Postfix中需要注意的几个规则(发信者的身份验证)

smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unknown_sender_domain, reject_non_fqdn_sender, reject_non_fqdn_recipient, reject_unknown_recipient_domain, reject_unauth_pipelining,  eject_unauth_destination, permit

# for senders local
smtpd_sender_login_maps = mysql:/etc/postfix/mysql_virtual_alias_user_maps.cf, mysql:/etc/postfix/mysql_virtual_user_maps.cf
smtpd_reject_unlisted_sender = yes
smtpd_sender_restrictions = reject_sender_login_mismatch, reject_authenticated_sender_login_mismatch, reject_unauthenticated_sender_login_mismatch

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mysql:/etc/postfix/mysql_virtual_alias_user_maps.cf
mysql:/etc/postfix/mysql_virtual_user_maps.cf
本地接收的邮件地址列表。

实现的功能：

来源                目的         条件
From: 本地域        To: 任何地址  必须认证且验证用户和From:必须一致
From: 任何非本地地址 To: 本地地址  无需认证
From: 任何非本地     To: 任何地址  拒绝