ROOT Hints fail in DCDIAG

9 Mar 2006 10:17 PM

Surfin' RC

every time i run dcdiag and run test on the dns servers in the forest i

get the following errors
--------------------------------------------------------------------------------------------------------------------------

rror: Root hints list has invalid root hint server: a.root-servers.net.

(198.41.0.4)
                  Error: Root hints list has invalid root hint server:
b.root-servers.net. (192.228.79.201)
                  Error: Root hints list has invalid root hint server:
c.root-servers.net. (192.33.4.12)

DNS server: 128.63.2.53 (h.root-servers.net.)
               1 test failure on this DNS server
               This is not a valid DNS server. PTR record query for the

1.0.0.127.in-addr.arpa. failed on the DNS server 128.63.2.53
               Name resolution is not functional.
_ldap._tcp.klroot.corp. failed on the DNS server 128.63.2.53

--------------------------------------------------------------------------------------------------------------------------

it does this for every root server. if i run nslookup and type in the
dns or IP address of the root server i get a reply back.

is this something i should be worried about? i havent been having any
problems on the LAN, replication, bad event ids, etc.

thoughts??

10 Mar 2006 1:08 AM

Ace Fekay [MVP]

In news:1141942679.802738.188260@v46g2000cwv.googlegroups.com,

Surfin' RC <RichChri***@yahoo.com> stated, which I commented on below:
Show quoteHide quote

> every time i run dcdiag and run test on the dns servers in the forest
> i
>
> get the following errors
> --------------------------------------------------------------------------------------------------------------------------
>
> rror: Root hints list has invalid root hint server:
> a.root-servers.net.
>
> (198.41.0.4)
>                   Error: Root hints list has invalid root hint server:
> b.root-servers.net. (192.228.79.201)
>                   Error: Root hints list has invalid root hint server:
> c.root-servers.net. (192.33.4.12)
>
> DNS server: 128.63.2.53 (h.root-servers.net.)
>                1 test failure on this DNS server
>                This is not a valid DNS server. PTR record query for
> the
>
> 1.0.0.127.in-addr.arpa. failed on the DNS server 128.63.2.53
>                Name resolution is not functional.
> _ldap._tcp.klroot.corp. failed on the DNS server 128.63.2.53
>
>
> --------------------------------------------------------------------------------------------------------------------------
>
>
>
> it does this for every root server. if i run nslookup and type in the
> dns or IP address of the root server i get a reply back.
>
>
> is this something i should be worried about? i havent been having any
> problems on the LAN, replication, bad event ids, etc.
>
>
> thoughts??

THis may be because it cannot contact the Root servers. Can you describe
your infrastructure, such as internet access, firewalls, proxy, ISA, what
event log errors are showing up, etc etc etc.

--
Ace

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Ace Fekay, MCSE 2003 & 2000, MCSA 2003 & 2000, MCSE+I, MCT, MVP
Microsoft MVP - Directory Services
Microsoft Certified Trainer

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