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Can't access one website

Posted on 2007-11-21
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Last Modified: 2013-12-07
Strange one...

We have a Small Business Network and everything was running wonderfully...until last week.

No one in our network can access a certain website anymore. It is our own website. Our website is hosted at an ISP and is working fine,, everyone else on the outside can access without issue, but no one in our domain.
We get a "page cannot be displayed message" we can access any other sites without an issue
Any ideas?
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Question by:carrgater31
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Expert Comment

by:wingatesl
ID: 20331557
If the internal domain and the website domain are the same you will have to add records into the DNS on Small Business Server to point to the website's IP address. From one of the PCs do
nslookup www.domain.com
and see what it resolves to. If you get no response I would definitely expect the issue to be with the DNS on your SBS.
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Expert Comment

by:Tom-J-Lael
ID: 20332141
I aggree with wingatesl. Hopefully you're internal domain is not named domain.com. I typically name domains I build on SBS 2003 is domain.local

It is my understanding that an SBS 2003 domain cannot be renamed.
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Expert Comment

by:Tom-J-Lael
ID: 20332149
To expand on wingatesl here is the nslookup command

Open Command Prompt by going to Start..typing in run..typing CMD and then hit enter.


type nslookup
set type=a
www.domain.com

if no IP address resolves...your internal DNS server is the issue...and I'm going to assume your internal domain is named domain.com
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Author Comment

by:carrgater31
ID: 20333112
Hi,
My internal domain is domain.local. It is also slightly different from my external domain.
I completed an NSlookup and it came back non-existant domain.
Is that the internal DNS?
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Accepted Solution

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wingatesl earned 250 total points
ID: 20334242
if your machines are pointing to the sbs server for DNS like they should. I would check for an entry in the DNS server related to your web site
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Expert Comment

by:wingatesl
ID: 20334245
This record should then be corrected or removed
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Expert Comment

by:Tom-J-Lael
ID: 20334619
Also,

Make sure your DNS server has good "forwarders" to point to. Typically, these forwarders should be your ISP's DNS servers, you'll need to call them to find out what they are

Right click the DNS Server and select properties
Click the forwarders tab
 
DNS Domain should be "all other domains"
Then add the ip addresses of the primary and secondary dns servers your ISP provies

after you've confirmed those are correct

do an ipconfig/flushdns
and an ipconfig/registerdns on the server and machines if neccessary
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Expert Comment

by:Tom-J-Lael
ID: 20334626
to give full instructions on what Wingatesl is saying is:

Make sure you do not have a foward lookup zone configured for your Domain.com zone.
If you do, you can more than likely safely delete it, barring any unknown factors
if you have to keep it, add the www. host and add the correct internet ip address
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Expert Comment

by:wingatesl
ID: 20335311
@Tom There is no need to have DNS forwarders in this situation
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