邮件黑名单系列文章六十二:IP被TRENDMicro列入黑名单

官网:https://www.ers.trendmicro.com/ 
TrendMicro

IP信誉查询 https://www.ers.trendmicro.com/reputations/index
有一种黑名单叫DUL:Dynamic User List (DUL)
Dynamic User List (DUL) includes IP addresses in dynamic ranges identified by ISPs. Most legitimate mail sources have static IP addresses.
动态用户列表(DUL)
动态用户列表(DUL)包括由ISP标识的动态范围内的IP地址。大多数合法的邮件源都有静态IP地址。

如果同一个发信IP,有多个子域来发,该IP容易被ISP标识为动态IP。从而被如TRENDMicro这样的黑名单机构列入

 

 

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