Mailing List CGatePro@mail.stalker.com Message #101632
From: Brian Gibson <gibson_brian@wheatoncollege.edu>
Subject: help with DNS issue
Date: Mon, 21 Feb 2011 09:29:58 -0500
To: CommuniGate Pro Discussions <CGatePro@mail.stalker.com>
Hi all,

We are having an issue sending a message because of DNS and I am kind of baffled as to why. A message in the queue is destined for the domain dis.dk but I am getting the following message in the queue

Failed to deliver to 'amo@dis.dk'
SMTP module(domain dis.dk) reports:
 dis.dk: DNS server failure

The /etc/resov.conf on the CGPro server looks like this

search wheatonma.edu
nameserver 155.47.64.174
nameserver 155.47.105.40


The 2 DNS servers are our Windows domain controllers. If I query dis.dk against the first I get nothing, if I query dis.dk against the second it does resolve (see dig results below). Any ideas on how to troubleshoot whether this is something wrong with our DNS server or something happening higher up with the recursive queries?


[root@xmail ~]# dig dis.dk @155.47.64.174

; <<>> DiG 9.2.4 <<>> dis.dk @155.47.64.174
; (1 server found)
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 42008
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;dis.dk.                                IN      A

;; Query time: 0 msec
;; SERVER: 155.47.64.174#53(155.47.64.174)
;; WHEN: Mon Feb 21 09:16:40 2011
;; MSG SIZE  rcvd: 24

[root@xmail ~]# dig dis.dk @155.47.105.40

; <<>> DiG 9.2.4 <<>> dis.dk @155.47.105.40
; (1 server found)
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 44900
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;dis.dk.                                IN      A

;; ANSWER SECTION:
dis.dk.                 689     IN      A       74.53.248.36

;; Query time: 0 msec
;; SERVER: 155.47.105.40#53(155.47.105.40)
;; WHEN: Mon Feb 21 09:16:52 2011
;; MSG SIZE  rcvd: 40




-- 



++++++++++++++++++++++++++++
Brian Gibson
Systems Administrator
Wheaton College

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