Secondary DNS question...

Frank Bulk frnkblk at
Sun Jun 23 01:55:59 UTC 2013 has two NSes listed, []
and [].  But the first one does not seem
to want to respond ( and and are just a few examples) to a few of
the online checkers.  I checked with some others and it looks like you have
no SOA set for for

C:\>dig SOA

; <<>> DiG 9.8.0-P1 <<>> SOA
;; global options: +cmd
;; connection timed out; no servers could be reached


Though the second one has one:
C:\>dig SOA

; <<>> DiG 9.8.0-P1 <<>> SOA
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 7010
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2
;; WARNING: recursion requested but not available

;               IN      SOA

;; ANSWER SECTION:        86400   IN      SOA 2008  3600

;; AUTHORITY SECTION:        86400   IN      NS        86400   IN      NS

;; ADDITIONAL SECTION:    86400   IN      A    86400   IN      A

;; Query time: 74 msec
;; WHEN: Sat Jun 22 20:51:12 2013
;; MSG SIZE  rcvd: 157

And confirmed here:


-----Original Message-----
From: at
[ at] On Behalf Of SH
Sent: Thursday, June 20, 2013 10:03 PM
To: bind-users at
Subject: Secondary DNS question...

Our secondary DNS machine went down (and unnoticed for 24 hours).

Today, we had multiple people calling about email that hadn't come in, and
trouble with outgoing emails not going out.

Our primary DNS was up the whole time.  So my question is, why would my
secondary being down, and only my primary being up cause so many problems?
I thought the whole idea behind having two DNS servers on different networks
was to never have a failure like this.

My understanding was that when DNS is queried, the one that responds fastest
is the information that is used.  If the secondary is down, then the primary
would by default always be fastest (and only).

I think I reasonably understand basic DNS and the setup, but this has me
thinking that something isn't set up right.

Can anyone shed any light on what might have happened here?  Could my
primary not be responding as it should?  All the tests I have run on it show
that it is responding normally.

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