We offer 2 types of Anti-Virus and Spam Filtering solutions for dealing with unwanted/unsollicited E-mails.
- Free filtering service as part of our standard hosting.
This is based on the well know Spam Assassin and Mail Scanner. Per e-mail user there are options that can be set for which level scanning is prefered. - Premium Scanning Services by Postini:
Only Postini provides the powerful combination of patented content management and sophisticated content analysis to block viruses, spam, phishing, IM worms, directory harvest attacks and other email and IM threats.
Virus/Worm Detection: As the incidence and severity of email viruses and IM worms has grown over the past year, Postini consistently demonstrates superior anti-virus and anti-worm detection capabilities. Postini provides enhanced anti-virus service with multiple layered protection from partners such as McAfee and Authentium anti-virus filters, and IMlogic instant message filters.
Spam Blocking: 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, Postini rates the highest for anti-spam effectiveness—with the best overall balance of accuracy (97%) and very few false positives (.08%).
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.
Connection Management: Spammers have been launching directory harvest attacks (DHAs) designed to net lists of valid email addresses that can be used to send more spam or sell to other spammers. Known as the “silent killers,” they sap mail server performance and affect quality of service. To prevent the threat of DHAs and Denial of Service attacks, Postini performs real time inspection of every IP address that connects to its service. This patented Sender Behavior Analysis™ determines if the “behavior” of the message exhibits the characteristics of a DHA, spam, or virus, enabling Postini to block connections without seeing the actual message. Processing more than 500 million inbound SMTP connections every day from 10 to 15 million distinct IP addresses, Postini currently blocks more than half of SMTP connections and then applies rigorous content filtering for the balance of messages
