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How i know my external dns is working or not

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ahmedsa:
Hi I have mail server sme
it is already send and receive emails from outside my domain no problem in that
but When i ping to my external dns it not ping and it give me as following
[root@mserver ~]# ping 212.93.192.5
PING 212.93.192.5 (212.93.192.5) 56(84) bytes of data.
this ping from mail server
Are there are any way to test dns work or not

stephdl:
your external dns server doesn't answer to pinq requests, It is the same here on my computer.
eventually you can request a dns question to your external dns like this


--- Code: ---dig any your_dns_name @212.93.192.5
--- End code ---

ahmedsa:
Thanks for reply
I write command as following and this is my result
login as: root
root@192.168.1.4's password:
Last login: Sun Aug  9 10:03:02 2015 from 192.168.1.105
[root@mserver ~]# dig 212.93.192.5

; <<>> DiG 9.2.4 <<>> 212.93.192.5
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 52083
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;212.93.192.5.                  IN      A

;; ANSWER SECTION:
212.93.192.5.           655360  IN      A       212.93.192.5

;; Query time: 11 msec
;; SERVER: 192.168.1.4#53(192.168.1.4)
;; WHEN: Sun Aug  9 11:07:08 2015
;; MSG SIZE  rcvd: 46
Are this meaning it is work good or not
please help me

janet:
ahmedsa

Try using the command you were advised

dig any altawi.com.sa @212.93.192.5

; <<>> DiG 9.3.6-P1-RedHat-9.3.6-25.P1.el5_11.3 <<>> any altawi.com.sa @212.93.192.5
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 64393
;; flags: qr aa rd; QUERY: 1, ANSWER: 6, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;altawi.com.sa.                 IN      ANY

;; ANSWER SECTION:
altawi.com.sa.          14400   IN      MX      1 altawi.com.sa.
altawi.com.sa.          14400   IN      MX      0 mserver.altawi.com.sa.
altawi.com.sa.          86400   IN      NS      ns2.awalnet.net.sa.
altawi.com.sa.          86400   IN      NS      webx1.awalnet.com.
altawi.com.sa.          14400   IN      A       212.93.222.10
altawi.com.sa.          86400   IN      SOA     webx1.awalnet.com. aoulah.stcas.com.sa. 2015073002 86400 7200 3600000 86400

;; Query time: 429 msec
;; SERVER: 212.93.192.5#53(212.93.192.5)
;; WHEN: Sun Aug  9 22:29:40 2015
;; MSG SIZE  rcvd: 197

ahmedsa:
Thank you for reply
my question if dns have problems
what answer it must show to me
what answer must show to me if there are any wrong in dns

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