DIG - Connection Timeout for one ISP

[Craig Hoskin]

Hi everyone

Ive seen various postings on this, but cant seem to find anything possibly
related to my problem.

Im running a Linux BOx (Redhat) as a NameServer running BIND (9.2.1-16).  It
hosts the DNS and Mail for various virtual domains I host.  All has (it
appears atleast :-) ) been running OK for a few years now ... and from most
accounts still is.  Ive got one site which has problems with "one ISP" being
unable to reliably connect 100% of the time.  It appears to be a name
resolution problem (eg traceroute via IP and name suggest this).

My Linux box is running IPChains, but is open for port 53 (TCP/UDP)

When I do a DIG @ the ISP's name server, I get regular timeouts.  When I use
their stated secondary, timeouts never occur.  EG.

[craig at ns1 craig]$ dig @ns1.argonaut.com.au investorIQ.com.au
; <<>> DiG 9.2.1 <<>> @ns1.argonaut.com.au investorIQ.com.au
;; global options:  printcmd
;; connection timed out; no servers could be reached

whilst

[root at ns1 virtual]# dig @ns1.webace.com.au ANY investorIQ.com.au

; <<>> DiG 9.2.1 <<>> @ns1.webace.com.au ANY investorIQ.com.au
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 61513
;; flags: qr rd ra; QUERY: 1, ANSWER: 6, AUTHORITY: 2, ADDITIONAL: 3

;; QUESTION SECTION:
;investorIQ.com.au.             IN      ANY

;; ANSWER SECTION:
investorIQ.com.au.      34223   IN      MX      10 ns1.infobahn.co.nz.
investorIQ.com.au.      34223   IN      MX      5 mail.investorIQ.com.au.
investorIQ.com.au.      34223   IN      A       219.88.230.9
investorIQ.com.au.      34223   IN      NS      ns1.infobahn.co.nz.
investorIQ.com.au.      34223   IN      NS      ns2.infobahn.co.nz.
investorIQ.com.au.      34223   IN      SOA     ns1.infobahn.co.nz.
hostmaster.infobahn.co.nz. 2004040416 14400 3600 604800 86400

;; AUTHORITY SECTION:
investorIQ.com.au.      34223   IN      NS      ns1.infobahn.co.nz.
investorIQ.com.au.      34223   IN      NS      ns2.infobahn.co.nz.

;; ADDITIONAL SECTION:
ns1.infobahn.co.nz.     5450    IN      A       219.88.230.7
mail.investorIQ.com.au. 34223   IN      A       203.59.8.105
ns2.infobahn.co.nz.     5456    IN      A       219.88.230.8

;; Query time: 88 msec
;; SERVER: 203.17.62.246#53(ns1.webace.com.au)
;; WHEN: Wed Jun  9 09:48:38 2004
;; MSG SIZE  rcvd: 261