以下是我的代码及返回信息，163和qq的都尝试过但都是验证错误，密码什么的我肯定是没有输错的。
代码：

#-*- encoding: utf-8 -*-
import os, sys
import smtplib
from smtplib import SMTP_SSL
from email.header import Header
from email.mime.text import MIMEText
 
mailInfo = {
    "from": "xxx@qq.com",
    "to": "yyy@163.com",
    "hostname": "smtp.qq.com",
    "username": "xxx@qq.com",
    "password": "*********",
    "mailsubject": "this is test",
    "mailtext": "hello, this is send mail test.",
    "mailencoding": "utf-8"
}
         
if __name__ == '__main__':
    smtp = SMTP_SSL(mailInfo["hostname"])
    smtp.set_debuglevel(1)
    smtp.ehlo(mailInfo["hostname"])
    smtp.login(mailInfo["username"],mailInfo["password"])
     
    msg = MIMEText(mailInfo["mailtext"],"text",mailInfo["mailencoding"])
    msg["Subject"] = Header(mailInfo["mailsubject"],mailInfo["mailencoding"])
    msg["from"] = mailInfo["from"]
    msg["to"] = mailInfo["to"]
    smtp.sendmail(mailInfo["from"], mailInfo["to"], msg.as_string())
     
    smtp.quit()

返回错误：

send: 'ehlo smtp.qq.com\r\n'
reply: '250-smtp.qq.com\r\n'
reply: '250-PIPELINING\r\n'
reply: '250-SIZE 73400320\r\n'
reply: '250-AUTH LOGIN PLAIN\r\n'
reply: '250-AUTH=LOGIN\r\n'
reply: '250-MAILCOMPRESS\r\n'
reply: '250 8BITMIME\r\n'
reply: retcode (250); Msg: smtp.qq.com
PIPELINING
SIZE 73400320
AUTH LOGIN PLAIN
AUTH=LOGIN
MAILCOMPRESS
8BITMIME
send: 'AUTH PLAIN AGx************************************vZA==\r\n'
reply: '535 Authentication failed\r\n'
reply: retcode (535); Msg: Authentication failed
Traceback (most recent call last):
  File "C:\Users\Daniel\Desktop\mail1.py", line 23, in <module>
    smtp.login(mailInfo["username"],mailInfo["password"])
  File "C:\Python27\lib\smtplib.py", line 622, in login
    raise SMTPAuthenticationError(code, resp)
smtplib.SMTPAuthenticationError: (535, 'Authentication failed')

拜托大家帮忙解决下我的问题！！！