关闭所有邮件服务
一、生产一系列证书
mkdir ~/.certs #生成证书 echo -n | openssl s_client -connect smtp.163.com:465 | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p' > ~/.certs/mail.crt certutil -A -n "GeoTrust SSL CA" -t "C,," -d ~/.certs -i ~/.certs/mail.crt certutil -A -n "GeoTrust Global CA" -t "C,," -d ~/.certs -i ~/.certs/mail.crt
certutil -A -n "GeoTrust SSL CA - G3" -t "Pu,Pu,Pu" -d ~/.certs -i ~/.certs/mail.crt #查看 certutil -L -d /root/.certs
二、配置mail.rc文件
[root@iZhp3a7sejwabcxoz89b1yZ ~]# cat /etc/mail.rc set from=xxxx@163.com set smtp=smtps://smtp.163.com:465 set smtp-auth-user=xxx@163.com set smtp-auth-password=xxxxxxxxxxxxx set smtp-auth=login set ssl-verify=ignore set nss-config-dir=/root/.certs
三、测试
yum install -y exim mailx systemctl start exim.service mailx -s 'aa' xxxx@163.com </etc/hosts
