DNS name does not exist

asked 2017-01-12 09:21:35 +0000

Hi, we have Fedora 22 servers set up, no Windows servers, and Windows 10 clients attaching to them. The servers handle all network configuration and authentication, and until recently all new PCs were able to successfully be added to this Linux domain. Then suddenly, they don't. To the best of my knowledge, nothing was changed. But obviously something has. On the WIndows PCs I now receive the following error message.

Note: This information is intended for a network administrator. If you are not your network's administrator, notify the administrator that you have received this information, which has been recorded in the file C:\Windows\debug\dcdiag.txt.

The following error occurred when DNS was queried for the service location (SRV) resource record used to locate an Active Directory Domain Controller (AD DC) for domain "domain-name.com":

The error was: "DNS name does not exist." (error code 0x0000232B RCODENAMEERROR)

The query was for the SRV record for ldap.tcp.dc._msdcs.domain-name.com

Common causes of this error include the following:

  • The DNS SRV records required to locate an AD DC for the domain are not registered in DNS. These records are registered with a DNS server automatically when an AD DC is added to a domain. They are updated by the AD DC at set intervals. This computer is configured to use DNS servers with the following IP addresses:

172.23.146.155

  • One or more of the following zones do not include delegation to its child zone:

domain-name.com . (the root zone)

I am not a Linux expert, but this has fallen on me for a number of reasons, so please forgive me if this is something simple and straightforward. After hours of googling, common culprits are:

  • DNS. The client isn't finding the DNS server. In our case, it is. I have even added the DNS server details manually
  • IPv6. This was already switched off, but I enabled and disabled again just to be sure

The clients can ping other hosts on the network (address and name), and browse the files and folders. When asked for network credentials, these are happily accepted.

Any help will be gratefully accepted

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Comments

Welcome to ask.fedora. That's an interesting question you pose. I don't know the answer, yet, but maybe I can help by getting some more information. First, are all of your machines on the same LAN? I ask because the DNS address you give is non-routable and can't be reached across the Internet. Second, can your older workstations still reach those machines?

sideburns ( 2017-01-13 00:57:39 +0000 )edit