Django sendmail SSL错误EOF发生违反协议

我有这个令人讨厌的错误，我无法环绕我的头。现在一直试图解决它。任何帮助将高度appriciated。我将粘贴堆栈跟踪，我还使用Wireshark进行了一些调试，我也会发布它。Django sendmail SSL错误EOF发生违反协议

我试图升级可能与ssl通信没有任何成功的python包。只有在EMAIL_USE_TLS为True时才会出现此问题，并且在调试模式和生产环境中都会发生此问题。我首先想到的可能是SMTP服务器在旧版本的ssl上使用，但事实并非如此。由于Wireshark捕获将告诉ssl似乎已经建立，那么在下一个请求中服务器将意外关闭。

我用的设置是：

EMAIL_BACKEND = 'django.core.mail.backends.smtp.EmailBackend' 

EMAIL_HOST = 'smtp_server' 
EMAIL_PORT = 587 
EMAIL_HOST_USER = 'my_username' 
EMAIL_HOST_PASSWORD = 'my_password' 
EMAIL_USE_TLS = True

我发送邮件时做没什么好奇怪的，这里是代码：

def email_user(self, subject, message, from_email=None, **kwargs): 
    return send_mail(subject, message, from_email, [self.email], **kwargs)

错误堆栈跟踪是：

Traceback (most recent call last): 
    File "C:\Users\Metadeath\Envs\dropin\lib\site-packages\django\core\handlers\exception.py", line 39, in inner 
    response = get_response(request) 
    File "C:\Users\Metadeath\Envs\dropin\lib\site-packages\django\core\handlers\base.py", line 187, in _get_response 
    response = self.process_exception_by_middleware(e, request) 
    File "C:\Users\Metadeath\Envs\dropin\lib\site-packages\django\core\handlers\base.py", line 185, in _get_response 
    response = wrapped_callback(request, *callback_args, **callback_kwargs) 
    File "C:\Users\Metadeath\Envs\dropin\lib\site-packages\django\views\decorators\csrf.py", line 58, in wrapped_view 
    return view_func(*args, **kwargs) 
    File "C:\Users\Metadeath\Envs\dropin\lib\site-packages\django\views\generic\base.py", line 68, in view 
    return self.dispatch(request, *args, **kwargs) 
    File "C:\Users\Metadeath\Envs\dropin\lib\site-packages\rest_framework\views.py", line 477, in dispatch 
    response = self.handle_exception(exc) 
    File "C:\Users\Metadeath\Envs\dropin\lib\site-packages\rest_framework\views.py", line 437, in handle_exception 
    self.raise_uncaught_exception(exc) 
    File "C:\Users\Metadeath\Envs\dropin\lib\site-packages\rest_framework\views.py", line 474, in dispatch 
    response = handler(request, *args, **kwargs) 
    File "C:\Users\Metadeath\Envs\dropin\lib\site-packages\rest_framework\decorators.py", line 52, in handler 
    return func(*args, **kwargs) 
    File "C:\Users\Metadeath\Documents\GitHub\django-dropin\api\views.py", line 18, in register 
    user = serializer.create(serializer.validated_data) 
    File "C:\Users\Metadeath\Documents\GitHub\django-dropin\api\serializers.py", line 86, in create 
    is_sent = user.send_confirmation_email(confirmation_instance=confirmation_instance) 
    File "C:\Users\Metadeath\Documents\GitHub\django-dropin\users\models.py", line 139, in send_confirmation_email 
    is_sent = self.email_user(subject, message, from_email) # Returns the number of delivered emails 
    File "C:\Users\Metadeath\Documents\GitHub\django-dropin\users\models.py", line 132, in email_user 
    return send_mail(subject, message, from_email, [self.email], **kwargs) 
    File "C:\Users\Metadeath\Envs\dropin\lib\site-packages\django\core\mail\__init__.py", line 62, in send_mail 
    return mail.send() 
    File "C:\Users\Metadeath\Envs\dropin\lib\site-packages\django\core\mail\message.py", line 342, in send 
    return self.get_connection(fail_silently).send_messages([self]) 
    File "C:\Users\Metadeath\Envs\dropin\lib\site-packages\django\core\mail\backends\smtp.py", line 100, in send_messages 
    new_conn_created = self.open() 
    File "C:\Users\Metadeath\Envs\dropin\lib\site-packages\django\core\mail\backends\smtp.py", line 64, in open 
    self.connection.starttls(keyfile=self.ssl_keyfile, certfile=self.ssl_certfile) 
    File "c:\users\metadeath\appdata\local\programs\python\python36-32\Lib\smtplib.py", line 770, in starttls 
    server_hostname=self._host) 
    File "c:\users\metadeath\appdata\local\programs\python\python36-32\Lib\ssl.py", line 401, in wrap_socket 
    _context=self, _session=session) 
    File "c:\users\metadeath\appdata\local\programs\python\python36-32\Lib\ssl.py", line 808, in __init__ 
    self.do_handshake() 
    File "c:\users\metadeath\appdata\local\programs\python\python36-32\Lib\ssl.py", line 1061, in do_handshake 
    self._sslobj.do_handshake() 
    File "c:\users\metadeath\appdata\local\programs\python\python36-32\Lib\ssl.py", line 683, in do_handshake 
    self._sslobj.do_handshake() 
ssl.SSLEOFError: EOF occurred in violation of protocol (_ssl.c:749)

Wireshark capture for client and smtp server when establishing ssl connection

感谢您的帮助！

来源

2017-08-07 LanfeaR

证书有问题，这是承载SMTP服务器的公司，他们的问题确实发生在某些Python和一些PHP模块上。我怀疑它必须是我拥有的openSSL版本（OpenSSL 1.0.2j）。现在它解决了，所以这个线程可能会被关闭。

如果有其他人遇到此问题，请联系您的SMTP主机公司，他们可能会为您提供不同的中继。

祝你好运！

来源

2017-08-09 17:56:17 LanfeaR

Django sendmail SSL错误EOF发生违反协议

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