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WIN2k3 Server issue with Internet

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Last Modified: 2012-05-07
I have a win2k3 file server with about 30 users using Winxp in one of our sites.  Each server works independently on its own network/subnet mask.  In addition we have a managed firewall and we have a web filter.  About 3 weeks ago my server stopped going out into the WAN.  If I try and open IE and go out on the web it times out.  If I try and ping any website it times out.  I did not have this issue before.  I checked my DNS and that has not changed.  The funny thing is when I put an alternate DNS of 4.2.2.2 I am able to go the internet through a normal browser and through a command line.  In fact my web filter came up and I had to authenticate in order to go out on the web.  When I take the alternate DNS off, bingo back to square A and cannot get online.  I am however,  am able to ping the router and any other servers on the network/subnet and even remotely log onto any other server via remote admin whether I have the alternate DNS or not.
Any suggestions as to why this may be happening?
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Qlemo"Batchelor", Developer and EE Topic Advisor
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Top Expert 2015

Commented:
Your internal (?) DNS server seems to be screwed up or offline, or not forwarding DNS requests to Internet DNS servers. I would check that first.
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