http://ilantz.com/2010/07/12/msexchangerepl-2147-msexchangerepl-2104-msexchangerepl-2127-occurring-on-windows-2008-or-windows-2008-r2-with-exchange-2007-cluster-continuous-replication-ccr/
MSExchangeRepl 2147 / MSExchangeRepl 2104 / MSExchangeRepl 2127 occurring on Windows 2008 or Windows 2008 R2 with Exchange 2007 Cluster Continuous Replication (CCR)