Django 尝试注册用户时，ConnectionRefusedError位于/accounts/register/

伙计们。在我的网站上注册用户时，我会遇到这个错误。我是初学者。我也没有收到激活电子邮件。请参阅下面的代码。你面对过这样的问题吗？我怎样才能解决它？我试着用不同的方法，但没有任何帮助

在我的应用程序中的my utilities.py中

from django.template.loader import render_to_string
from django.core.signing import Signer
from bboard.settings import ALLOWED_HOSTS


signer = Signer()

def send_activation_notification(user):
    if ALLOWED_HOSTS:
        host = 'http://' + ALLOWED_HOSTS[0]
    else:
        host = 'http://localhost:8000'
    context = {'user':user, 'host':host, 'sign':signer.sign(user.username)}
    subject = render_to_string('email/activation_letter_subject.txt', context)
    body_text = render_to_string('email/activation_letter_body.txt', context)
    user.email_user(subject, body_text)

in views.py

    def user_activate(request, sign):
    try:
        username = signer.unsign(sign)
    except BadSignature:
        return render(request, 'main/bad_signature.html')
    user = get_object_or_404(AdvUser, username=username)
    if user.is_activated:
        template = 'main/user_is_activated.html'
    else:
        template = 'main/activation_done.html'
        user.is_active = True
        user.is_activated = True
        user.save()
    return render(request, template)

在settings.py中

EMAIL_BACKEND = 'django.core.mail.backends.smtp.EmailBackend'
EMAIL_HOST = 'localhost'
EMAIL_PORT = 25
EMAIL_HOST_USER = ''
EMAIL_HOST_PASSWORD = ''
EMAIL_USE_TLS = False
DEFAULT_FROM_EMAIL = 'webmaster@localhost'

ALLOWED_HOSTS = [
    '127.0.0.1',
]

如果我还需要提供什么，请告诉我

我看到了这个错误

ConnectionRefusedError at /accounts/register/
[WinError 10061] No connection could be made because the target machine 
actively refused it
Request Method: POST
Request URL:    http://127.0.0.1:8000/accounts/register/
Django Version: 3.1
Exception Type: ConnectionRefusedError
Exception Value:    
[WinError 10061] No connection could be made because the target machine 
actively refused it
Exception Location: C:\Users\Syubebayev 
Madiyar\AppData\Local\Programs\Python\Python38-32\lib\socket.py, line 796, in 
create_connection
Python Executable:  C:\Users\Syubebayev 
Madiyar\AppData\Local\Programs\Python\Python38-32\python.exe
Python Version: 3.8.0
Python Path:    
['C:\\Users\\Syubebayev Madiyar\\Desktop\\доска объявлений - сайт\\bboard',
 'C:\\Users\\Syubebayev '
 'Madiyar\\AppData\\Local\\Programs\\Python\\Python38-32\\python38.zip',
 'C:\\Users\\Syubebayev '
 'Madiyar\\AppData\\Local\\Programs\\Python\\Python38-32\\DLLs',
 'C:\\Users\\Syubebayev '
 'Madiyar\\AppData\\Local\\Programs\\Python\\Python38-32\\lib',
 'C:\\Users\\Syubebayev Madiyar\\AppData\\Local\\Programs\\Python\\Python38- 
  32',
 'C:\\Users\\Syubebayev '
 'Madiyar\\AppData\\Roaming\\Python\\Python38\\site-packages',
 'C:\\Users\\Syubebayev '
 'Madiyar\\AppData\\Local\\Programs\\Python\\Python38-32\\lib\\site- 

包裹'， 'C:\Users\Syubebayev' 'Madiyar\AppData\Local\Programs\Python\Python38-32\lib\site- 程序包\win32'， 'C:\Users\Syubebayev' 'Madiyar\AppData\Local\Programs\Python\Python38-32\lib\site packages\win32\lib'， 'C:\Users\Syubebayev' 'Madiyar\AppData\Local\Programs\Python\Python38-32\lib\site- 软件包\Pythonwin']

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服务器时间：2020年10月3日星期六10:53:26+0000检查端口25处的本地主机上是否有SMTP运行。如果不是，则需要使用有效的SMTP设置

调试的第一个好方法是将电子邮件后端切换到控制台：