strange problem (SERVFAIL), but able to query google's DNS servers

W S whatisee1 at yahoo.com
Wed Feb 10 18:25:28 UTC 2010










Folks - my DNS slaves are flooded with these [req from corp email gateways]:
 
query failed (SERVFAIL) for buildcount.com/IN/NS at query.c:4623
query failed (SERVFAIL) for rss.sina.com.cn/IN/A at query.c:4623
...
 
BUT if I query the very same Domain Names within googles' DNS - it's all good:
dig @8.8.8.8 buildcount.com
buildcount.com.         3600    IN      A       61.136.59.34
 
 
And of course, my systems are NOT able to resolve these and other names 
cause /etc/resolv.conf pointing to my local resolvers, this is just partial list:
 
host treesfresh.net
host rss.sina.com.cn
host twoproperitary.ru
host qq.com
host 53www.com
host exactshy.ru
host heldthem.ru

 
Are these misconfigured Domains - if so - then why Google's DNS able to resolve name, MX etc...and my DNS slaves 
 
 
Thanks a lot,
--Walter Smith

--- On Tue, 2/9/10, W S <whatisee1 at yahoo.com> wrote:


From: W S <whatisee1 at yahoo.com>
Subject: Re: strange problem with "double CNAMEs" ?
To: bind-users at lists.isc.org
Date: Tuesday, February 9, 2010, 4:08 PM







Is there anything I have to enable on my side to query these "double CNAMEs"?
 
dig @8.8.8.8 cdn2.example.com
cdn2.example.com 3600 IN CNAME cdn2.example2.com
cdn2.example2.com 3600 IN CNAME cdn3.example2.com
cdn3.example2.com 3600 IN A 1.2.3.4
 
Thanks a lot guys,
--WS

--- On Mon, 2/8/10, W S <whatisee1 at yahoo.com> wrote:


From: W S <whatisee1 at yahoo.com>
Subject: strange problem
To: bind-users at lists.isc.org
Date: Monday, February 8, 2010, 3:44 PM







Folks,
 
When I try to get an IP address for some sub-site/domain, let's say
cdn2.example.com --- I'm getting errors, BUT when I query
Google's DNS servers I'm getting an IP address:
 
dig @8.8.8.8 cdn2.example.com
cdn2.example.com 3600 IN CNAME cdn2.example2.com
cdn2.example2.com 3600 IN CNAME cdn3.example2.com
cdn3.example2.com 3600 IN A 1.2.3.4
 
This is my DNS configurations/errors:
 
#############################################################
/usr/local/bind/sbin/named -V
BIND 9.6.1-P3 built with '--prefix=/usr/local/bind' '--with-openssl=/usr/local/openssl' '--enable-fixed-rrset' '--disable-ipv6'
#############################################################
08-Feb-2010 15:13:01.479 query-errors: debug 1: client <some_ip_addr>#7074: query failed (SERVFAIL) for cdn2.example.com/IN/A at query.c:4623
08-Feb-2010 15:13:01.479 query-errors: debug 2: fetch completed at resolver.c:3119 for cdn2.example.com/A in 30.000908: timed out/success 
[domain:example.com,referral:1,restart:6,qrysent:13,timeout:9,lame:0,neterr:0,badresp:0,adberr:0,findfail:0,valfail:0]
#############################################################
at query.c:4623
~/bind-9.6.1-P3/bin/named/query.c
 default:
                /*
                 * Something has gone wrong.
                 */
                QUERY_ERROR(DNS_R_SERVFAIL);
                goto cleanup;
        }
#############################################################
at resolver.c:3119
~/bind-9.6.1-P3/lib/dns/resolver.c
  if (event->ev_type == ISC_TIMEREVENT_LIFE) {
                fctx->reason = NULL;
                fctx_done(fctx, ISC_R_TIMEDOUT, __LINE__);
#############################################################
 
 
Thanks,
--WS
 

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