flask-mail发送邮件始终失败

 1 from flask_mail import Mail,Message
 2 from flask import Flask
 3 import os
 4 
 5 app=Flask(__name__)
 6 app.config.update(
 7     DEBUG = True,
 8     MAIL_SERVER=‘smtp.qq.com‘,
 9     MAIL_PROT=25,
10     MAIL_USE_TLS = True,
11     MAIL_USE_SSL = False,
12     MAIL_USERNAME = ‘4@qq.com‘,
13     MAIL_PASSWORD = ‘xxxxxxxx‘,
14     #MAIL_PASSWORD = ‘xxxxxxxx‘,
15     MAIL_DEBUG = True
16 )
17 mail=Mail(app)
18 
19 
20 @app.route(‘/‘)
21 def index():
22 # sender 发送方哈，recipients 邮件接收方列表
23     msg = Message("Hi!This is a test ",sender=‘4@qq.com‘, recipients=[‘3@qq.com‘])
24 # msg.body 邮件正文
25     msg.body = "This is a first email"
26 # msg.attach 邮件附件添加
27 # msg.attach("文件名", "类型", 读取文件）
28 #     with app.open_resource("F:\2281393651481.jpg") as fp:
29 #         msg.attach("image.jpg", "image/jpg", fp.read())
30 
31     mail.send(msg)
32     print ("OK")
33     return "Sent"
34 
35 
36 
37 
38 if __name__==‘__main__‘:
39     app.run(debug=True)