Hi All,
Please help,
i have recently migrated Exchange 2010 to 2013. All is working very well. but when i migrated my users on 2013 and they sending emails in routine then a mails stuck in queue for some time and then deliver. sometime below errors are shown, but after retry finally emails delivered. It took a lot of time due to which queue is larger and larger. please suggest what can i do
Error:
Last Error: 432 4.3.2 STOREDRV.Storage; mailbox server mapi session limit exceeded; STOREDRV.Deliver.Exception:TooManyObjectsOpenedException.MapiExceptionSessionLimit; Failed to process message due to a transient exception with message Cannot open mailbox (On Exchange 2013)
Error:
Last Error: 432 4.3.2 STOREDRV.Storage; mailbox server is too busy; STOREDRV.Deliver.Exception:StorageTransientException.MapiExceptionRpcServerTooBusy; Failed to process message due to a transient exception with message Cannot open mailbox
Yesterday suddenly our client access server restarts (Dump) due to this Back Pressure
