Hi
Currently migrating Exchange 2010 to 2013. Randomly receiving this bounce message.
Remote Server returned '554 5.2.0 STOREDRV.Deliver.Exception:NotSupportedWithServerVersionException; Failed to process message due to a permanent exception with message The mailbox of user xxx@yyy.com that is located on a server that is running version 14 can't be opened on a server that is running version 15.
Any idea what may be causing this?
Thanks
Irfan
Irfan Goolab SALES ENGINEER (Microsoft UC) MCP, MCSA, MCTS, MCITP, MCT