Websites not accesible from Local Network

Posted on 2011-10-11
Medium Priority
Last Modified: 2012-05-12
Hi all,

I have a local network that is not letting users to access a few sites. We do not have any firewall blocking at all. We do have a domain server that at the same time was a DHCP and it is also Wins server.

When we killed the exchange email server they couldn't access the mail servers inside the office, by name through Outlook, we had to use the IP numbers instead. But yes outside using the name (mail.ourdomain.com).

Also we couldn't access our webpage inside the office until I deleted DNS txt values. I believe the webpage was hosted locally in the past.

I am getting this message from DNS event viewer:

"The DNS server was unable to complete directory service enumeration of zone ourdomain.com.  This DNS server is configured to use information obtained from Active Directory for this zone and is unable to load the zone without it.  Check that the Active Directory is functioning properly and repeat enumeration of the zone. The extended error debug information (which may be empty) is "". The event data contains the error."

We changed ISP 2 months ago and probably that is when the problem started.I just changed Forwarders within the DNS server to our current ISP DNS's which is Comcast.

Any suggestions?


Any suggestions.
Question by:guevaraca
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LVL 13

Accepted Solution

murgroup earned 2000 total points
ID: 36952896
You will probably have to setup a new zone for ourdomain.com internally. Create an A record for www pointing to the public IP of your website. Your hosting provider can give you this. Then create an A record for mail and point it to the internal IP of the Exchange box.
This assumes your internal domain is not ourdomain.com already ie. .local, .internal, .lan If it is ourdomain.com then the above entries should work.

Author Comment

ID: 36953135
But what about the websites we can't see?
LVL 13

Expert Comment

ID: 36953209
Your DNS server should have forwarders setup. If it does not, add the DNS servers from your ISP. If it does flush the cache, scavenge stale records and update the server data files.

You do this by right clicking the root DNS zone and click the oppropriate menu item.

configure forwarders.
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Author Comment

ID: 36953321
I receive this message after doing it and still having the sites issue.

The DNS server has completed a scavenging cycle but no nodes were visited. Possible causes of this condition include:
  1) No zones are configured for scavenging by this server.
  2) A scavenging cycle was performed within the last 30 minutes.
  3) An error occurred during scavenging.
The next scavenging cycle is scheduled to run in 0 hours.
The event data will contain the error code if there was an error during the scavenging cycle.


Thanks for your help.
LVL 13

Expert Comment

ID: 36953344
What is the dns IP set to on the server NIC? It should be set to it's own IP address. I know stupid question but had to ask.
Also I agree it is probably an internal DNS problem related to the ISP change. You never hosted the public domain DNS internally did you?
LVL 13

Expert Comment

ID: 36953347

Author Comment

ID: 36953357

That server has as DNS server, not secondary server on the NIC

That server is also the domain controller.

Not sure about the second question. We took over 2 months ago.

The webpage was hosted internally as well as the email. We move everything outside.

LVL 13

Expert Comment

ID: 36953362
Open a command prompt and run netdiag and dcdiag on the DNS server. See if that presents any useful information?

Please look in the server event logs and tell us if there are any event id's related to DNS failures.

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