DNS Resolution Problem

[Wei Chieh LIM]

Hi,

We seem to be seeing a problem with our cache-only servers (BIND 8.2.2-P5)
resolving Internet domain names. On one server (sngona1), we can resolve the
name, however, we get a connection timed out on another server (sngona2).

This appear to occur for different domains with no fixed pattern. Anyone has
experienced this before?

Some nslookup and dig outputs ...

# nslookup
Default Server:  sngona2.cns.hp.com
Address:  15.2.177.10

> ges.com.sg
Server:  sngona2.cns.hp.com
Address:  15.2.177.10

Name:    ges.com.sg
Address:  203.127.111.75

> set q=mx
> ges.com.sg
Server:  sngona2.cns.hp.com
Address:  15.2.177.10

*** sngona2.cns.hp.com can't find ges.com.sg: Non-existent host/domain

# dig @sngona1 mx hclinsys.com

; <<>> DiG 8.2 <<>> @sngona1 mx hclinsys.com
; (1 server found)
;; res options: init recurs defnam dnsrch
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 6
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2
;; QUERY SECTION:
;;      hclinsys.com, type = MX, class = IN

;; ANSWER SECTION:
hclinsys.com.           23h23m23s IN MX  10 ems.hclinsys.com.

;; AUTHORITY SECTION:
hclinsys.com.           1d23h23m17s IN NS  ems.hclinsys.com.
hclinsys.com.           1d23h23m17s IN NS  WWW.hclinsys.com.

;; ADDITIONAL SECTION:
ems.hclinsys.com.       1d23h23m17s IN A  202.54.61.148
WWW.hclinsys.com.       1d23h23m17s IN A  202.54.61.146

;; Total query time: 29 msec
;; FROM: sngrel1.hp.com to SERVER: sngona1  15.66.168.10
;; WHEN: Thu Mar  2 16:56:59 2000
;; MSG SIZE  sent: 30  rcvd: 114


# dig @sngona2 mx hclinsys.com

; <<>> DiG 8.2 <<>> @sngona2 mx hclinsys.com
; (1 server found)
;; res options: init recurs defnam dnsrch
;; res_nsend to server sngona2  15.2.177.10: Connection timed out

Regards,
LIM Wei Chieh