aliyun ECS服務器(centos7.2)經過mail命令發送郵件，使用465端口發送

yum install mailx

vi /etc/mail.rc
set from=test@163.com
set smtp="smtps://smtp.163.com:465"
set smtp-auth-user=test@163.com
set smtp-auth-password=xxxxxxxx
set smtp-auth=login
set ssl-verify=ignore
set nss-config-dir=/root/.certs

#smtp-auth-password的密碼是qq郵箱裏面設置的第三方登陸密碼

#建立證書
mkdir -p /root/.certs/
echo -n | openssl s_client -connect smtp.163.com:465 | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p' > ~/.certs/163.crt #向163請求證書
certutil -A -n "GeoTrust SSL CA" -t "C,," -d ~/.certs -i ~/.certs/163.crt #添加一個證書到證書數據庫中
certutil -A -n "GeoTrust Global CA" -t "C,," -d ~/.certs -i ~/.certs/163.crt #添加一個證書到證書數據庫中
certutil -L -d /root/.certs ##列出目錄下證書
#信任證書
certutil -A -n "GeoTrust SSL CA - G3" -t "Pu,Pu,Pu" -d ./ -i 163.crt

測試：
mail -s "test" xxx@qq.com < /root/log