Messaging - particularly email, instant messaging, Web collaboration, and VoIP - has become critical to the operation of most enterprises. Consequently, providing messaging services is expensive.
This white paper offers an unbiased discussion and analysis of the key elements decision makers should consider as they evaluate options for managing and securing their messaging systems. It provides you with key benefits of using a hosted or managed messaging service and questions you should ask your internal managers and vendors when evaluating a messaging security solution.
Security Research Library 
