安装

sudo apt install -y mailutils ssmtp

编辑 /etc/ssmtp/ssmtp.conf

[email protected]
mailhub=smtp.qiye.aliyun.com:465
hostname=s2
TLS_CA_FILE=/etc/ssl/certs/ca-certificates.crt
UseTLS=Yes
UseSTARTTLS=Yes
[email protected]
AuthPass=******************************
AuthMethod=LOGIN
FromLineOverride=yes

为本地用户名创建别名（可选）

编辑 /etc/ssmtp/revaliases

root:[email protected]:smtp.qiye.aliyun.com:25

测试邮件发送

echo -e 'Subject: test\n\nTesting ssmtp' | sendmail -v [email protected]