Can't resolve www.servergraph.org
Barry Margolin
barmar at alum.mit.edu
Fri Sep 14 01:15:10 UTC 2007
In article <fccdie$pta$1 at sf1.isc.org>,
"Ryan McCain" <Ryan.McCain at dss.state.la.us> wrote:
> When I ran a DNS report from dnsstuff on that domain I got the following:
>
> WARNING. The parent servers (I checked with tld2.ultradns.net.) are not
> providing glue for all your nameservers. This means that they are supplying
> the NS records (host.example.com), but not supplying the A records
> (192.0.2.53), which can cause slightly slower connections, and may cause
> incompatibilities with some non-RFC-compliant programs. This is perfectly
> acceptable behavior per the RFCs. This will usually occur if your DNS servers
> are not in the same TLD as your domain (for example, a DNS server of
> "ns1.example.org" for the domain "example.com"). In this case, you can speed
> up the connections slightly by having NS records that are in the same TLD as
> your domain
>
> ..It looks like a glue problem with your parent servers.
No it isn't. The above warning explicitly covers this case, when it
says "This will usually occur if your DNS servers are not in the same
TLD as your domain." His domain is in .ORG, the nameservers are in
..COM, so there aren't supposed to be any glue records.
>
>
> >>> On Thu, Sep 13, 2007 at 3:25 PM, in message
> <512b88dd90e42d893cabb9524e8d054d at cornell.edu>, John Wobus
> <jw354 at cornell.edu>
> wrote:
> > Hello,
> >
> > Our caching DNS (bind9) servers, e.g. bigred.cit.cornell.edu, will not
> > resolve www.servergraph.org. Some other open dns servers (which I
> > shall not name) do not have this problem. You will have my thanks if
> > you can explain what is preventing our bind9 from caching the name.
> > I've appended some dig commands, below.
> >
> > John Wobus
> > Cornell U
> >
> > ==========Our nameserver:
> > > ./named -v
> > BIND 9.3.3rc2
> >
> >
> >
> >
> >
> > ==========Querying the nameserver:
> >
> >
> > $ dig www.servergraph.org
> >
> > ; <<>> DiG 9.3.4 <<>> www.servergraph.org
> > ;; global options: printcmd
> > ;; Got answer:
> > ;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 16816
> > ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
> >
> > ;; QUESTION SECTION:
> > ;www.servergraph.org. IN A
> >
> > ;; Query time: 10 msec
> > ;; SERVER: 128.253.180.2#53(128.253.180.2)
> > ;; WHEN: Thu Sep 13 16:12:52 2007
> > ;; MSG SIZE rcvd: 37
> >
> >
> >
> > ==========Misc dig commands to inspect the delegation:
> >
> >
> > $ dig +trace www.servergraph.org
> >
> > ; <<>> DiG 9.3.4 <<>> +trace www.servergraph.org
> > ;; global options: printcmd
> > . 332266 IN NS D.ROOT-SERVERS.NET.
> > . 332266 IN NS E.ROOT-SERVERS.NET.
> > . 332266 IN NS F.ROOT-SERVERS.NET.
> > . 332266 IN NS G.ROOT-SERVERS.NET.
> > . 332266 IN NS H.ROOT-SERVERS.NET.
> > . 332266 IN NS I.ROOT-SERVERS.NET.
> > . 332266 IN NS J.ROOT-SERVERS.NET.
> > . 332266 IN NS K.ROOT-SERVERS.NET.
> > . 332266 IN NS L.ROOT-SERVERS.NET.
> > . 332266 IN NS M.ROOT-SERVERS.NET.
> > . 332266 IN NS A.ROOT-SERVERS.NET.
> > . 332266 IN NS B.ROOT-SERVERS.NET.
> > . 332266 IN NS C.ROOT-SERVERS.NET.
> > ;; Received 436 bytes from 128.253.180.2#53(128.253.180.2) in 19 ms
> >
> > org. 172800 IN NS TLD4.ULTRADNS.org.
> > org. 172800 IN NS TLD5.ULTRADNS.INFO.
> > org. 172800 IN NS TLD6.ULTRADNS.CO.UK.
> > org. 172800 IN NS TLD1.ULTRADNS.NET.
> > org. 172800 IN NS TLD2.ULTRADNS.NET.
> > org. 172800 IN NS TLD3.ULTRADNS.org.
> > ;; Received 351 bytes from 128.8.10.90#53(D.ROOT-SERVERS.NET) in 23 ms
> >
> > servergraph.org. 86400 IN NS
> > dns02.rocketsoftware.com.
> > servergraph.org. 86400 IN NS
> > dns01.rocketsoftware.com.
> > ;; Received 95 bytes from 192.100.59.11#53(TLD5.ULTRADNS.INFO) in 17 ms
> >
> > dig: couldn't get address for 'dns02.rocketsoftware.com': not found
> >
> >
> >
> >
> > $ dig dns02.rocketsoftware.com
> >
> > ; <<>> DiG 9.3.4 <<>> dns02.rocketsoftware.com
> > ;; global options: printcmd
> > ;; Got answer:
> > ;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 32499
> > ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
> >
> > ;; QUESTION SECTION:
> > ;dns02.rocketsoftware.com. IN A
> >
> > ;; Query time: 10 msec
> > ;; SERVER: 128.253.180.2#53(128.253.180.2)
> > ;; WHEN: Thu Sep 13 16:13:29 2007
> > ;; MSG SIZE rcvd: 42
> >
> >
> >
> >
> >
> > $ dig +trace dns02.rocketsoftware.com
> >
> > ; <<>> DiG 9.3.4 <<>> +trace dns02.rocketsoftware.com
> > ;; global options: printcmd
> > . 332232 IN NS H.ROOT-SERVERS.NET.
