New mailbox if created on Exchange 2013 works fine. But moved users from Ex2k7 to EX2k13 do not works. Here are the errors on the exchange server 2013 IIS logs:
For android -- DevOS:Android_S110_Error:System.ArgumentOutOfRangeException_ADWR
For iphone -- DevOS:iOS+8.1.1+12B436_S110_Error:System.ArgumentOutOfRangeException_As
Exhange 2013 is on Cumulative update CU6
Any clue.