Changes to email services
Up to the end of March 2014 I.T. Services have been using the FOPE service to scan incoming and outgoing UCC email. FOPE is being discontinued and replaced by EOP (Exchange Online Protection).
Over the first two weeks of April 2014 we have changed the routing of (nearly) all incoming and outgoing UCC email to go through EOP.
http://technet.microsoft.com/en-us/library/dn305011(v=exchg.150).aspx lists the differences between the two services. But email users should not notice any change.