Can't resolve www.servergraph.org
John Wobus
jw354 at cornell.edu
Thu Sep 13 20:25:19 UTC 2007
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
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