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Active Directory for Windows Server 2008 R2 Replica Problem

I've two windows 2008 r2 active directory domain controller in two different places connected through a vpn connection. Sometimes i receive RPC Errors ("RPC services not avaible") and the replica doesn't work correctly. Sometimes I've deleted the domain zone with the active directory name, I've created a new one and the replica worked correctly.
How can fix this DNS Server problem?
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R0yal
Asked:
R0yal
1 Solution
 
sneakanddestroyCommented:
On your VPN are you using DNS instead of IP Address?
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snusgubbenCommented:
Have you configured DNS scavaging? How often do you receive those messages?
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Darius GhassemCommented:
You need to make sure you have all ports opened so replication can take place.

If you are having issues please post dcdiag
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R0yalAuthor Commented:
For snusgubben: I receive this message about every 2 months. I didn't configure  DNS scavaging. Sometimes I do that manually from the dns snap-in.
What is  DNS scavaging?How can i configure it?
Thanks.


For others:
All vpn ports are opened. Usually the controller works correctly.
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snusgubbenCommented:
DNS scavenging will just clean out stale records. I was just thinking about maybe the A-record got deleted since recreating the zone fixed you up.

http://blogs.technet.com/b/networking/archive/2008/03/19/don-t-be-afraid-of-dns-scavenging-just-be-patient.aspx
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