Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

Sporadic DNS Timeouts in Windows 2003 DNS server

Posted on 2004-08-20
8
Medium Priority
?
343 Views
Last Modified: 2010-05-18
Recently upgraded network from W2k domain to W3k domain. Changed DNS servers. Currently running on domain controller. Problem is when you run nslookup from a client or even the dns server itself, i get sporadic "DNS  request timed out. Time out was 2 seconds. ***Rquest to xxx timed-out" when I try a domain like www.yahoo.com. What is strange is that it is sporadic. Sometimes it works, sometimes it doesn't. It is a major problem because it is affecting us sending out emails because the exchange server is getting timeouts sporadically on DNS lookups.  Thought maybe the problem was with the forwarders but if I set the server to the forwarder I am using it never times out. The DNS is AD-integrated. There does not appear to be any login/computer problems from an internal windows user standpoiint. Tried to delete specific cache entries and retry but no luck. One stange item is if I do a ipconfig /all from the DNS server it list two different dns suffixes even though I have not entered any in the tcp/ip settings. But when I do nslookup it always has the cortect one. Any idea?
0
Comment
Question by:Joe_S_NY
  • 4
  • 2
8 Comments
 
LVL 104

Expert Comment

by:Sembee
ID: 11854949
Have you configured a reverse lookup zone for your IP address range? That makes things works a little smoother. Make it AD integrated and it will be populated automatically as the IP addresses get updated by the AD.

Simon.
0
 

Author Comment

by:Joe_S_NY
ID: 11855050
I do have a reverse lookup zone and there is a ns and ptr record for my DNS server.
0
 

Author Comment

by:Joe_S_NY
ID: 11855319
Here is an example:

> hp.com
Server:  mars.company.comapanytest.com
Address:  10.4.12.5

DNS request timed out.
    timeout was 2 seconds.
*** Request to mars.company.comapanytest.com timed-out
> hp.com
Server:  mars.company.comapanytest.com
Address:  192.168.100.5

Non-authoritative answer:
hp.com  MX preference = 10, mail exchanger = smtp.hp.com
hp.com  MX preference = 10, mail exchanger = smtp.cce.hp.com
hp.com  MX preference = 30, mail exchanger = smtpx.hp.com

smtp.cce.hp.com internet address = 161.114.21.24
smtp.cce.hp.com internet address = 161.114.21.25
smtp.cce.hp.com internet address = 161.114.21.22
smtp.cce.hp.com internet address = 161.114.21.23
smtpx.hp.com    internet address = 15.81.176.21
smtpx.hp.com    internet address = 15.45.89.154
smtpx.hp.com    internet address = 15.45.89.155
smtpx.hp.com    internet address = 15.45.89.156
smtpx.hp.com    internet address = 15.45.89.157
smtpx.hp.com    internet address = 15.81.168.20
smtpx.hp.com    internet address = 15.81.168.21
smtpx.hp.com    internet address = 15.81.176.20

I ran it a few minutes later and it timed out again. Then ran it 5 times straigt right after and it resolved fine. There is an entry unser the cached root for hp.com on the DNS server.
0
What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

 
LVL 104

Expert Comment

by:Sembee
ID: 11856230
Are you using forwarders in DNS or allowing Windows to find the information itself?

Simon.
0
 

Author Comment

by:Joe_S_NY
ID: 11856278
I actuall just tried that. Seemed to help a little, but still getting timeouts.
0
 

Author Comment

by:Joe_S_NY
ID: 11856954
Bit the bullet and called MS. Turns out W3k handles DNS packets a little different than W2K and there are some issues also with certain firewalls (CISCO). Something about packets being larger than 512K. ANyway, changed a registry setting in windows 2003 and it solved it in conjuntion with turning off 'include parent domain in dns suffix'. Cisco also has a fix. Problem Solved.
0
 

Accepted Solution

by:
CetusMOD earned 0 total points
ID: 11920510
Closed, 500 points refunded.
CetusMOD
Community Support Moderator
0

Featured Post

Veeam Disaster Recovery in Microsoft Azure

Veeam PN for Microsoft Azure is a FREE solution designed to simplify and automate the setup of a DR site in Microsoft Azure using lightweight software-defined networking. It reduces the complexity of VPN deployments and is designed for businesses of ALL sizes.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This is the first one of a series of articles I’ll be writing to address technical issues that are always referred to as network problems. The network boundaries have changed, therefore having an understanding of how each piece in the network  puzzl…
Measuring Server's processing rate with a simple powershell command. The differences in processing rate also was recorded in different use-cases, when a server in free and busy states.
Michael from AdRem Software explains how to view the most utilized and worst performing nodes in your network, by accessing the Top Charts view in NetCrunch network monitor (https://www.adremsoft.com/). Top Charts is a view in which you can set seve…
Despite its rising prevalence in the business world, "the cloud" is still misunderstood. Some companies still believe common misconceptions about lack of security in cloud solutions and many misuses of cloud storage options still occur every day. …

916 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question