Python SMTPAuthenticationError

Question

直到昨天我用 python 发送电子邮件都没有问题，现在由于某种原因我收到以下错误。

Traceback (most recent call last):
  File "main.py", line 20, in <module>
    mail(name)
  File "/home/runner/mail.py", line 26, in mail
    smtpserver.login(gmail_user, gmail_password)
  File "/usr/local/lib/python3.7/smtplib.py", line 730, in login
    raise last_exception
  File "/usr/local/lib/python3.7/smtplib.py", line 721, in login
    initial_response_ok=initial_response_ok)
  File "/usr/local/lib/python3.7/smtplib.py", line 642, in auth
    raise SMTPAuthenticationError(code, resp)
smtplib.SMTPAuthenticationError: (535, b'5.7.8 Username and Password not accepted. Learn more at\n5.7.8  https://support.google.com/mail/?p=BadCredentials p17sm967082ils.71 - gsmtp')

我已经使用以下代码大约 4 个月了，没有遇到任何问题。这是我用来访问 gmail 的代码：

import smtplib

def mail(name):
    gmail_user = 'email@gmail.com'
    gmail_password = 'password'

    emaillist = ['email@email.com']

    for email in emaillist:
        sent_from = gmail_user
        to = email
        subject = 'Subject'

        body = "Body"

        email_text = '''\
        From: %s
        To: %s
        Subject: %s

        %s
        '''%(sent_from, to, subject, body)

        try:
            server = smtplib.SMTP_SSL('smtp.gmail.com', 465)
            server.ehlo()
            server.login(gmail_user, gmail_password)
            server.sendmail(sent_from, to, body)
            server.close()

            print('Email sent!')
        except:
            print('Oops!')

我已尝试更改 gmail 中使用安全性较低的应用程序、启用 IMAP 并更改电子邮件帐户的密码。到目前为止，解决问题还没有运气。任何帮助将不胜感激。

Answer 1

Google 已增加其安全政策，我邀请您阅读以下部分中的此链接：不太安全的应用和您的 Google 帐户，然后像下面这样打开链接（不太安全的应用访问）

https://support.google.com/accounts/answer/6010255

稍后允许访问不安全的应用程序：是

Answer 2

这是我的代码，您需要将 smtp.gmail.com 端口设置为 587

在 sendMail 中，我们有 警报通知 是主题和 有人进入房间，图片附件 是正文，如果需要，我们也有附件 [" /home/pi/webcam.jpg"]

代码：

#!/usr/bin/env python
import smtplib
from email.MIMEMultipart import MIMEMultipart
from email.MIMEBase import MIMEBase
from email.MIMEText import MIMEText
from email.Utils import COMMASPACE, formatdate
from email import Encoders
import os

USERNAME = "___YOUR SMTP EMAIL HERE___"
PASSWORD = "__YOUR SMTP PASSWORD HERE___"

def sendMail(to, subject, text, files=[]):
    assert type(to)==list
    assert type(files)==list

    msg = MIMEMultipart()
    msg['From'] = USERNAME
    msg['To'] = COMMASPACE.join(to)
    msg['Date'] = formatdate(localtime=True)
    msg['Subject'] = subject

    msg.attach( MIMEText(text) )

    for file in files:
        part = MIMEBase('application', "octet-stream")
        part.set_payload( open(file,"rb").read() )
        Encoders.encode_base64(part)
        part.add_header('Content-Disposition', 'attachment; filename="%s"'
                       % os.path.basename(file))
        msg.attach(part)

    server = smtplib.SMTP('smtp.gmail.com:587')
    server.ehlo_or_helo_if_needed()
    server.starttls()
    server.ehlo_or_helo_if_needed()
    server.login(USERNAME,PASSWORD)
    server.sendmail(USERNAME, to, msg.as_string())
    server.quit()

sendMail( ["___EMAIL TO RECEIVE THE MESSAGE__"],
        "Alarm notification",
        "Someone has entered the room, picture attached",
        ["/home/pi/webcam.jpg"] )