Your Out of Office setting cannot be displayed, because the server is currently unavailable, try again later.

I need help on my OOF.

Environments:

CoExistent with Exchange 2007 and Exchange 2013.

Problem:

All mailbox users in Exchange 2007 cannot goto "Out of Office" and configure there stuff while mailbox users in Exchange 2013 is working just fine. Autodiscover seems to be working.