先修改/etc/s-nail.rc中来添加外部SMTP服务器如下：
set from=zpmail@wp.cpxiang.tech set smtp="smtps://smtp.qq.com:465" set smtp-auth=login set smtp-auth-user=1324928751 set smtp-auth-password=<授权码>
尝试发送
echo "nihao" | mail -s "test" 1324928751@qq.com
Ubuntu通过mail发送邮件
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ECS-centos:https://www.cnblogs.com/javabg/p/10406040.html
ubuntu18.04+上无法直接安装heirloom-mailx，需要添加软件源:
sudo vi /etc/apt/sources.list
写入:
deb http://cz.archive.ubuntu.com/ubuntu xenial main universe
安装heirloom-mailx:
sudo apt-get update
sudo apt install heirloom-mailx
test:
echo “邮件内容” | s-nail -s “邮件主题” 1324928751@qq.com
cat access.log | awk ‘$1~/188.131.146.160/{print $1,$4,$5,$6,$9,$12,$13,$14,$15,$16,$17,$18,$19,$20,$21,$22,$23}’