yum -y install sendmail mailx libreport-plugin-mailx sharutils mutt
将下面内容加入到/etc/mail.rc
set ssl-verify=ignore
set nss-config-dir=/root/.certs
set from=zhuhaixiao@17bim.com
set smtp=smtps://smtp.exmail.qq.com:465
set smtp-auth-user=zhuhaixiao@17bim.com
set smtp-auth-password=xxxx
set smtp-auth=login
注释掉 #set bsdcompat
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
systemctl restart sendmail
echo -e "xxx" | mail -s "服务器出现问题" aaaa@qq.com