I have a customer who's Outlook 2011 is refusing to send emails and sync new emails down. The exchange server is hosted through Office 365. Email works fine through Windows based Outlook and Outlook Web App.
Our first guess is that there is a limit on the file size for cached emails. If so, what is it? This file is currently at 14GB, and according to http://en.wikipedia.org/wiki/Personal_Storage_Table#Entourage_and_Outlook_for_Mac (final line of the section) the limit is 13GB, although I am unsure whether this is for importing mail files, or the limit of the mail file in general.