[Samba] Undestructible DNS entry

mathias dufresne infractory at gmail.com
Wed Dec 2 16:25:12 UTC 2015

Hi all,

I'm unable to delete a DNS entry, this entry does not exist.

The entry is A record in _msdcs zone for an old DC which was demoted.

I tried to use samba-tool dns to delete it but without success:
samba-tool dns delete m703 _msdcs.ad.domain.tld \
  m701._msdcs.ad.domain.tld A -k yes
ERROR: Record does not exist

I found undeleted entry in LDAP, removed it without success:
the entry:
objectclass=* | grep 701
name: m701
dc: m701
distinguishedName: DC=m701,DC=ad.domain.tld,CN=MicrosoftDNS,DC=Dom

Of course I can't delete this entry from RSAT DNS tool, the error is:
The record cannot be deleted.
The record does not exist.

The question is simple: how to get rid of that entry?
If I was gambler I would bet on some data, possibly base64 encrypted,
remaining on some other LDAP entry. I mostly lose my bets.

Thank you for your time, best regards,


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