[BlueOnyx:06225] Re: Lame Name Servers
Titus Bolton
titus at antennasystems.com
Mon Jan 3 11:51:33 -05 2011
Per request, I have attached the DNSStuff report.
We are also looking into the zone to make sure that all is configured properly.
Category Status Test Name Information
Parent PASS Missing Direct Parent check OK. Your direct parent zone exists, which is good. Some domains (usually third or fourth level domains, such as example.co.us) do not have a direct parent zone ('co.us' in this example), which is legal but can cause confusion.
INFO NS records at parent servers Your NS records at the parent servers are:
ns1.comsiteconstruction.com. [216.132.149.46] [TTL=172800] [US]
ns2.comsiteconstruction.com. [216.132.149.47] [TTL=172800] [US]
ns3.comsiteconstruction.com. [206.135.249.30] [TTL=172800] [US]
[These were obtained from c.gtld-servers.net]
PASS Parent nameservers have your nameservers listed OK. When someone uses DNS to look up your domain, the first step (if it doesn't already know about your domain) is to go to the parent servers. If you aren't listed there, you can't be found. But you are listed there.
PASS Glue at parent nameservers OK. The parent servers have glue for your nameservers. That means they send out the IP address of your nameservers, as well as their host names.
PASS DNS servers have A records OK. All your DNS servers either have A records at the zone parent servers, or do not need them (if the DNS servers are on other TLDs). A records are required for your hostnames to ensure that other DNS servers can reach your DNS servers. Note that there will be problems if your DNS servers do not have these same A records.
NS INFO NS records at your nameservers Your NS records at your nameservers are:
[None of your nameservers returned your NS records; they could be down or unreachable, or could all be lame nameservers]
PASS Open DNS servers OK. Your DNS servers do not announce that they are open DNS servers. Although there is a slight chance that they really are open DNS servers, this is very unlikely. Open DNS servers increase the chances that of cache poisoning, can degrade performance of your DNS, and can cause your DNS servers to be used in an attack (so it is good that your DNS servers do not appear to be open DNS servers).
PASS Mismatched glue OK. The DNS report did not detect any discrepancies between the glue provided by the parent servers and that provided by your authoritative DNS servers.
PASS No NS A records at nameservers OK. Your nameservers do include corresponding A records when asked for your NS records. This ensures that your DNS servers know the A records corresponding to all your NS records.
WARN All nameservers report identical NS records WARNING: At least one of your nameservers did not return your NS records (it reported 0 answers). This could be because of a referral, if you have a lame nameserver (which would need to be fixed).
216.132.149.46 returns 0 answers (may be a referral)
216.132.149.47 returns 0 answers (may be a referral)
206.135.249.30 returns 0 answers (may be a referral)
PASS All nameservers respond OK. All of your nameservers listed at the parent nameservers responded.
PASS Nameserver name validity OK. All of the NS records that your nameservers report seem valid (no IPs or partial domain names).
PASS Number of nameservers OK. You have 3 nameservers. You must have at least 2 nameservers (RFC2182 section 5 recommends at least 3 nameservers), and preferably no more than 7.
FAIL Lame nameservers ERROR: You have one or more lame nameservers. These are nameservers that do NOT answer authoritatively for your domain. This is bad; for example, these nameservers may never get updated. The following nameservers are lame:
216.132.149.46
216.132.149.47
206.135.249.30
PASS Missing (stealth) nameservers OK. All 0 of your nameservers (as reported by your nameservers) are also listed at the parent servers.
FAIL Missing nameservers 2 ERROR: One or more of the nameservers listed at the parent servers are not listed as NS records at your nameservers. The problem NS records are:
ns1.comsiteconstruction.com.
ns2.comsiteconstruction.com.
ns3.comsiteconstruction.com.
PASS No CNAMEs for domain OK. There are no CNAMEs for comsiteconstruction.com. RFC1912 2.4 and RFC2181 10.3 state that there should be no CNAMEs if an NS (or any other) record is present.
PASS No NSs with CNAMEs OK. There are no CNAMEs for your NS records. RFC1912 2.4 and RFC2181 10.3 state that there should be no CNAMEs if an NS (or any other) record is present.
PASS Nameservers on separate class C's OK. You have nameservers on different Class C (technically, /24) IP ranges. You must have nameservers at geographically and topologically dispersed locations. RFC2182 3.1 goes into more detail about secondary nameserver location.
PASS All NS IPs public OK. All of your NS records appear to use public IPs. If there were any private IPs, they would not be reachable, causing DNS delays.
PASS TCP Allowed OK. All your DNS servers allow TCP connections. Although rarely used, TCP connections are occasionally used instead of UDP connections. When firewalls block the TCP DNS connections, it can cause hard-to-diagnose problems.
INFO Nameservers versions Your nameservers have the following versions:
216.132.149.46: "100.100.100"
216.132.149.47: "100.100.100"
206.135.249.30: "100.100.100"
PASS Stealth NS record leakage Your DNS servers do not leak any stealth NS records (if any) in non-NS requests.
SOA FAIL SOA Record No valid SOA record came back:
is not comsiteconstruction.com.
Kind regards,
Titus Bolton
Antenna Systems & Solutions, Inc.
931 Albion Avenue
Schaumburg, Illinois 60193-4550
United States of America
Phone: +1-847-584-1000 Fax: +1-847-584-9951
http://www.antennasystems.com
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Electronic Counter Measures, Trap and Trace Devices, and accessories.
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On Jan 3, 2011, at 9:37 AM, Chris Gebhardt - VIRTBIZ Internet wrote:
> Titus Bolton wrote:
>> First and foremost, hello all and Snappy Snew Year.
>>
>> Has anyone had any problems with lame name servers on BQ/BO?
>>
>> If anyone has had experience in resolving this type of issue I would
>> love to hear about it. I can provide information needed. One of the
>> domains that we're having issues with is comsiteconstruction.com
>> <http://comsiteconstruction.com>
>>
>> From DNSStuff we're getting these three failures:
>> Lame Nameservers (they don't answer authoritatively for the domain)
>>
>> Missing Nameservers 2
>> ns1.comsiteconstruction.com <http://ns1.comsiteconstruction.com>
>> ns2.comsiteconstruction.com <http://ns2.comsiteconstruction.com>
>> ns3.comsiteconstruction.com <http://ns3.comsiteconstruction.com>
>>
>> SOA Record: No valid SOA came back.
>
> Sounds to me like you don't have the DNS zone set correctly. Make sure
> you have the domain configured in DNS and you have the SOA correctly set
> with the primary and secondary nameserver fields filled out.
> --
> Chris Gebhardt
> VIRTBIZ Internet Services
> Access, Web Hosting, Colocation, Dedicated
> www.virtbiz.com | toll-free (866) 4 VIRTBIZ
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