Short description of SPAMfighter SMTP Anti Spam Server 2.6.2: SPAMfighter SMTP Anti Spam Server, is the easy-to-use anti-spam solution for Microsoft Windows Servers. SPAMfighter SMTP Anti Spam Server delivers instant spam protection and is powered by the SPAMfighter Server, which is updated by the SPAMfighter community of millions of users across the globe. SEM delivers instant spam protection with no configuration or maintenance what so ever.