| 一款很不错的开源反垃圾邮件软件， 邮件反病毒统计代理，DSPAM 是一个Unix下邮件服务器的反病毒统计代理，它伪装成邮件服务器的本地投递代理，有效地过滤垃圾邮件使用的是组合模糊手法，专门算法，统计分析。其结果 是免维护，自学反垃圾邮件工具。公司的DSPAM取得了超出99.9％的准确真实世界的成功率不到1的错误0.01％的机会。
Dspam - Community Driven Antispam Filter
DSPAM is a scalable and open-source content-based spam filter designed for multi-user enterprise systems. On a properly configured system, many users experience results between 99.5% - 99.95%, or one error for every 200 to 2000 messages. DSPAM supports many different MTAs and can also be deployed as a stand-alone SMTP appliance. For developers, the DSPAM core engine (libdspam) can be easily incorporated directly into applications for drop-in filtering
DSPAM has been implemented on many large and small scale systems with the largest being reported at about 350,000 mailboxes.