Domain Controller DNS issues

we have windows 2008 r2 domain controllers , using infoblox appliances administer dhcp , dns. problem i'm having event id 5774 keeps popping on domain controllers , i'm trying find possible solutions.

log name:      system
source:        netlogon
date:          3/26/2013 7:29:52 am
event id:      5774
task category: none
level:         error
keywords:      classic
user:          n/a
computer:      dom-main1.dom.gov
description:
dynamic registration of dns record '_ldap._tcp.medicaid._sites.domaindnszones.dom.gov. 600 in srv 0 100 389 dom-main1.dom.gov.' failed on following dns server:  

dns server ip address: 10.13.10.109 
returned response code (rcode): 0 
returned status code: 9502  

computers , users locate domain controller, record must registered in dns.  

user action  
determine might have caused failure, resolve problem, , initiate registration of dns records domain controller. determine might have caused failure, run dcdiag.exe. learn more dcdiag.exe, see , support center. initiate registration of dns records domain  controller, run 'nltest.exe /dsregdns' command prompt on domain controller or restart net logon service. 
  or, can manually add record dns, not recommended.  

additional data 
error value: bad dns packet.
event xml:
<event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <system>
    <provider name="netlogon" />
    <eventid qualifiers="0">5774</eventid>
    <level>2</level>
    <task>0</task>
    <keywords>0x80000000000000</keywords>
    <timecreated systemtime="2013-03-26t12:29:52.000000000z" />
    <eventrecordid>626713</eventrecordid>
    <channel>system</channel>
    <computer>dom-main1.dom.gov</computer>
    <security />
  </system>
  <eventdata>
    <data>_ldap._tcp.medicaid._sites.domaindnszones.dom.gov. 600 in srv 0 100 389 dom-main1.dom.gov.</data>
    <data>%%9502</data>
    <data>10.13.10.109</data>
    <data>0</data>
    <data>9502</data>
    <binary>0000</binary>
  </eventdata>
</event>

i receive dns errors on our file cluster well. event id 1579 , states this:

cluster network name resource 'cluster name' failed update dns record name 'domfsprd-c1r2.dom.gov' on adapter 'local area connection'. error code 'dns server failure. (9002)'. ensure dns server accessible cluster node , contact dns server administrator verify cluster identity can update dns record 'domfsprd-c1r2.dom.gov'.

hello dom,
suggest check if domain controllers, member servers and clients have rights register records in external dns server (infoblox appliances); if dns zones (forward and optionally reverse) needed active directory, present external server.

i suggest read these technet library articles: 

• setting dns active directory - general information
• verifying basic dns configuration - "if use third-party dns server support active directory, must perform configuration tasks manually, , doing so, might cause common configuration errors prevent dns , active directory working properly. following sections describe tests can perform verify dns server working properly, forward , reverse lookup zones configured, , dns can support active directory. ..."

bye,
luca

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