Fix for SCOM DNS 2008 External Resolution Monitor in Constant Error State
If you're using System Center Operations Manager 2007 (SCOM) you may notice that your Windows Server 2008 DNS servers are in a chronic critical state, due to the DNS 2008 External Resolution Monitor . This monitor is in the Windows Server DNS 2000
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Read the complete post at http://www.expta.com/2010/03/fix-for-scom-dns-2008-external.html