Проблема с отправкой почты в Exchange Server 2007 SP3

Я установил Exchange Server 2007 SP3, и когда я отправляю электронное письмо, я получаю сообщение об ошибке.

Вот мое сообщение об ошибке.

Microsoft Exchange couldn't read the configuration from the Active Directory directory service because of error: Failed to load config due to exception: Microsoft.Exchange.Data.Directory.ADTransientException: Active Directory operation failed on server.techsoft.local. The supplied credential for 'MAILSERVER\Administrator' on Bind operation is invalid. Error Code: 0x31. ---> Microsoft.Exchange.Data.Directory.ADInvalidCredentialException: Active Directory operation failed on server.techsoft.local. The supplied credential for 'MAILSERVER\Administrator' on Bind operation is invalid. Error Code: 0x31. ---> System.DirectoryServices.Protocols.LdapException: The supplied credential is invalid.
   at System.DirectoryServices.Protocols.LdapConnection.BindHelper(NetworkCredential newCredential, Boolean needSetCredential)
   at Microsoft.Exchange.Data.Directory.PooledLdapConnection.BindWithRetry(Int32 maxRetries)
   --- End of inner exception stack trace ---
   at Microsoft.Exchange.Data.Directory.PooledLdapConnection.BindWithRetry(Int32 maxRetries)
   at Microsoft.Exchange.Data.Directory.LdapConnectionPool.CreateOneTimeConnection(NetworkCredential networkCredential, ADServerInfo serverInfo)
   at Microsoft.Exchange.Data.Directory.TopologyProvider.PopulateConfigNamingContexts()
   at Microsoft.Exchange.Data.Directory.TopologyProvider.GetConfigurationNamingContext()
   at Microsoft.Exchange.Data.Directory.ADSession.GetConnection(String preferredServer, Boolean isWriteOperation, Boolean isNotifyOperation, ADObjectId& rootId)
   at Microsoft.Exchange.Data.Directory.ADSession.GetReadConnection(String preferredServer, ADObjectId& rootId)
   at Microsoft.Exchange.Data.Directory.ADSession.Find(ADObjectId rootId, String optionalBaseDN, ADObjectId readId, QueryScope scope, QueryFilter filter, SortBy sortBy, Int32 maxResults, IEnumerable`1 properties, CreateObjectDelegate objectCreator, CreateObjectsDelegate arrayCreator)
   at Microsoft.Exchange.Data.Directory.ADSession.Find(ADObjectId rootId, QueryScope scope, QueryFilter filter, SortBy sortBy, Int32 maxResults, IEnumerable`1 properties, CreateObjectDelegate objectCtor, CreateObjectsDelegate arrayCtor)
   at Microsoft.Exchange.Data.Directory.ADSession.Find[TResult](ADObjectId rootId, QueryScope scope, QueryFilter filter, SortBy sortBy, Int32 maxResults, IEnumerable`1 properties)
   at Microsoft.Exchange.Data.Directory.SystemConfiguration.ADSystemConfigurationSession.Find[TResult](ADObjectId rootId, QueryScope scope, QueryFilter filter, SortBy sortBy, Int32 maxResults)
   at Microsoft.Exchange.Data.Directory.SystemConfiguration.ADSystemConfigurationSession.FindServerByFqdn(String serverFqdn)
   at Microsoft.Exchange.Data.Directory.SystemConfiguration.ADSystemConfigurationSession.FindLocalServer()
   at Microsoft.Exchange.Transport.LocalServerConfiguration.c__DisplayClass2.b__0()
   at Microsoft.Exchange.Data.Directory.ADNotificationAdapter.RunADOperation(ADOperation adOperation, Int32 retryCount)
   --- End of inner exception stack trace ---
   at Microsoft.Exchange.Data.Directory.ADNotificationAdapter.RunADOperation(ADOperation adOperation, Int32 retryCount)
   at Microsoft.Exchange.Data.Directory.ADNotificationAdapter.TryRunADOperation(ADOperation adOperation, Int32 retryCount).
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