SERVFAIL

The DNS (glossary)DNS Domain Name System The internet's directory that links domain names to computer addresses. Full definition of DNS answer meaning that the server could not complete the lookup. Common causes are name servers (glossary)name server A server that holds a domain's DNS records and answers lookups. Full definition of name server that do not respond and DNSSEC signatures (glossary)RRSIG Resource Record Signature The DNS record that carries a DNSSEC signature for a set of records. Full definition of RRSIG that fail the check. Unlike NXDOMAIN (glossary)NXDOMAIN Non-Existent Domain The DNS answer meaning the requested name does not exist. Full definition of NXDOMAIN, it does not say the name is missing, only that no trustworthy answer could be obtained.