I have 4 Domains, 1 Forest Root, 3 children. The children are nearly replicas, and have their machines named the same in all 3 child domains.
DC1.dev.example.com DC2.dev.example.com DC1.test.example.com DC2.test.example.com DC1.prod.example.com DC2.prod.example.com
From what I can tell, the only issue is the SPN duplication on domain join that requires manually fixing.
DC1.dev.example.com HOST/DC1 HOST/DC1.dev.example.com
The shortname is a duplicate, so when I add test, the SPNSET function of the AD Domain join process fails, if I manually enter the fqdn in the computer name (extended attributes, service principle names) all is well.
Can I prevent the shortname from being added to SPN?