DNS 4 NOTIMP vs 8 NXRRSET
Both DNS 4 (NOTIMP) and 8 (NXRRSET) belong to the DNS Response Codes (RCODEs) category. 4 indicates that not Implemented. The name server does not support the requested query type or operation. Meanwhile, 8 means that rR Set that should exist does not. A required resource record set is missing from the zone.
Beschreibung
Not Implemented. The name server does not support the requested query type or operation.
Wann Sie es sehen
You sent a query type (e.g., IXFR, dynamic update) that the server does not support or has disabled.
Wie man es behebt
Verify the server supports the query type you are using. If you need zone transfers or dynamic updates, enable them in the server configuration.
Beschreibung
RR Set that should exist does not. A required resource record set is missing from the zone.
Wann Sie es sehen
A DNS UPDATE prerequisite expected a certain RRset to exist (e.g., an MX record), but the zone does not contain it.
Wie man es behebt
Create the missing RRset in the zone before retrying the update, or change the prerequisite to not require its existence.
Wesentliche Unterschiede
DNS 4: Not Implemented. The name server does not support the requested query type or operation.
DNS 8: RR Set that should exist does not. A required resource record set is missing from the zone.
You encounter 4 when you sent a query type (e.g., IXFR, dynamic update) that the server does not support or has disabled.
You encounter 8 when a DNS UPDATE prerequisite expected a certain RRset to exist (e.g., an MX record), but the zone does not contain it.
Wann welchen verwenden
For 4 (NOTIMP): Verify the server supports the query type you are using. If you need zone transfers or dynamic updates, enable them in the server configuration. For 8 (NXRRSET): Create the missing RRset in the zone before retrying the update, or change the prerequisite to not require its existence.