Member servers "talking" to DC's outside their site

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i have 2008 r2 domain 4 different sites.  i have site links setup sites , site links replicate like:

1 <--sla--> 2 <--slb--> 3 <--slc--> 4

  1. i have member servers in multiple subnets making connections dc's outside of site.  
  2. i have dc's in site 1 communicating to dc's in site 3 , 4 on ldap (tcp) , dns (udp).  

i have checked ip site links, ntds connection links, event logs, , i'm not sure why these hosts still insist on talking dc's outside site.  any troubleshooting tips appreciated.  member servers in 1 site may communicate member servers in site.  i'm not sure if helpful information thought i'd mention it.  

thanks in advance!

"site costed referralsapplies dfs sysvol share , not work basl turned off, recommend jorge blogs post here more information:
http://jorgequestforknowledge.wordpress.com/2010/05/19/locating-domain-controllers-to-access-the-default-domain-dfs-sysvol-netlogon/

enfo zipper
christoffer andersson – principal advisor
http://blogs.chrisse.se - directory services blog



Windows Server  >  Directory Services



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