Hello, We have a Windows 2008 DNS server in our DMZ domain which will generate a critical alert “from time to time” for External Addresses Resolution Alert. The part I can’t understand is when it fails the Best Time and Worst Time are blank. I could understand it failing if it showed a Worst Time over the threshold, but not sure what to think when these are blank. Additionally this only seems to fail about two times a week. Thanks, Tom Output from failure Date and Time: 9/27/2010 6:53:48 PM Property Name Property Value SuccessCount 0 NonAuthoritativeCount 0 FailureCount 1 BestHost BestServer BestTime 0 WorstHost WorstServer WorstTime 0 FailingPairs 192.168.30.50,microsoft.com. Output from success Date and Time: 9/27/2010 7:13:46 PM Property Name Property Value SuccessCount 1 NonAuthoritativeCount 1 FailureCount 0 BestHost microsoft.com. BestServer 192.168.30.50 BestTime 0.172 WorstHost microsoft.com. WorstServer 192.168.30.50 WorstTime 0.172 FailingPairs Tom Martin Email: tmartin@caa.com

There is a known issue with this monitor, but you seem to have addressed the record type lookup. For those reading who have not - Create an override to have the record type look for the A record, or change the domain from www.microsoft.com to microsoft.com I think you are saying here that sometimes it fails, but more often it succeeds. In this case the problem is probably real. In these cases, you are probably getting a total failure. Look for events on the agent in the Operations Manager event log - see if there is more information. In a total failure case, the best time and worst time values are probably not accurate.Microsoft Corporation

Hi, Please check and adjust your configurations and settings referring to the management guide: Windows Server DNS Management Pack Guide - Getting started - Optional Configuration http://technet.microsoft.com/en-us/library/dd187144.aspx If there are any related errors in Event log on both the SCOM Server and the DNS server sides, please also let us know the details. Hope this helps. Thanks. Nicholas Li - MSFT Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Hi Tom It looks like the failure is a failure to actually pull the results back to evaluate against the thresholds - are there any WMI or script errors from this server at the same time? Is there a pattern to what time of day this fails? Can it be correlated with other alerts? If it is only failing a couple of times a week then it might just be an occassional script problem (lack of resource to complete \ someone restarts the service as the script is executing) or it could be a real issue and the script isn't written in such a way as to provide a more appropriate message. I strongly doubt it is a fundamental configuration issue though. Cheers Graham Cheers Graham View OpsMgr tips and tricks at http://systemcentersolutions.wordpress.com/