如果域名到期不续费会怎样

import whois
import smtplib
from email.mime.text import MIMEText

def check_domain_expiration(domain):
    w = whois.whois(domain)
    expiration_date = w.expiration_date
    if expiration_date:
        return expiration_date
    else:
        return None

def send_reminder_email(email, domain, expiration_date):
    msg = MIMEText(f"域名 {domain} 将在 {expiration_date} 到期，请及时续费。")
    msg['Subject'] = '域名到期提醒'
    msg['From'] = 'your_email@example.com'
    msg['To'] = email

    smtp_server = 'smtp.example.com'
    smtp_port = 587
    smtp_username = 'your_email@example.com'
    smtp_password = 'your_password'

    with smtplib.SMTP(smtp_server, smtp_port) as server:
        server.starttls()
        server.login(smtp_username, smtp_password)
        server.sendmail(smtp_username, email, msg.as_string())

domain = 'example.com'
email = 'user@example.com'

expiration_date = check_domain_expiration(domain)
if expiration_date and expiration_date < datetime.now() + timedelta(days=30):
    send_reminder_email(email, domain, expiration_date)