> > . 332232 IN NS I.ROOT-SERVERS.NET.
> > . 332232 IN NS J.ROOT-SERVERS.NET.
> > . 332232 IN NS K.ROOT-SERVERS.NET.
> > . 332232 IN NS L.ROOT-SERVERS.NET.
> > . 332232 IN NS M.ROOT-SERVERS.NET.
> > . 332232 IN NS A.ROOT-SERVERS.NET.
> > . 332232 IN NS B.ROOT-SERVERS.NET.
> > . 332232 IN NS C.ROOT-SERVERS.NET.
> > . 332232 IN NS D.ROOT-SERVERS.NET.
> > . 332232 IN NS E.ROOT-SERVERS.NET.
> > . 332232 IN NS F.ROOT-SERVERS.NET.
> > . 332232 IN NS G.ROOT-SERVERS.NET.
> > ;; Received 436 bytes from 128.253.180.2#53(128.253.180.2) in 17 ms
> >
> > com. 172800 IN NS a.gtld-servers.net.
> > com. 172800 IN NS b.gtld-servers.net.
> > com. 172800 IN NS c.gtld-servers.net.
> > com. 172800 IN NS d.gtld-servers.net.
> > com. 172800 IN NS e.gtld-servers.net.
> > com. 172800 IN NS f.gtld-servers.net.
> > com. 172800 IN NS g.gtld-servers.net.
> > com. 172800 IN NS h.gtld-servers.net.
> > com. 172800 IN NS i.gtld-servers.net.
> > com. 172800 IN NS j.gtld-servers.net.
> > com. 172800 IN NS k.gtld-servers.net.
> > com. 172800 IN NS l.gtld-servers.net.
> > com. 172800 IN NS m.gtld-servers.net.
> > ;; Received 502 bytes from 128.63.2.53#53(H.ROOT-SERVERS.NET) in 75 ms
> >
> > dns02.rocketsoftware.com. 172800 IN A 137.134.240.10
> > rocketsoftware.com. 172800 IN NS
> > dns01.rocketsoftware.com.
> > rocketsoftware.com. 172800 IN NS
> > dns02.rocketsoftware.com.
> > ;; Received 124 bytes from 192.26.92.30#53(c.gtld-servers.net) in 22 ms
> >
> >
> >
> >
> >
> > $ dig dns02.rocketsoftware.com @137.134.240.10
> >
> > ; <<>> DiG 9.3.4 <<>> dns02.rocketsoftware.com @137.134.240.10
> > ; (1 server found)
> > ;; global options: printcmd
> > ;; Got answer:
> > ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 48735
> > ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 2, ADDITIONAL: 2
> >
> > ;; QUESTION SECTION:
> > ;dns02.rocketsoftware.com. IN A
> >
> > ;; ANSWER SECTION:
> > dns02.rocketsoftware.com. 86400 IN CNAME
> > rsdns02.rocketsoftware.com.
> > rsdns02.rocketsoftware.com. 86400 IN A 137.134.240.10
> >
> > ;; AUTHORITY SECTION:
> > rocketsoftware.com. 86400 IN NS
> > rsdns01.rocketsoftware.com.
> > rocketsoftware.com. 86400 IN NS
> > rsdns02.rocketsoftware.com.
> >
> > ;; ADDITIONAL SECTION:
> > rsdns01.rocketsoftware.com. 86400 IN A 137.134.224.10
> > rsdns02.rocketsoftware.com. 86400 IN A 137.134.240.10
> >
> > ;; Query time: 38 msec
> > ;; SERVER: 137.134.240.10#53(137.134.240.10)
> > ;; WHEN: Thu Sep 13 16:14:30 2007
> > ;; MSG SIZE rcvd: 148
> >
> >
> >
> > ==========dig command to see if the authoritative data is there for the
> > original name:
> >
> > $ dig +norecurse www.servergraph.org @137.134.240.10
> >
> > ; <<>> DiG 9.3.4 <<>> +norecurse www.servergraph.org @137.134.240.10
> > ; (1 server found)
> > ;; global options: printcmd
> > ;; Got answer:
> > ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 40697
> > ;; flags: qr aa ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2
> >
> > ;; QUESTION SECTION:
> > ;www.servergraph.org. IN A
> >
> > ;; ANSWER SECTION:
> > www.servergraph.org. 300 IN A 137.134.216.11
> >
> > ;; AUTHORITY SECTION:
> > servergraph.org. 300 IN NS
> > rsdns01.rocketsoftware.com.
> > servergraph.org. 300 IN NS
> > rsdns02.rocketsoftware.com.
> >
> > ;; ADDITIONAL SECTION:
> > rsdns01.rocketsoftware.com. 86400 IN A 137.134.224.10
> > rsdns02.rocketsoftware.com. 86400 IN A 137.134.240.10
> >
> > ;; Query time: 38 msec
> > ;; SERVER: 137.134.240.10#53(137.134.240.10)
> > ;; WHEN: Thu Sep 13 16:19:58 2007
> > ;; MSG SIZE rcvd: 147
--
Barry Margolin, barmar at alum.mit.edu
Arlington, MA
*** PLEASE post questions in newsgroups, not directly to me ***
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