[Samba] Samba4 internal DNS not responding to DNS requests

Lee Allen lee at leecallen.com
Wed Jan 9 07:32:22 MST 2013

I am not able to get the Samba4 internal DNS server to respond to DNS
requests on the network.

I am running Samba4 4.1.0pre1-GIT-c1fb37d on my CentOS 6.3 system.  I
followed the instructions here:

I configured Samba4 to use the internal DNS server.  My Samba4 server is Its full hostname is ubuntu-ad.allenlan.net.  The realm is

The DNS testing section of the document passes:

$host -t SRV _ldap._tcp.allenlan.net.
    _ldap._tcp.allenlan.net has SRV record 0 100 389 ubuntu-ad.allenlan.net.
$host -t SRV _kerberos._udp.allenlan.net.
    _kerberos._udp.allenlan.net has SRV record 0 100 88
$host -t A ubuntu-ad.allenlan.net.
    ubuntu-ad.allenlan.net has address

I configured my Windows XP system with a DNS of (Samba4
When I perform the Windows command "nslookup ubuntu-ad.allenlan.net" (or
any variation of that) it reports:
    DNS request timed out.
        timeout was 2 seconds.
    *** Can't find server name for address Timed out
    (above 3 messages repeat again)
    Default servers are not available
    Server: UnKnown

The Windows system can ping the Samba4 server by IP address.

Any help would be appreciated!  More configuration information below.

domain allenlan.net

        workgroup = ALLENLAN
        realm = ALLENLAN.NET
        netbios name = UBUNTU-AD
        server role = active directory domain controller
        dns forwarder =
        interfaces =
        bind interfaces only = yes
        log level = 3
        server services = smb, rpc, nbt, wrepl, ldap, cldap, kdc, drepl,
winbind, ntp_signd, kcc, dnsupdate, dns

/etc/hosts:    ubuntu-ad       ubuntu-ad.allenlan.net   localhost localhost.localdomain localhost4
::1         localhost localhost.localdomain localhost6


Thank you.

Lee Allen

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