Some our key features of email filtering include: Powerful Spam Filtering     Heuristic-based content analysis providing over 95% accuracy End-user flexibility: users can customize own filters Quarantined messages are accessible via a web-based Message Center for review and disposition Real-Time Virus Protection     All message parts are scanned for infected viruses, and infected messages are quarantined in the user's AcmeNet Message Center for review and disposition Built-in protection from new techniques, including message fragments Industry leading McAfee AVERT provides dedicated connection to McAfee virus definition servers, protecting customers from new viruses Proactive SMTP Connection Security     Monitors SMTP traffic on port 25 of the corporate firewall and blocks invalid connection attempts Immediate detection and automated response of Directory Harvest Attacks (DHAs) and other threats Email Delivery Management     Throttling maximizes operating efficiency and throughput of each server Message delivery automatically redirects email flow to fail-over resources