Email has become a vital communication tool for most businesses. Whether in the office or on the road, communicating internally or closing business with customers, users depend upon email to get their jobs done. Due to the increase in popularity of email as the preferred communication tool, the amount of email traffic is increasing at a very rapid pace. Managing this exponentially growing traffic can sometimes become a daunting task. Along with the growing traffic, the threat of virus and spam is also growing. It is extremely important to design a base messaging infrastructure that is secure, flexible and scalable to meet the availability needs of your organization while safeguarding against any security threats.