netdiag -v kullanarak dc lerde netdiag.log larını çıktısını aldım ve Root DC de sorun vermedi.A.DC de verdiği sorun ise ilginçti.

Failed to query SPN registration on DC 'adc1.domain.local'

IP Address: Expected registration with PDN (primary DNS domain name):
Hostname: adc1.domain.local.
[WARNING] Cannot find a primary authoritative DNS server for the name
'adc1.domain.local.'. [ERROR_TIMEOUT]
The name 'adc1.domain.local' may not be registered in DNS.
Check the DNS registration for DCs entries on DNS server '10.10.5.1'
The Record is different on DNS server '10.10.5.1'.
DNS server has more than one entries for this name, usually this means there are multiple DCs for this domain.
Your DC entry is one of them on DNS server '10.10.5.1', no need to re-register.

bütün DNS kayıtlarında da bunu veriyor neredeyse;

The Record is different on DNS server '10.10.5.1'.
DNS server has more than one entries for this name, usually this means there are multiple DCs for this domain.
Your DC entry is one of them on DNS server '10.10.5.1', no need to re-register.