用于收发和处理电子邮件的协议核心没有问题。
The core of the protocol, used for sending, receiving and handling E-mail, are fine.
智能邮件信息处理基于数据包过滤和协议分析处理技术，实现了邮件加密，签名的智能化。
The intelligent E-mail processing, which is based on the packet filtering and protocol analysis, makes the encryption and signature intelligent.
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