Domain Problems -- Windows 7 and 2008 R2 won't connect to Domain

i'm trying figure out problems joining domain. network little wierd , quite not ideal. running active directory exchange, using novell of our networking until year or ago. dropped novell in favor of using windows domain. pdc server 2003 machine. i've got ad installed on new exchange 2007 server that's running server 2008 (r1). 

my xp clients join domain fine once point dns settings on nic cards these 2 domain controllers. i've had problems trying few newer machines on domain. windows 7 , server 2008r2 seem have same problem. after changing dns settings, i've had trouble getting join domain. gives error path not found. can ping servers name, dns settings working. after trial , error, trying bunch, i've been able clients join domain. after join, can't logon domain users. says "there no logon servers process request". 

i've got test machine running server 2008 r2 ad, , able join 7 clients domain without problems, must wrong production domain, i'm kinda out of ideas.

is there security setting or cause problems newer os clients?  do need server 2003 machine out of domain controller mix?

the fact can ping servers name not mean dns functional. start running dcdiag /v /e , let know if uncovers issues. might want refer http://technet.microsoft.com/en-us/library/bb727055.aspx for more info.

hth
marcin

Windows Server  >  Directory Services