Hello @Steph Luke
I ould recommend to re-register this computers in the DNS system. From an elevated command prompt run:
ipconfig /flushdns
ipconfig /registerdns
This will refresh the connection of this machine into the DNS system of your domain.
Other details about the Ipconfig command usage: https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/ipconfig
Hope this helps with your query,
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