我收到了一些网络钓鱼电子邮件,并且发件人:标头仅包含显示名称。例如:
From: Timmy Tester
Postfix 随后发送了电子邮件,但将其主机名附加到显示名称的第一部分/格式错误的发件人标头。因此,收件人收到了带有如下发件人标头的网络钓鱼邮件:
From: [email protected]
(其中 mail.example.com 是我的合法邮件服务器的 FQDN)
所以...不是一个欺骗性的 From: 标头,更像是 Postfix 代表发件人/诈骗者欺骗了 From: 标头。
是否有一个后缀设置可以保留发件人:标题不变,或者更好的是,将该值设置为其他值以警告收件人?
好的,问题正如 michael-hampton 所强调的:
设置:remote_header_rewrite_domain 目前为空。
Postfix always rewrites message headers from local SMTP clients and from the Postfix sendmail command, and appends its own domain to incomplete addresses. The local_header_rewrite_clients parameter controls what SMTP clients Postfix considers local (by default, only local network interface addresses).
Postfix never rewrites message header addresses from remote SMTP clients when the remote_header_rewrite_domain parameter value is empty (the default setting).
Otherwise, Postfix rewrites message headers from remote SMTP clients, and appends the remote_header_rewrite_domain value to incomplete addresses. This feature can be used to append a reserved domain such as "domain.invalid", so that incomplete addresses cannot be mistaken for local addresses.