[BlueOnyx:05984] 1:1 NAT and DNS - Domains not resolving regularly

[Titus Bolton]

Greetings and Salutations:

I have an issue with domain names not resolving, and I am pretty sure it has something to do with our NAT'ing and our DNS, though I cannot be positive.

We host a large number of domains, and we have noticed that the domains are not resolving properly outside of the local network.  Two of the domains are comsiteconstruction.com and radiotowerinstallers.com.

When I ping them I get something to the extent of:

ping radiotowerinstallers.com
PING radiotowerinstallers.com (10.0.0.200): 56 data bytes
64 bytes from 10.0.0.200: icmp_seq=0 ttl=64 time=50.060 ms

ping comsiteconstruction.com
PING comsiteconstruction.com (10.0.0.140): 56 data bytes
64 bytes from 10.0.0.140: icmp_seq=0 ttl=64 time=40.006 ms

Pings from outside our network
http://network-tools.com/default.asp?prog=ping&host=comsiteconstruction.com

Ping 216.132.149.141

[comsiteconstruction.com]

Round trip time to 216.132.149.141: 417 ms
Round trip time to 216.132.149.141: 529 ms
Round trip time to 216.132.149.141: 723 ms
Timed out
Timed out
Timed out
Round trip time to 216.132.149.141: 501 ms
Timed out
Round trip time to 216.132.149.141: 508 ms
Round trip time to 216.132.149.141: 173 ms

Average time over 10 pings: 285.1 ms

http://network-tools.com/default.asp?prog=ping&host=radiotowerinstallers.com

Ping

[radiotowerinstallers.com]

Bad destination
Bad destination
Bad destination
Bad destination
Bad destination
Bad destination
Bad destination
Bad destination
Bad destination
Bad destination

Average time over 10 pings: 0 ms


We're using a Cisco 3700 with a 1:1NAT.  The webservers are configured with the internal IPs.

Here's a link that gives some more information regarding our DNS issues:
http://www.dnsstuff.com/tools/dnsreport?domain=comsiteconstruction.com&format=raw&loadresults=true&token=2631b81c48a7cd4d17c01c08180f2013

Please let me know if I can give any more information.

Kind regards,

Titus Bolton
Antenna Systems & Solutions, Inc.
931 Albion Avenue
Schaumburg, Illinois 60193-4550
United States of America
Phone: +1-847-584-1000   Fax: +1-847-584-9951
http://www.antennasystems.com
 
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