Postfix的正则expression式为smtpd_command_filter
我的一些用户正在使用Gmail将邮件发送到我们的域名(邮件服务器托pipe在带有Postfix的CentOS 5机器上)。 有时候,但不是所有的时候,他们都会得到类似于以下的反弹: ———- Forwarded message ———- From: Mail Delivery Subsystem <[email protected]> Date: Mon, Aug 19, 2013 at 9:12 AM Subject: Delivery Status Notification (Failure) To: [email protected] Delivery to the following recipient failed permanently: [email protected] Technical details of permanent failure: Google tried to deliver your message, but it was rejected by the server for the […]