目前我们以Postfix例 编辑Postfix的主配置文档mail.cf 增加

check_policy_service inet:127.0.0.1:10030

到smtpd_recipient_restrictions配置选项中

smtpd_recipient_restrictions =
    permit_mynetworks,
    permit_sasl_authenticated,
    reject_non_fqdn_hostname,
    reject_non_fqdn_sender,
    reject_non_fqdn_recipient,
    reject_unauth_destination,
    reject_unauth_pipelining,
    reject_invalid_hostname,
    check_policy_service inet:127.0.0.1:10030

重新载入Postfix

/etc/init.d/postfix reload