SPAMfighter Exchange module (SEM), is the easy-to-use anti-spam solution for Microsoft Exchange Servers in small and medium-sized businesses. SEM is powered by the SPAMfighter Server, which is updated by the SPAMfighter community of more than 600,000 users from 192 countries/areas. SEM delivers instant spam protection with no configuration or maintenance, to help small and medium businesses that often operate with few or no IT staff.