNS and Active Directory-related services can resolve the issue. Try restarting these services and see if that resolves the issue.

If you can provide more context or specific error messages, I can give you more detailed suggestions. Hopefully, these suggestions will help you solve the problem!

I hope the information above is helpful.
If you have any questions or concerns, please feel free to let us know.

Regards,
Jill Zhou

Answer 2

Hi

Thank you for you reply, I am able to ping between the DCs, wih IPs and hostnames. but I havent set a trust between them.

Answer 3

First of all, I'm very sorry that I missed your reply.

Thank you for your feedback.

Since the two domain controllers can ping the IP and host name, the network connection is normal. Next, you need to set up the trust relationship. The specific steps are as follows:

1. Check DNS settings

Make sure that the DNS server of each domain can resolve the domain name of the other party. Add forwarders or necessary A records on the DNS server.

2. Set up the trust relationship

Open the Active Directory Domains and Trusts tool. Right-click your domain (such as aku-sys.local), select "Properties" -> "Trusts" -> "New Trust". Follow the wizard to complete the setup, select Two-way trust or One-way trust, and enter the credentials of the target domain administrator.

3. Validate the trust

In "Trusts", click "Validate" to verify whether the trust is successful.

If you encounter specific problems or error messages during the setup process, please let me know and I will help you further!