红帽全球峰会7.8. 保护 Postfix 服务
Postfix 是邮件传输代理(MTA)，其使用简单邮件传输协议(SMTP)在其他 MTA 之间发送电子邮件，并将电子邮件发送给客户端或传输代理。虽然 MTA 可以加密彼此之间的流量，但默认情况下可能不会这样做。您还可以通过将设置改为更安全的值来降低各种攻击的风险。
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- 7.8. 保护 Postfix 服务
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