DNS name resolution for the Internet

[Charles]

I lost my DNS name resolution for the Internet.

Windows 2000 Service Pack 3 (One server)
DNS
DHCP
No ICS
Active Directory
Router/firewall
512mb ram memory
80gb hard drive

DHCP is giving the pc their IP addresses, Gateway and DNS.
The Internet comes thru a router/firewall. TCP/IP is setup
with the address of the router/firewall as the default
Gateway and two static DNS addresses. I have a temporary
fix now by putting the server and Internet DNS address on
each pc in the DNS address box in TCP/IP. I look at both
Q263217 (ICS disable) and Q314822 Use DNS suffix in DNS
resolution) they were both ok. There were no changes or
updates at the start of the problem and the problem started
yesterday.

 

[TIM ROBERTS]

On Your DNS server, go to a command prompt can you do the following commands
telent 4.2.2.1 53? You should get a blank screen. If not on the
router/firewall open up UDP/TCP 53
Still on the DNS Server can you do these commands
nslookup
(default server "your server IP address")
set type=all (hit enter)
yahoo.com (enter)
Does it resolve, example below
yahoo.com internet address = 66.218.71.198
yahoo.com MX preference = 5, mail exchanger = mx4.mail.yahoo.com
yahoo.com MX preference = 1, mail exchanger = mx1.mail.yahoo.com
yahoo.com MX preference = 1, mail exchanger = mx2.mail.yahoo.com
yahoo.com nameserver = ns2.yahoo.com
yahoo.com nameserver = ns3.yahoo.com
yahoo.com nameserver = ns4.yahoo.com
yahoo.com nameserver = ns5.yahoo.com
yahoo.com nameserver = ns1.yahoo.com

yahoo.com nameserver = ns2.yahoo.com
yahoo.com nameserver = ns3.yahoo.com
yahoo.com nameserver = ns4.yahoo.com
yahoo.com nameserver = ns5.yahoo.com
yahoo.com nameserver = ns1.yahoo.com
mx1.mail.yahoo.com internet address = 64.157.4.79
mx1.mail.yahoo.com internet address = 64.156.215.5
mx1.mail.yahoo.com internet address = 64.156.215.6
mx1.mail.yahoo.com internet address = 64.157.4.78
mx2.mail.yahoo.com internet address = 64.156.215.5
mx2.mail.yahoo.com internet address = 64.156.215.6
mx2.mail.yahoo.com internet address = 64.157.4.78
mx4.mail.yahoo.com internet address = 66.218.86.253
mx4.mail.yahoo.com internet address = 66.218.86.254
mx4.mail.yahoo.com internet address = 216.136.129.5

1. Do you have a "." dot zone in your forward lookup zone? If so remove it
and follow the below Q artilce
298148 HOWTO: Remove the Root Zone (Dot Zone)
http://support.microsoft.com/?id=298148

Do we have forwarders set up? Open up the DNS MMC, right click the server,
properties, second tab. Try replacing them with 4.2.2.1. Then do ipconfig
/flushdns from the command prompt. While your in the DNS MMC, go to view at
the top, check advanced, then clear the cache.
Check to see if you have secure cache against pollution checked (Open up the
DNS MMC, right click the server, properties, thrid tab, last in the list).

Make sure the server is pointing to itself for DNS. If your using root
hints, make sure your server is not listed in there. (up the DNS MMC, right
click the server, properties, fourth TAB)

Make sure the DNS service is started, Are you registerying anything in the
event logs?