Ubuntu 系统上使用 QQ 邮箱的 SMTP 服务器发送邮件，msmtp（已验证）

1. 安装 msmtp

sudo apt-get update
sudo apt-get install msmtp
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2 .配置 msmtp

nano ~/.msmtprc
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defaults
auth           on
tls            on
tls_starttls   on
tls_trust_file /etc/ssl/certs/ca-certificates.crt
logfile        ~/.msmtp.log

account        qq
host           smtp.qq.com
port           587
from           your_email@qq.com
user           your_email@qq.com
password       your_password

# Set a default account
account default : qq
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chmod 600 ~/.msmtprc
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3. 测试发送邮件

echo -e "Subject: Test\nThis is a test email." | msmtp -a qq recipient@example.com
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