MS Exchange 2007 Problem, Event ID4002

Hi

Major problem here out of no-where, everything was working fine at that start of the day and no changes were made.

Suddenly all version of Outlook (2003/2007) we use started asking for a username and password to connect to exchange 2007. I check OWA and this is working fine.

So after a restart i checked the event log and found it filling up with error 4002 (see bottom)

I have done a few hours of searching but can find literally nothing about from suggestion i should open a support call with MS, which i would like to avoid.

(if i restart the service is works normally for about 30 seconds, then this error starts appearing every minute)

- System

  - Provider

   [ Name]  MSExchange System Attendant Mailbox
 
  - EventID 4002

   [ Qualifiers]  49152
 
   Level 2
 
   Task 1
 
   Keywords 0x80000000000000
 
  - TimeCreated

   [ SystemTime]  2009-04-24T12:20:34.000Z
 
   EventRecordID 69080
 
   Channel Application
 
   Computer norserver2.orwelltrucks.intra
 
   Security
 

- EventData

   56
   Cannot open mailbox /o=Orwell Trucks/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Configuration/cn=Servers/cn=NORSERVER2/cn=Microsoft System Attendant.
   Microsoft.Exchange.Data.Storage.StoragePermanentException: Cannot open mailbox /o=Orwell Trucks/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Configuration/cn=Servers/cn=NORSERVER2/cn=Microsoft System Attendant. ---> Microsoft.Mapi.MapiExceptionCallFailed: MapiExceptionCallFailed: Unable to make connection to the server. (hr=0x80004005, ec=5) Diagnostic context: Lid: 23065 EcDoConnectEx called [length=188] Lid: 17913 EcDoConnectEx returned [ec=0x5][length=56][latency=1] Lid: 19778 Lid: 27970 StoreEc: 0x5 Lid: 17730 Lid: 25922 StoreEc: 0x5 at Microsoft.Mapi.MapiExceptionHelper.ThrowIfError(String message, Int32 hresult, Int32 ec, DiagnosticContext diagCtx) at Microsoft.Mapi.ExRpcConnection.Create(ConnectionCache connectionCache, ExRpcConnectionCreateFlag createFlags, ConnectFlag connectFlags, String serverDn, String userDn, String user, String domain, String password, String httpProxyServerName, Int32 ulConMod, Int32 lcidString, Int32 lcidSort, Int32 cpid, Int32 cReconnectIntervalInMins, Int32 cbRpcBufferSize, Int32 cbAuxBufferSize) at Microsoft.Mapi.ConnectionCache.OpenMapiStore(String mailboxDn, Guid mailboxGuid, Guid mdbGuid, ClientIdentityInfo clientIdentity, String userDnAs, OpenStoreFlag openStoreFlags, CultureInfo cultureInfo, String applicationId) at Microsoft.Mapi.ConnectionCache.OpenMailbox(String mailboxDn, Guid mailboxGuid, Guid mdbGuid, WindowsIdentity windowsIdentityAs, String userDnAs, OpenStoreFlag openStoreFlags, CultureInfo cultureInfo, String applicationId) at Microsoft.Exchange.Data.Storage.ConnectionCachePool.OpenMailbox(String serverDn, String userDn, String mailboxDn, Guid mailboxGuid, Guid mdbGuid, Object identity, ConnectFlag connectFlag, OpenStoreFlag openStoreFlag, CultureInfo cultureInfo, String clientInfoString, Boolean secondTry) --- End of inner exception stack trace --- at Microsoft.Exchange.Data.Storage.ConnectionCachePool.OpenMailbox(String serverDn, String userDn, String mailboxDn, Guid mailboxGuid, Guid mdbGuid, Object identity, ConnectFlag connectFlag, OpenStoreFlag openStoreFlag, CultureInfo cultureInfo, String clientInfoString, Boolean secondTry) at Microsoft.Exchange.Data.Storage.ConnectionCachePool.OpenMailbox(String serverDn, String userDn, String mailboxDn, Guid mailboxGuid, Guid mdbGuid, Object identity, ConnectFlag connectFlag, OpenStoreFlag openStoreFlag, CultureInfo cultureInfo, String clientInfoString, Boolean secondTry) at Microsoft.Exchange.Data.Storage.ConnectionCachePool.OpenMailbox(String serverDn, String userDn, String mailboxDn, Guid mailboxGuid, Guid mdbGuid, Object identity, ConnectFlag connectFlag, OpenStoreFlag openStoreFlag, CultureInfo cultureInfo, String clientInfoString) at Microsoft.Exchange.Data.Storage.MailboxSession.Initialize(LogonType logonType, ExchangePrincipal owner, DelegateLogonUser delegateUser, Object identity, OpenMailboxSessionFlags flags) at Microsoft.Exchange.Data.Storage.MailboxSession.CreateMailboxSession(LogonType logonType, ExchangePrincipal owner, DelegateLogonUser delegateUser, Object identity, OpenMailboxSessionFlags flags, CultureInfo cultureInfo, String clientInfoString) at Microsoft.Exchange.Data.Storage.MailboxSession.OpenAsAdmin(ExchangePrincipal mailboxOwner, CultureInfo cultureInfo, String clientInfoString, Boolean useLocalRpc, Boolean ignoreHomeMdb) at Microsoft.Exchange.Data.Storage.MailboxSession.OpenAsAdmin(ExchangePrincipal mailboxOwner, CultureInfo cultureInfo, String clientInfoString) at Microsoft.Exchange.Servicelets.SystemAttendantMailbox.Servicelet.Work()