Hi I am running exchange server 2010 and every now and then it stop sending e-mail. I get the following error. Could some please explain what this error means. + System - Provider [ Name] MSExchange CmdletLogs - EventID 6 [ Qualifiers] 49152 Level 2 Task 1 Keywords 0x80000000000000 - TimeCreated [ SystemTime] 2012-07-31T23:00:31.000000000Z EventRecordID 34201 Channel MSExchange Management Computer JOBORKETTSERVER.joborkett.local Security - EventData Get-User {Identity=NT AUTHORITY\SYSTEM} joborkett.local/Domain Controllers/JOBORKETTSERVER S-1-5-21-995933323-969237420-3127564037-1014 S-1-5-21-995933323-969237420-3127564037-1014 ServerRemoteHost-Unknown 15652 45 00:00:00.1490149 View Entire Forest: 'False', Default Scope: 'joborkett.local', Configuration Domain Controller: 'JOBORKETTSERVER.joborkett.local', Preferred Global Catalog: 'JOBORKETTSERVER.joborkett.local', Preferred Domain Controllers: '{ JOBORKETTSERVER.joborkett.local }' Microsoft.Exchange.Configuration.Tasks.ManagementObjectNotFoundException: The operation couldn't be performed because object 'NT AUTHORITY\SYSTEM' couldn't be found on 'JOBORKETTSERVER.joborkett.local'. Context Thanks Anthony

Looks like the server is having issues communicating with the domain controller. Ensure that DNS is setup correctly - only the domain controller should be set for internal DNS. I would also suggest that you run EXBPA from the toolbox and see what that flags. Simon. Simon Butler, Exchange MVP Blog | Exchange Resources | In the UK? Hire Me.

The operation couldn't be performed because object 'NT AUTHORITY\SYSTEM' couldn't be found on 'JOBORKETTSERVER.joborkett.local'. Can you open ADUC, find this DC, properties, security tab. Do you see system listed with full rights?James Chong MCITP | EA | EMA; MCSE | M+, S+ Security+, Project+, ITIL msexchangetips.blogspot.com

Is there any other events? Please follow Simon's suggestion, use Exbpa to do a check for your Exchange Server. Thanks, EvanEvan Liu TechNet Community Support

Hi I contacted our ISP and found that they had DNS enabled on the router. The have disabled it know. I will let it run for a couple of days and see if the problem reoccurs. Thanks Anthony

Ran Expba no seriuos problems where found. Suggested that I uograde the driver for the network card.

I cannot find a security tab under DC properties.

in ADUC, view menu, advanced features, then try again.James Chong MCITP | EA | EMA; MCSE | M+, S+ Security+, Project+, ITIL msexchangetips.blogspot.com