Office 365 - Will spam filtering be done locally or at the campus level?
UW-Madison's Office 365 implementation includes spam/virus scanning services.
Spam filtering will be done at the campus level. If you are currently running spam filters locally, you will not need to do so after migrating to Office 365.
It is recommended that users do not enable any junk/spam filtering at the local client level. But, it is highly recommended that users run anti-virus protection (Symantec Endpoint Protection) on their local machines.