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·防DOS攻击和安全保护(Denial of Service and Security Protection) ·速率控制(Rate Control) ·IP地址信誉评价(IP Reputation Analysis) ·发送者验证(Sender Authentication) ·接收者认证(Recipient Verification) ·病毒检测(Virus Check) ·策略控制(用户特殊规则)(Policy [User-specified rules]) ·垃圾邮件指纹检测(Spam Fingerprint Check) ·实时意图分析(Intent Analysis) ·图象分析(Image Analysis) ·贝叶斯过滤分析(Bayesian Analysis) ·基于规则的评分技术(Rule-based Scoring)
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