Problema para configurar corretamente o samba4 como DC

Olá pessoal, estou tentando configurar o samba4 no ubuntu 14.04 e estou enfrentado alguns problemas o qual não sei como resolver.

Kerberos Teste:
root@srv-01:/usr/local/samba/bin# kinit [email protected]
kinit: Cannot contact any KDC for realm 'CCBSUMARE.LOCAL' while getting initial credentials

O outro problema é com DNS Backend: BIND9_DLZ pois estou usando esta opção e não SAMBA_INTERNAL, e em todos tutoriais que encontrei tenho que fazer esta configuração abaixo.

sudo nano /etc/bind/named.conf
include "/usr/local/samba/private/named.conf";

sudo nano /usr/local/samba/private/named.conf
dlz "AD DNS Zone" {
# For BIND 9.8.0
# database "dlopen /usr/local/samba/bind9/dlz_bind9.so";

# For BIND 9.9.0
database "dlopen /usr/local/samba/bind9/dlz_bind9_9.so";
};

Mas quando restarto o bind9 da erro justamente devido o comentario acima.

root@srv-01:/usr/local/samba/bin# tail -f /var/log/syslog
Jan 3 11:34:34 srv-01 named[5202]: listening on IPv4 interface eth0, 192.168.0.3#53
Jan 3 11:34:35 srv-01 named[5202]: generating session key for dynamic DNS
Jan 3 11:34:35 srv-01 named[5202]: sizing zone task pool based on 6 zones
Jan 3 11:34:35 srv-01 named[5202]: Loading 'AD DNS Zone' using driver dlopen
Jan 3 11:34:35 srv-01 named[5202]: samba_dlz: Failed to connect to /var/lib/samba/private/dns/sam.ldb
Jan 3 11:34:35 srv-01 named[5202]: dlz_dlopen of 'AD DNS Zone' failed
Jan 3 11:34:35 srv-01 named[5202]: SDLZ driver failed to load.
Jan 3 11:34:35 srv-01 named[5202]: DLZ driver failed to load.
Jan 3 11:34:35 srv-01 named[5202]: loading configuration: failure
Jan 3 11:34:35 srv-01 named[5202]: exiting (due to fatal error)

Este aquivo tem esta permissão
root@srv-01:/usr/local/samba/bin# ls -la /usr/local/samba/private/dns/sam.ldb
-rw-rw---- 1 root bind 3014656 Jan 2 00:11 /usr/local/samba/private/dns/sam.ldb

Verificando o arquivo sam.ldb seu conteúdo trata do próprio dominio do AD CCBSUMARE.

TDB file
^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@m^Y^A&^P'^@^@^@^@^@^@^@^@^@^@^@^@^@^@^M�}� ��:^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@$
^@^@^@uSNCreated^@
^@^@^@uSNChanged^@^Q^@^@^@userPrincipalName^@^R^@^@^@userAccountControl^@^G^@^@^@uNCName^@ ^@^@^@uidNumber^@^L^@^@^@trustPartner^@^M^@^@^@timeVolChange^@^N^@^@^@terminalServer^@^B^@^@^@sn^@
^@^@^@sIDHistory^@^V^@^@^@showInAdvancedViewOnly^@^T^@^@^@servicePrincipalName^@^P^@^@^@serviceClassName^@^N^@^@^@sAMAccountType^@^N^@^@^@sAMAccountName^@^S^@^@^@rpcNsTransferSyntax^@^M^@^@^@rpcNsObjectID$
^@^@^@objectGUID^@^K^@^@^@objectClass^@^N^@^@^@objectCategory^@^K^@^@^@netbootGUID^@^K^@^@^@nETBIOSName^@^N^@^@^@msTSProperty02^@^N^@^@^@msTSProperty01^@^O^@^@^@msTSManagingLS4^@^O^@^@^@msTSManagingLS3^@^$
^@^@^@fromServer^@^H^@^@^@flatName^@^O^@^@^@fileExtPriority^@^D^@^@^@mail^@^M^@^@^@dNSTombstoned^@^G^@^@^@dnsRoot^@^K^@^@^@displayName^@^H^@^@^@dhcpType^@^B^@^@^@cn^@
^@^@^@cOMClassID^@^M^@^@^@birthLocation^@^U^@^@^@altSecurityIdentities^@@IDXONE^@^A^@^@^@^A^@^@^@1^@@IDXVERSION^@^A^@^@^@^A^@^@^@2^@BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB$
^@^@^@unicodePwd^@^L^@^@^@ntPwdHistory^@^L^@^@^@lmPwdHistory^@^W^@^@^@supplementalCredentials^@
^@^@^@priorValue^@^L^@^@^@currentValue^@^Q^@^@^@trustAuthOutgoing^@^Q^@^@^@trustAuthIncoming^@^S^@^@^@initialAuthOutgoing^@^S^@^@^@initialAuthIncoming^@^G^@^@^@pekList^@^Z^@^@^@msDS-ExecuteScriptPassword^$
^@^@^@@INDEXLIST^@^H^@^@^@@OPTIONS^@partition^@^E^@^@^@9^@^@^@DC=CCBSUMARE,DC=LOCAL:sam.ldb.d/DC=CCBSUMARE,DC=LOCAL.ldb^@[^@^@^@CN=CONFIGURATION,DC=CCBSUMARE,DC=LOCAL:sam.ldb.d/CN=CONFIGURATION,DC=CCBSUMA$
^@^@^@@ROOTDSE^@configurationNamingContext^@^A^@^@^@&^@^@^@CN=Configuration,DC=ccbsumare,DC=local^@defaultNamingContext^@^A^@^@^@^U^@^@^@DC=ccbsumare,DC=local^@dsServiceName^@^A^@^@^@p^@^@^@CN=NTDS Settin$
^@^@^@samba_dsdb^@BBBBBBBBBBBBBB`^@^@^@��^@^@H�,^@^@^@^@^@^@^@^@^@^@^@^@^@f��BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB$

Ainda assim instalei Instalei RSAT no Windows 7 prof. para gerenciar o AD. e apesar dos erros acima o Samba4 esta funcionando + ou -, pois consigo subir o AD e introduzir uma maquina Windows 7 prof, criar usuarios, grupo e OU.

Mas creio que para deixa-lo funcional teria que resolver este dois problemas que reportei e por isso preciso muito da ajuda do pessoal que já tem ele funcionando corretamente.

Abraço