Reverse lookups failing

Davenport, Steve M SDavenpo at mc.utmck.edu
Tue Nov 18 01:19:56 UTC 2008


Hello,
 
I am having issues with reverse lookups failing and can not find the cause. Running bind 9.3.5-P1 and 9.3.6rc1.
On an external server dig gives:
 
$ dig @harley.mc.utmck.edu -x 165.6.6.27
; <<>> DiG 9.5.0-P1 <<>> @harley.mc.utmck.edu -x 165.6.6.27
; (1 server found)
;; global options:  printcmd
;; connection timed out; no servers could be reached

 
Internally the same query is fine:
$ dig @harley.mc.utmck.edu -x 165.6.6.27
; <<>> DiG 9.2.4 <<>> @harley.mc.utmck.edu -x 165.6.6.27
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1952
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2
;; QUESTION SECTION:
;27.6.6.165.in-addr.arpa.       IN      PTR
;; ANSWER SECTION:
27.6.6.165.in-addr.arpa. 21600  IN      PTR     ns-2.hosp.utmck.edu.
;; AUTHORITY SECTION:
6.165.in-addr.arpa.     21600   IN      NS      ns-2.hosp.utmck.edu.
6.165.in-addr.arpa.     21600   IN      NS      harley.mc.utmck.edu.
;; ADDITIONAL SECTION:
ns-2.hosp.utmck.edu.    21600   IN      A       165.6.6.27
harley.mc.utmck.edu.    21600   IN      A       165.6.131.32
;; Query time: 18 msec
;; SERVER: 165.6.131.32#53(harley.mc.utmck.edu)
;; WHEN: Mon Nov 17 19:50:49 2008
;; MSG SIZE  rcvd: 144

The config file has "allow query" set on the reverse zone. This was working earlier and I'm told there have been no network changes.
 
Does this appear to be a firewall issue? Is there anything else that might help narrow down the problem?
 
Thanks for your assistance,
Steve

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