centos7怎么使用postfix发送邮件

[root@mail ~]# mkdir /root/.certs

[root@mail ~]# echo -n | openssl s_client -connect smtp.163.com:465 | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p' > ~/.certs/163.crt

[root@mail ~]# certutil -A -n "GeoTrust Global CA" -t "C,," -d ~/.certs -i ~/.certs/163.crt

[root@mail ~]# certutil -A -n "GeoTrust SSL CA" -t "C,," -d ~/.certs -i ~/.certs/163.crt

[root@mail ~]# certutil -L -d /root/.certs

[root@mail ~]# certutil -A -n "GeoTrust SSL CA - G3" -t "Pu,Pu,Pu" -d ~/.certs/ -i ~/.certs/163.crt

[root@mail ~]# vim /etc/mail.rc

set ssl-verify="ignore"

set smtp-auth="login"

set from="mds302587@163.com"

set smtp="smtps://smtp.163.com:465"

set smtp-auth-user="mds302587@163.com"

set smtp-auth-password="123456"

set nss-config-dir="/root/.certs"

[root@mail ~]# systemctl restart postfix

[root@mail ~]# echo "This is a test mail" | mail -s '邮件测试' 452666750@qq.com