修改main.cf配置文件
增加：
smtpd_client_restrictions = check_client_access cidr:/var/packages/MailPlus-Server/target/etc/access/smtpd_client_blacklist
smtpd_delay_reject = no
配置文件增加拦截和放行：
127.0.0.1 ok
128.116.233.216 reject
修改main.cf配置文件
增加：
smtpd_client_restrictions = check_client_access cidr:/var/packages/MailPlus-Server/target/etc/access/smtpd_client_blacklist
smtpd_delay_reject = no
配置文件增加拦截和放行：
127.0.0.1 ok
128.116.233.216 reject
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