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IE cannot open web page from our LAN, but we can open it from anywhere else.

Our Web site hosting company changed the IP of where our company site is stored.  Now the  workstations on our local LAN will not connect to our web site.  We can access any other site we want to from our lan and We can access the company site from anywhere else, just not on any device connected to our LAN.  

We have a Windows 2008 server with AD and DNS.
DNS does have forward lookup zone with (A) records for autodiscovery, mail and www

We have a second windows 2008 server with Exchange

Before the hosting company moved the site to a new IP we could access the site from anywhere.  

What I have done so far is:
Change the DNS www (A) record to reflec the new IP.
Flushed the cache on the workstations (ipconfig /flushdns)
From a lan workstation ping the site URL and it does return the new IP.
Clear the dns cache from DNS manager.
Add a forwarder pointing to open dns.

There is no Proxy server

When i set the router (which aslo does the DHCP) to only use open dns we can connect to the site from the LAN, but we cannot get email from our onsite exchange server.  

Does anyone have any suggestions?
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gooberpea
Asked:
gooberpea
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2 Solutions
 
NicolusCommented:
Seems like you've done everything right.

How long has this been going on?
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Nagendra Pratap SinghCommented:
Can you try using firefox/chrome?

Can you try using a Non-Domain PC?
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msallamCommented:
Just one very basic test... I do not see it listed in what you did, but it is worth trying, although you might have already did..

Did you try to telnet the new IP on port 80 (or what ever port the website works on)?

Hope this helps..
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gooberpeaAuthor Commented:
Thanks for all the comments,

Nicolus - This has been happening sense last Thursday and to day is Tuesday.  I had on Saturday also set the TTL to 1 Minute.

npsingh123 - I have not tried either of these but will later today.

msallam - I will try later today.  if i can telnet in using the port, do i need to add the port to the dns setting?
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msallamCommented:
If telnet works, then you would rule out the possibility of a network issue and start looking at other possibilities.

If telnet does not work, then it is a network issue.
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Nagendra Pratap SinghCommented:
BTW telnet is not available on the New OSes (at least directly). If you don't have XP or lower OS then you may have to use something like putty or putty portable.

http://portableapps.com/apps/internet/putty_portable

http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html
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gooberpeaAuthor Commented:
Firefox just provides the spinning wheel and says connecting.  Firefox can connect to any other web site.

i have not tried a non domain pc yet.

Attemtp to use putty to telnet.  I may not have used it correctly, but I seletced Telnet for the connection, keyed in the IP address and changed the port to 80 (i do not know what port the site is listining on).  All i got was a empty command box with a green curser.  this lasted for about 60 sec then closed.  If I need to use putty differently please do tell.

Again, We can connect to any other web site and we can connect to our site but only when not connected to our local network.

looking on line I have tried some other solutions.
I have set a RecieveTimeout reg entry
turned off all firewalls
reset all IE settings

None of these things worked.

Any suggestions?
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msallamCommented:
For the telnet, you can try enabling it from Windows as it can be available natively (but not installed by default) by following the instructions here: http://social.technet.microsoft.com/wiki/contents/articles/910.enabling-telnet-client-in-windows-7.aspx

Let us know how it goes..
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gooberpeaAuthor Commented:
I have tried with a non domain PC, Still have the same issue.

I added the telnet client to my W7 system.  When i open a cmd screen and use telnet <ip address> 80 I get a blank command screen.  what kind of a response should i be getting?
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msallamCommented:
If you get a blank screen, then the port is open. You should rule out the possibility of a network issue.

- Is you web browser configured with any proxy settings?
- What other types of devices are there between your client PCs and your internal web Server? It will also be useful if you make a trace route to the new IP.

You can do this by opening a command prompt and typing:
tracert w.x.y.z.
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gooberpeaAuthor Commented:
We have no proxy servers and IE is not set to connect through one.

I did a tracert on the ip address and the url.  Both went to the right place.

Devices are PC, Switch, router, Cable modem.  All represented in the tracert.

When a user opens a web browser on our LAN and keys in www.mrbf.org or mrbf.org

IE displays, Internet Explorer cannot display the webpage mrbf.org

Google Chrome, displays Cannot find mrbf.org

Firefox, cursor just spins and spins, no connection

Any suggestions would be helpful
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msallamCommented:
Just for additional confirmation, can you install on Firefox an addon called flagfox.
You can download it from here: https://addons.mozilla.org/en-us/firefox/addon/flagfox/.

Once installed, try visiting the URL once more and tell us what IP is the browser attempting to connect to. You should find that by hovering with the mouse over the little flag at the end of the address bar.
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gooberpeaAuthor Commented:
I did add the flagfox addon.  All FireFox does is state in the tab that it is connecting with a spinning little circle (like the wait i am doing something or what some call the wheel of fortune).  FF will do this until you close ff.  The flag does not show up for our site.  The flag will show up for other sites and does work.
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gooberpeaAuthor Commented:
Is this a DNS issue?  How do we determine?
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msallamCommented:
Just go to one of the PCs that has the issue.
Start up a command prompt window, type:

1. Nslookup, then click Enter
2. The host name of the website having the issue (Once type www.mrbf.org and another time, mrbf.org) then click enter.

Paste the results here.
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gooberpeaAuthor Commented:
www.mrbf.org
Server:  <servername>
Address: <local dns server ip>

name:  www.mrbf.org
address:  <the ip of the hosting server>

mrbf.org
Server:  <servername>
Address: <local dns server ip>

name: mrbf.org

this did not resolve to the hosting server.  i did not get an address line at all
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gooberpeaAuthor Commented:
I have put a DNS record in the forward lookup zone for mrbf.org to handle the root mrbf.org.  This made the site work from our local workstations.  

It was msallam that tipped me off to using nslookup to see where we were going wrong.  

It seems that somehow the folks hanlding the SEO did this to us.   The statment below is their explanation.  

"For SEO purposes it’s best to pick one or the other (with www or without)
and stick to it. In general the shorter the better so we’re taking away the
www ¬ any url with the www will go to the correct place, but it will
disappear."

Thanks to all who replied.  The solution to this was to have a dns (a) record to handle the root name as well.  

I did not konw that.
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gooberpeaAuthor Commented:
I selected my own comment as part of the solution so that others would see what to do to resolve this issue.  I selected the post from msallam so that others can perform the same nslookup test to determine what needs to be done.

Thanks to all that replied.
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