SMTP发送邮件

用笔记本电脑，通过访问阿里云服务器的端口（穿透）登录到树莓派系统

在虚拟机编写一个守护进程程序，每隔一分钟，利用SMTP协议向你的某个邮箱发送一份内容为 “守护进程正在运行中…”的邮件

import smtplib
import time
import os
import sys
import logging
from email.mime.text import MIMEText# 配置日志
logging.basicConfig(filename='/tmp/daemon.log', level=logging.INFO)def daemonize():try:pid = os.fork()if pid > 0:sys.exit(0)os.setsid()pid = os.fork()if pid > 0:sys.exit(0)os.chdir('/')sys.stdout.flush()sys.stderr.flush()with open(os.devnull, 'r') as si, open(os.devnull, 'a+') as so, open(os.devnull, 'a+') as se:os.dup2(si.fileno(), sys.stdin.fileno())os.dup2(so.fileno(), sys.stdout.fileno())os.dup2(se.fileno(), sys.stderr.fileno())except Exception as e:logging.error(f"Daemonize failed: {e}")sys.exit(1)def send_email():smtp_server = 'smtp.gmail.com'  # 替换为真实服务器port = 587sender = 'your_email@gmail.com'  # 替换为真实邮箱password = 'your_app_password'   # 应用专用密码receiver = 'receiver@example.com'msg = MIMEText('Daemon test email sent every minute.')msg['Subject'] = 'Daemon Test'msg['From'] = sendermsg['To'] = receivertry:with smtplib.SMTP(smtp_server, port) as server:server.starttls()server.login(sender, password)server.send_message(msg)logging.info("Email sent successfully")except Exception as e:logging.error(f"Email error: {e}")def main():daemonize()logging.info("Daemon started")while True:send_email()time.sleep(60)if __name__ == "__main__":main()