DNS timed out

Rasheed rasheed at anet.net.sa
Mon Dec 13 08:53:04 UTC 2004


Hi,
 

I'm facing a strange problem with my DNS sever. I'm running bind 9.2.2. I
have many complains from customers abut DNS timed out. I check it by myself
using nslookup from a client. The first request for MX for domain come.com
(test only) answered with timed out but second request for the same domain
get answers. I have made loglevel 3 and below you will find outputs. You can
see from below debug log in first request that there is time outage :-

 

Dec 13 11:28:59.098 client: debug 3: client 212.93.196.38#4071: replace

Dec 13 11:29:03.706 client: debug 3: client 212.93.196.38#4071: send



And this not happing in the second one.

I didn't modified things lately.

 

Thanks,

Rasheed

 

###########################################

> set q=mx

> come.com                  <First Request>

Server:  ns2.awalnet.net.sa

Address:  212.93.192.5

 

DNS request timed out.

    timeout was 2 seconds.

DNS request timed out.

    timeout was 2 seconds.

*** Request to ns2.awalnet.net.sa timed-out

> come.com                  <Second Request>

Server:  ns2.awalnet.net.sa

Address:  212.93.192.5

 

come.com

        primary name server = ns1.rjsnetworks.com

        responsible mail addr = jai.rjsnetworks.com

        serial  = 2004050701

        refresh = 900 (15 mins)

        retry   = 3600 (1 hour)

        expire  = 900 (15 mins)

        default TTL = 900 (15 mins)

>exit

############################################

 

 

##################### First Request ##############################

Dec 13 11:28:59.097 client: debug 3: client 212.93.196.38#4070: UDP request
Dec 13 11:28:59.097 client: debug 3: client 212.93.196.38#4070: query
Dec 13 11:28:59.097 client: debug 3: client 212.93.196.38#4070: send
Dec 13 11:28:59.097 client: debug 3: client 212.93.196.38#4070: sendto
Dec 13 11:28:59.097 client: debug 3: client 212.93.196.38#4070: senddone
Dec 13 11:28:59.097 client: debug 3: client 212.93.196.38#4070: next
Dec 13 11:28:59.097 client: debug 3: client 212.93.196.38#4070: endrequest
Dec 13 11:28:59.098 client: debug 3: client 212.93.196.38#4071: UDP request
Dec 13 11:28:59.098 client: debug 3: client 212.93.196.38#4071: query
Dec 13 11:28:59.098 client: debug 3: client 212.93.196.38#4071: replace

Dec 13 11:29:03.706 client: debug 3: client 212.93.196.38#4071: send
Dec 13 11:29:03.706 client: debug 3: client 212.93.196.38#4071: sendto
Dec 13 11:29:03.706 client: debug 3: client 212.93.196.38#4071: senddone
Dec 13 11:29:03.706 client: debug 3: client 212.93.196.38#4071: next
Dec 13 11:29:03.706 client: debug 3: client 212.93.196.38#4071: endrequest

 

##################### First Request ##############################

Dec 13 11:29:07.947 client: debug 3: client 212.93.196.38#4072: UDP request
Dec 13 11:29:07.947 client: debug 3: client 212.93.196.38#4072: query
Dec 13 11:29:07.947 client: debug 3: client 212.93.196.38#4072: send
Dec 13 11:29:07.947 client: debug 3: client 212.93.196.38#4072: sendto
Dec 13 11:29:07.947 client: debug 3: client 212.93.196.38#4072: senddone
Dec 13 11:29:07.947 client: debug 3: client 212.93.196.38#4072: next
Dec 13 11:29:07.947 client: debug 3: client 212.93.196.38#4072: endrequest
Dec 13 11:29:07.948 client: debug 3: client 212.93.196.38#4073: UDP request
Dec 13 11:29:07.948 client: debug 3: client 212.93.196.38#4073: query
Dec 13 11:29:07.948 client: debug 3: client 212.93.196.38#4073: send
Dec 13 11:29:07.948 client: debug 3: client 212.93.196.38#4073: sendto
Dec 13 11:29:07.948 client: debug 3: client 212.93.196.38#4073: senddone
Dec 13 11:29:07.948 client: debug 3: client 212.93.196.38#4073: next
Dec 13 11:29:07.948 client: debug 3: client 212.93.196.38#4073: endrequest

 





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