Various client computers cannot connect to internet in domain

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i suspect dns problem, not sure - have domain 10 ethernet , 10 wireless clients running mix of windows xp , windows 7 machines.....we added 2008r2 server our single 2003r2 domain. both running domain controllers.  2003 dc running dhcp , dns , 2008dc running dns.  have single nic's pointing primary dc preferred dns and other secondary dns.  wins installed on 2003 dc.  various client computers connect network, cannot browse internet.  have tried static ip's - no help.  client computers (dhcp assigned) point 2003 box dhcp, 2008 box dns, , 2003 box wins.....can point me in right direction begin troubleshooting this?  did dcdiag /test:dns on both boxes, no errors.....

thanks posting info. ipconfigs good, although point partner dc first, second, no big deal issue seeing.

i can see edns0 not issue 4096 & 3843 results.

the time-outs what's causing ths problem using 192.168.0.202, 2008 r2 box. bet if make 2003 server first in dns list clients, should work.

there hotfixes available should address issue.


dns server service not use root hints resolve external names in windows server 2008 r2 - post windows 2008 r2 sp1 hotfix available.
article id: 2616776 - last review: october 12, 2011, applies •windows 2008 r2 datacenter •windows 2008 r2 ent •windows 2008 r2 std
in lieu of installing hotfix: "to work around issue, configure dns server use forwarders instead of root hints resolve external names."
requires restart.
http://support.microsoft.com/kb/2616776

dns queries external domains not resolved when use conditional forwarding in windows server 2008 - post windows 2008 sp2 hotfix available
requires restart.
http://support.microsoft.com/kb/2625735/

dns server stops responding dns queries client computers in in windows server 2003, in windows server 2008 or in windows server 2008 r2 - post service pack hotfix available.
not require restart.
http://support.microsoft.com/kb/2655960

windows server 2008 , windows server 2008 dns server service not resolve external dns names after works while in windows server 2008 r2
hotfix release - (released 4/15/2011)
http://support.microsoft.com/kb/2508835

r2 dns servers may fail resolve queries top-level domains
http://support.microsoft.com/kb/968372

ace fekay
mvp, mct, mcitp/ea, mcts windows 2008/r2 & exchange 2007, exchange 2010 ea, mcse & mcsa 2003/2000, mcsa messaging 2003
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