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.
Mô tả
Query refused. The name server refuses to perform the requested operation for policy reasons.
Khi bạn thấy mã này
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.
Cách khắc phục
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.
Mô tả
Key not recognized. The TSIG key name in the message is not configured on the server.
Khi bạn thấy mã này
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.
Cách khắc phục
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.
Sự khác biệt chính
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.
Khi nào dùng cái nào
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.