E-Mail Threat Prevention

As a preemptive email security service that sits between the Internet and our customer’s email gateway, Postini prevents email threats from ever reaching your network. Postini is a recognized leader in effectively stopping spam, phishing, viruses, directory harvest attacks and other email threats through its patented, multi-layer technology. No other vendor provides such wide scope and in-depth protection from email intrusions.

Anti-Spam

Postini is proven to be one of the most effective solutions for eliminating spam. In a comparison test of leading anti-spam products as reported in Network World magazine, December 2004, Postini rates the highest for anti-spam effectiveness---with the best overall balance of accuracy (97%) and false positives (.08%).

Anti-Virus

As the incidence and severity of email viruses has nearly tripled in past year, Postini consistently demonstrates superior anti-virus capabilities, blocking more than 1 billion viruses in 2004 alone. Postini's multi-layer antivirus protection coupled with its patent-pending preEMPT technology protects your email system from the initial outbreak of a virus---its zero hour---until an antiviral signature is available. Thus, Postini prevents viruses from ever getting inside your network, and keeps viruses such as netsky and bagle from infecting PCs and turning them into zombies that can be taken over to send even more spam.

DHA Prevention

Directory harvest attacks not only “lead and fuel” spam attacks, they sap mail server performance and affect quality of service. Postini performs real time inspection of every IP address that connects to its service. Patented IP analysis based on more than two-dozen variables that determine if the “behavior” of the message exhibits the characteristics of a DHA, spam, or virus, enables Postini to block connections without seeing the actual message. Processing more than 450 million inbound SMTP connections every day from 10 to15 million distinct IP addresses, Postini currently blocks more than half of SMTP connections and then applies rigorous content filtering for the balance of messages.

Anti-Phishing

Postini blocks phishing attacks by applying several hundred spam filtering rules targeted specifically at phishing techniques. Postini routinely blocks more than 400,000 phishing attempts each day.