Hi,
So in Exchange 2010, users never were in doubt about when their mailbox was full and not. We are migrating users to 2013 and the behavior here in Outlook has changed. No longer do we get the Yellow bar across in Outlook saying "Your mailbox is full". We just get Send/Receive errors and messages get stuck in Outbox. The Send/Receive errors is a little bit more cryptic from your average end users point of view and the fact that there is a send/receive error is somewhat hidden on the status bar, rather than the added big line of yellow with "Your mailbox is full".
What can we do to get the behavior in Outlook more back to where it was before users were migrated from Exchange 2013?
I'll try to get some screen shots to explain, will edit if I get some good ones.