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第一代和第二代的过滤技术需要进行大量的匹配运算,对CPU和内存的占用极高,很容易成为处理瓶颈。而最新的防范垃圾邮件的方法是通过行为判断垃圾邮件。
The first-generation and second-generation filtering techniques require a large number of matching operations, high CPU and memory occupancy, it is easy to become a processing bottleneck. The latest way to prevent spam is to determine the spam behavior.