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Windows Server 2008 R2 DNS forwarding issue

My company has two main Windows forests - domain.com and domain.local.  The former is running Windows Server 2003 on all DCs and the latter is all Windows Server 2008 R2 (Server Core).  The users are logging in to domain.local.

We have a number of services that are running on member servers on domain.local but we have created entries in domain.com’s DNS to allow for user-friendly names.  The domain.local DNS servers have a forest-wide conditional forwarder to redirect all domain.com requests to a couple of the old, Windows 2003 DNS on domain.com.
This has all worked fine for a long time.  However, in the last couple of weeks we have encountered issues whereby periodically users have been unable to resolve the addresses of these services.  This occurs across a number of locations (we are a wordwide company).  Using nslookup we have determined that the domain.local DNS server do not appear to be forwarding the requests.  However, when we reboot the users’ DNS server, which is their local DC, the issue goes away and the servers are then able to resolve the domain.com addresses correctly.

Can you please assist us in determining the root cause of this issue so that we do not have to keep rebooting our DCs.

Thanks in advance,

Stephen.
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gearbulk
Asked:
gearbulk
1 Solution
 
aadi369Commented:
Meantime, Instead of rebooting the server...try restarting the dns services on the system.......
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