System Center Operation Manager Agent problem

System Center Operation Agent working on Exchange Server 2007
it is gray. I receive some event from event log.
 

Source:HealthService
Event ID: 1102
 
Rule/Monitor "Microsoft.SystemCenter.DiscoverADManagedComputer" running for instance "AktifMail01.aktifbank.com.tr" with id:"{53C7B656-652D-FC25-F3A9-E717A76AE7C0}" cannot be initialized and will not be loaded. Management group "AktifOM"
 
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
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Source :OpsMgr Connector
 
Event ID: 21024
 
OpsMgr's configuration may be out-of-date for management group AktifOM, and has requested updated configuration from the Configuration Service. The current(out-of-date) state cookie is "59 45 54 46 09 46 05 42 67 84 07 85 F4 BF 0D 31 D1 80 F7 68 "
 
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
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Source :OpsMgr Connector
 
Event ID : 21022
 
No certificate was specified.  This Health Service will not be able to communicate with other health services unless those health services are in a domain that has a trust relationship with this domain.  If this health service needs to communicate with health services in untrusted domains, please configure a certificate.
 
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
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Source:HealthService
Event ID:2011
 
The Health Service did not find any policy in Active Directory
 
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
 
Source

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