企业过期域名被抢注

import dns.resolver
import smtplib
from email.mime.text import MIMEText
from datetime import datetime, timedelta

def check_domain_expiration(domain):
    try:
        answers = dns.resolver.resolve(domain, 'SOA')
        for rdata in answers:
            expiration_date = rdata.refresh
            current_date = datetime.now()
            if expiration_date - current_date < timedelta(days=30):
                send_reminder_email(domain, expiration_date)
    except Exception as e:
        print(f"Error checking domain {domain}: {e}")

def send_reminder_email(domain, expiration_date):
    msg = MIMEText(f"Domain {domain} will expire on {expiration_date}. Please renew it.")
    msg['Subject'] = f"Domain Expiration Reminder: {domain}"
    msg['From'] = 'your_email@example.com'
    msg['To'] = 'admin@example.com'

    smtp_server = smtplib.SMTP('smtp.example.com')
    smtp_server.send_message(msg)
    smtp_server.quit()

# Example usage
check_domain_expiration('example.com')