- You use service accounts to access mailboxes that are hosted on Microsoft Exchange Server 2010.
- The service account tries to access an Exchange Server 2010 mailbox.
- Transient communication errors occur in Active Directory Domain Services (AD DS).
For example, when this issue occurs, BlackBerry users cannot synchronize their mailboxes with the Exchange server.
Additionally, Event ID 2915 is logged in the Application log on the Exchange server. The following is a sample of the event that is logged when this issue occurs:
Source: MSExchange ADAccess
Message: Process Microsoft.Exchange.RpcClientAccess.Service.exe (PID=5372). User 'Sid~DOMAIN\SERVICEACCOUNT~RCA~false' has gone over budget '263' times for component 'RCA' within a one minute period. Info: 'Policy:[Fallback], Parts:MaxConcurrency:262;'. Threshold value: '100'.