SPAMfighter Domino Module (SDM) is the easy-to-use anti-spam/virus solution for Lotus Domino and Lotus Notes. SDM delivers instant spam protection and integrates perfectly with Lotus Domino allowing for easy installation and administration. As an email arrives at the Domino SMTP server, SDM makes a unique encrypted signature for each message and sends it to the SPAMfighter Server for evaluation. SPAMfighter is Microsoft Gold Certified Partner.