Exchange and Outlook syncing slow
We've recently made the move from Exchange 2007 to Exchange 2013 and despite a few hiccups, everything seems to have gone across ok.
However, we've recently started getting reports from staff that emails coming in to Microsoft Outlook is very slow, taking from 15 to 30 mins for new emails to come through. Although if they use Outlook Web App, they find the emails are there straight away.
The Exchange 2013 box is a VM with 6 cores allocated to it and 16gb RAM.
Does anyone have any ideas as to what would be causing Outlook to be syncing rather slowly?