DNS 0 NOERROR vs 9 NOTAUTH
Both DNS 0 (NOERROR) and 9 (NOTAUTH) belong to the DNS Response Codes (RCODEs) category. 0 indicates that no error condition. The query completed successfully and the response contains the requested data. Meanwhile, 9 means that server Not Authoritative for zone, or Not Authorized. The server is not authoritative for the zone named in the Zone section.
Descrição
No error condition. The query completed successfully and the response contains the requested data.
Quando você o vê
This is the normal, successful response to any DNS query — the name was resolved and the answer section contains the requested records.
Como corrigir
No fix needed. RCODE 0 means the DNS lookup succeeded as expected.
Descrição
Server Not Authoritative for zone, or Not Authorized. The server is not authoritative for the zone named in the Zone section.
Quando você o vê
You sent a dynamic update or zone operation to a server that is not the authoritative master for that zone, or the server rejected it due to TSIG authentication failure.
Como corrigir
Send the update to the correct primary authoritative server for the zone. If using TSIG, verify the key name and secret match on both client and server.
Diferenças principais
DNS 0: No error condition. The query completed successfully and the response contains the requested data.
DNS 9: Server Not Authoritative for zone, or Not Authorized. The server is not authoritative for the zone named in the Zone section.
You encounter 0 when this is the normal, successful response to any DNS query — the name was resolved and the answer section contains the requested records.
You encounter 9 when you sent a dynamic update or zone operation to a server that is not the authoritative master for that zone, or the server rejected it due to TSIG authentication failure.
Quando usar qual
For 0 (NOERROR): No fix needed. RCODE 0 means the DNS lookup succeeded as expected. For 9 (NOTAUTH): Send the update to the correct primary authoritative server for the zone. If using TSIG, verify the key name and secret match on both client and server.