My dns works when I do a "dig @mynameserver hostname" but not when I do a "dig hostname"

My nameserver isn't working properly, and I can't figure out why.

When I do a 'whois cfconsu开发者_JAVA百科lting.ca', it shows the correct nameservers, with ns1.signupsystems.com being the primary. If you do a "dig @ns1.signupsystems.com cfconsulting.ca" you get the right IP.

But if you just do an 'nslookup cfconsulting.ca' it fails.

I'm baffled.

You probably don't have the appropriate server in /etc/resolv.conf if you're using a UNIX (as opposed to a Windows) system. There are numerous ports of Dig to Windows; if using Windows please RTFM (or, if needed, UTSL) to see how they get their default servers.

You may wish to read the report:

http://www.dnsvalidation.com/reports/4d2458e07d79ee0c8b00000a

Your secondary nameserver (ns2.signupsystems.com) is not responding to DNS queries regarding domain cfconsulting.ca, it may be a nameserver misconfiguration (check zone configuration and ACLs) or a firewall issue (allow UDP packets to port 53) :

[vitalie@silver ~]$ dig @ns2.signupsystems.com cfconsulting.ca

; <<>> DiG 9.3.6-P1-RedHat-9.3.6-4.P1.el5_5.3 <<>> @ns2.signupsystems.com cfconsulting.ca
; (1 server found)
;; global options:  printcmd
;; connection timed out; no servers could be reached

Nameserver seems to be online, ns2.signupsystems.com is responding to ping requests:

[vitalie@silver ~]$ ping -c 3 ns2.signupsystems.com
PING ns2.signupsystems.com (69.31.163.69) 56(84) bytes of data.
64 bytes from 69.31.163.69: icmp_seq=1 ttl=53 time=222 ms
64 bytes from 69.31.163.69: icmp_seq=2 ttl=53 time=218 ms
64 bytes from 69.31.163.69: icmp_seq=3 ttl=53 time=212 ms

--- ns2.signupsystems.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 1999ms
rtt min/avg/max/mdev = 212.463/217.812/222.049/4.028 ms