dig @my-server-ip mydomain.com works from inside, not from outside?

Hi,

My server has 2 ips: x.x.x.73 and x.x.x.248. I can access my site via these ips, using Web browser.



{Now, from a centos machine (not my server), using terminal}
If I:

dig @x.x.x.73 mydomain.com
dig @x.x.x.248 mydomain.com

I get the result:
Connection timed out; no server could be reached.

Could somebody please tell me how to fix it? Thank you.

*****

More information:

If I log in to my server using ssh and do:
dig @x.x.x.73 mydomain.com
dig @x.x.x.248 mydomain.com
I can see my zone shown as expected:

; <<>> DiG 9.3.6-P1-RedHat-9.3.6-16.P1.el5_7.1 <<>> @x.x.x.73 mydomain.com
; (1 server found)
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 12757
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 2, ADDITIONAL: 2

;; QUESTION SECTION:
;mydomain.com. IN A

;; ANSWER SECTION:
mydomain.com. 38400 IN A x.x.x.73
mydomain.com. 38400 IN A x.x.x.248

;; AUTHORITY SECTION:
mydomain.com. 38400 IN NS ns2.mydomain.com.
mydomain.com. 38400 IN NS ns1.mydomain.com.

;; ADDITIONAL SECTION:
ns1.mydomain.com. 38400 IN A x.x.x.73
ns2.mydomain.com. 38400 IN A x.x.x.248

;; Query time: 20 msec
;; SERVER: x.x.x.73#53(x.x.x.73)
;; WHEN: Sun Jan 15 11:46:30 2012
;; MSG SIZE rcvd: 129

*****

-BIND version 9.3.6, Centos 5.
-Logging to my server using ssh, do a "dig google.com" also shows expected results.

 

Hi,

are you running a dns server in these ips?If yes check if tcp and udp port 53 are open.

Cheers

 

Hi,

Yes, those ips are assigned to my vps/dns server.


It is my hosting/vps provider blocked it (udp port). It's fine now.
Thank you so much for taking your time.

Best regards.