Hello,
I have mixed Exchange environment, Exchange 2010 SP3 Rollup5 and Exchange 2013 SP1. CAS service is handeled by Exchange 2013.
Recently I moved some mailboxes from Exchange 2013 to 2010. Since than ActiveSync has not been working for them.
Error message:
Exception message: The mailbox of user aaaaa@bbb.com that is located on a server that is running version 14 can't be opened on a server that is running version 15.
Source: MSExchangeActiveSync
EventID:1008
Other users with mailbox on Exchange 2013 are able to sync. More over, mailboxes that are located on 2010 don't have also sync issue, just those that were moved withnew-moverequest
Thanks for any idea.