腾讯云服务器屏蔽了25端口

import smtplib
from email.mime.text import MIMEText

msg = MIMEText('This is the body of the email')
msg['Subject'] = 'Subject'
msg['From'] = 'sender@example.com'
msg['To'] = 'recipient@example.com'

smtp_server = 'smtp.example.com'
smtp_port = 465
username = 'your_username'
password = 'your_password'

with smtplib.SMTP_SSL(smtp_server, smtp_port) as server:
    server.login(username, password)
    server.sendmail('sender@example.com', ['recipient@example.com'], msg.as_string())

import smtplib
from email.mime.text import MIMEText

msg = MIMEText('This is the body of the email')
msg['Subject'] = 'Subject'
msg['From'] = 'sender@example.com'
msg['To'] = 'recipient@example.com'

smtp_server = 'smtp.example.com'
smtp_port = 587
username = 'your_username'
password = 'your_password'

with smtplib.SMTP(smtp_server, smtp_port) as server:
    server.starttls()
    server.login(username, password)
    server.sendmail('sender@example.com', ['recipient@example.com'], msg.as_string())