无法使用 gmail 通过 python 发送电子邮件 - smtplib.SMTPException：服务器不支持 SMTP AUTH 扩展

Posted 2023-03-15

【中文标题】无法使用 gmail 通过 python 发送电子邮件 - smtplib.SMTPException：服务器不支持 SMTP AUTH 扩展

【英文标题】：Cant send email via python using gmail - smtplib.SMTPException: SMTP AUTH extension not supported by server

【发布时间】：2013-11-14 21:58:00

【问题描述】：

我只想在 python 中发送一封带有附件的电子邮件

import smtplib, os
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

def send_mail(send_from, send_to, subject, text, files=[], server="localhost"):
    assert type(send_to)==list
    assert type(files)==list

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

    msg.attach( MIMEText(text) )

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

    smtp = smtplib.SMTP('smtp.gmail.com:587')
    smtp.login('[e-mail]','fu')
    smtp.sendmail(send_from, send_to, msg.as_string())
    smtp.close()

ATTACHMENTS = ['/tmp/2013-11-04-test.csv']
send_from=['[e-mail]']
send_to=['[e-mail]']
subject='adfadfadf'
text = 'adfadfadf'
send_mail(send_from, send_to, subject, text, files=ATTACHMENTS)

我如何进行身份验证？我必须提供用户名和密码。怎么样？

Traceback (most recent call last):
  File "/home/ubuntu/workspace/miliza-devops/classes/utilities.py", line 133, in <module>
    send_mail(send_from, send_to, subject, text, files=ATTACHMENTS)
  File "/home/ubuntu/workspace/miliza-devops/classes/utilities.py", line 124, in send_mail
    smtp.login('[e-mail]','fu')
  File "/usr/lib/python2.7/smtplib.py", line 576, in login
    raise SMTPException("SMTP AUTH extension not supported by server.")
smtplib.SMTPException: SMTP AUTH extension not supported by server.

【问题讨论】：

Trying to send email (Gmail as mail provider) using Python 的可能重复项

【参考方案1】：

您需要在登录前致电starttls()：

smtp = smtplib.SMTP('smtp.gmail.com:587')
smtp.starttls()
smtp.login('[e-mail]', 'fu')

另外，您的send_from 应该是str，而不是list：

send_from='[e-mail]'

注意smtp.starttls() 隐式调用smtp.ehlo()：

如果此会话之前没有 EHLO 或 HELO 命令，则此方法首先尝试 ESMTP EHLO。 https://docs.python.org/2/library/smtplib.html#smtplib.SMTP.starttls

【参考方案2】：

在 gmail 上，您还必须在 smtp.starttls() 之前提供 smtp.ehlo() 这也是How to send an email with Gmail as provider using Python?的副本