I have a policy that joins a computer to the domain automatically when it is enrolled. This policy worked up until today and now I am receiving the same error message on all new Macs. I searched the error code and it says that 5103 usually means that the hostname is too long for AD but our hostnames are all 10 characters long... Has anyone run into this issue before? We tested windows machines and they work fine so I am not sure if this issue is from the AD server side or MacOS. Here is the error message.
Thank you to anyone with suggestions