With the rapid increase in the volume of email comes the need to manage messages, both incoming and outgoing. The primary challenges are security violations, bandwidth waste and user information overload. While most email software clients enable users to create rules for screening sent and received messages, a well managed server-side filtering system provides many additional benefits. Among the positives of server-side filtering are uniform enforcement of company email policies, diminished threats from viruses, reduction of spam, easy routing of single emails to multiple users, the rejection of unwanted messages and better use of bandwidth. The bottom line is more effective deployment of the enterprise or service provider email server..