Problem : test dcdiag fails delegation: missing (glue) record for removed host
A small domain with primary and secondary DC, when I run dcdiag on each of the controllers, I get a delegation failure,
“Warning: DNS server: dc-01.domain.local. IP Failure:Missing glue A record”
The problem is that this server “dc-01” no longer exists, and I can’t find any reference to it in AD or DNS. dcdiag passes all other tests.
Domain Controller Diagnosis Performing initial setup: Done gathering initial info. Doing initial required tests Testing server: Default-First-Site-Name\EWS-DC-01 Starting test: Connectivity ......................... EWS-DC-01 passed test Connectivity Doing primary tests Testing server: Default-First-Site-Name\EWS-DC-01 DNS Tests are running and not hung. Please wait a few minutes... Running partition tests on : ForestDnsZones Running partition tests on : DomainDnsZones Running partition tests on : Schema Running partition tests on : Configuration Running partition tests on : ews Running enterprise tests on : ews.local Starting test: DNS Test results for domain controllers: DC: ews-dc-01.ews.local Domain: ews.local TEST: Delegations (Del) Warning: DNS server: dc-01.ews.local. IP: Failure:Missing glue A record Summary of DNS test results: Auth Basc Forw Del Dyn RReg Ext ________________________________________________________________ Domain: ews.local ews-dc-01 PASS PASS PASS FAIL PASS PASS n/a ......................... ews.local failed test DNS
Solution: test dcdiag fails delegation: missing (glue) record for removed host
There was an _mcds object under ews.local with a sole entry (dc-01.ews.local). Deleting this object fixed the issue. Human oversight again. Thank you for the tips.