空壳邮件

在真实主机上,关闭火墙

hostnamectl  set-hostname  www.westos.com

vim /etc/postfix/main.cf

76 myhostname = www.westos.com
83 mydomain = westos.com
99 myorigin = westos.com
116 inet_interfaces = all
164 mydestination = $myhostname, $mydomain, localhost

systemctl  restart  postfix

在空壳主机上,stop firewalld

hostnamectl  set-hostname  nullmail.example.com

vim /etc/postfix/main.cf

76 myhostname = nullmail.example.com
83 mydomain = example.com
99 myorigin = westos.com
116 inet_interfaces = all
164 mydestination =
316 relayhost = 172.25.254.218
systemctl restart postfix
测试
在空壳主机上mail root

在真实主机上查看邮件信息