DNS 5 REFUSED vs 17 BADKEY
Both DNS 5 (REFUSED) and 17 (BADKEY) belong to the DNS Response Codes (RCODEs) category. 5 indicates that query refused. The name server refuses to perform the requested operation for policy reasons. Meanwhile, 17 means that key not recognized. The TSIG key name in the message is not configured on the server.
Описание
Query refused. The name server refuses to perform the requested operation for policy reasons.
Когда вы это видите
The server rejected your query due to access control — for example, a recursive resolver that only serves its own network, or a zone transfer blocked by ACL.
Как исправить
Check the server's allow-query, allow-recursion, or allow-transfer ACLs. If you are not authorized to use this resolver, switch to a public DNS service.
Описание
Key not recognized. The TSIG key name in the message is not configured on the server.
Когда вы это видите
Your TSIG-signed query or update references a key name that the server does not have in its keyring, so it cannot verify the signature.
Как исправить
Ensure the TSIG key name matches exactly (case-sensitive) on both client and server. Add the missing key to the server's configuration if it is a new key.
Ключевые различия
DNS 5: Query refused. The name server refuses to perform the requested operation for policy reasons.
DNS 17: Key not recognized. The TSIG key name in the message is not configured on the server.
You encounter 5 when the server rejected your query due to access control — for example, a recursive resolver that only serves its own network, or a zone transfer blocked by ACL.
You encounter 17 when your TSIG-signed query or update references a key name that the server does not have in its keyring, so it cannot verify the signature.
Когда что использовать
For 5 (REFUSED): Check the server's allow-query, allow-recursion, or allow-transfer ACLs. If you are not authorized to use this resolver, switch to a public DNS service. For 17 (BADKEY): Ensure the TSIG key name matches exactly (case-sensitive) on both client and server. Add the missing key to the server's configuration if it is a new key.