[Samba] Clients no longer updating DNS & unable to delete MX records

[Thomas Simmons]

Hello,

After noticing some odd behavior on my domain, I realized that many of my
DNS records are incorrect and that clients are no longer properly updating
DNS. While looking into this, I also discovered that I am unable to delete
MX records via AD DNS Manager or samba-tool. Both tools "see" the record
but report it does not exist when I attempt to delete it. I can create new
MX records, but cannot delete them. I can create and delete both A and
CNAME records. The same behavior occurs under all zones. I can create and
delete new forward lookup zones.

[root at ADC1 log]# samba-tool dns query adc1 internal.testdom.com mailsrv MX
GENSEC backend 'gssapi_spnego' registered
GENSEC backend 'gssapi_krb5' registered
GENSEC backend 'gssapi_krb5_sasl' registered
GENSEC backend 'sasl-DIGEST-MD5' registered
GENSEC backend 'schannel' registered
GENSEC backend 'spnego' registered
GENSEC backend 'ntlmssp' registered
GENSEC backend 'krb5' registered
GENSEC backend 'fake_gssapi_krb5' registered
Using binding ncacn_ip_tcp:adc1[,sign]
  Name=, Records=3, Children=0
    MX: mailsrv.internal.testdom.com. (10) (flags=f0, serial=4, ttl=900)

[root at ADC1 log]# samba-tool dns delete adc1 internal.testdom.com mailsrv MX
'mailsrv.internal.testdom.com 10'
GENSEC backend 'gssapi_spnego' registered
GENSEC backend 'gssapi_krb5' registered
GENSEC backend 'gssapi_krb5_sasl' registered
GENSEC backend 'sasl-DIGEST-MD5' registered
GENSEC backend 'schannel' registered
GENSEC backend 'spnego' registered
GENSEC backend 'ntlmssp' registered
GENSEC backend 'krb5' registered
GENSEC backend 'fake_gssapi_krb5' registered
Using binding ncacn_ip_tcp:adc1[,sign]
ERROR(runtime): uncaught exception - (9701,
'WERR_DNS_ERROR_RECORD_DOES_NOT_EXIST')
  File
"/usr/local/samba/lib/python2.6/site-packages/samba/netcmd/__init__.py",
line 175, in _run
    return self.run(*args, **kwargs)
  File "/usr/local/samba/lib/python2.6/site-packages/samba/netcmd/dns.py",
line 1169, in run
    del_rec_buf)