I have four DCs, one of them in personal site. Client in same site could not authenticate in AD because server is not available if I reboot one of DC from other site, for example DC01
On primary DC for this clients (for example DC03), I got error in DNS events
Log Name: DNS Server
Event ID: 4015
Task Category: None
The DNS server has encountered a critical error from the Active Directory. Check that the Active Directory is functioning properly. The extended error debug information (which may be empty) is "". The event data contains the error.
DCDIAG /test:dns /v /e - return that is not errors
Network configuration for DC03 contains other DCs and self address too (not 127.0.0.1 but real IP) as DNS servers.
Client network configuration have all DC`s IP addresses as DNS servers.
What can it be?