centos 7 安装 mail

yum install -y sendmail

将下面内容粘贴到/etc/mail.rc中

set ssl-verify=ignore
set nss-config-dir=/root/.certs
set from=[email protected]
set smtp=smtps://smtp.exmail.qq.com:465
set smtp-auth-user=[email protected]
set smtp-auth-password=xxxx
set smtp-auth=login

逐行执行下面指令

cd /root
mkdir .certs
echo -n | openssl s_client -connect smtp.exmail.qq.com:465 | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p' > ~/.certs/qq.crt
certutil -A -n "GeoTrust SSL CA" -t "C,," -d ~/.certs -i ~/.certs/qq.crt
certutil -A -n "GeoTrust Global CA" -t "C,," -d ~/.certs -i ~/.certs/qq.crt
certutil -L -d /root/.certs
cd /root/.certs/
certutil -A -n "GeoTrust SSL CA - G3" -t "Pu,Pu,Pu" -d ./ -i qq.crt

重启sendmail服务

systemctl restart sendmail

发送邮件

mail -v -s "test" [email protected]< /data/content.txt