NGINX 重定向导致“DisallowedHost at /”

Question

我已经在 Azure 上的 CentOS 7 机器上安装了 nginx，并且对其进行了如下配置：

server {
    listen 80;
    server_name mywhateverdomain.com;
    return 301 www.mywhateverdomain.com.br$request_uri;
}

server {
    listen 80;
    server_name www.mywhateverdomain.com.br;
    location / {
        proxy_set_header Host $host;
        proxy_set_header X-Forwarded-Host $host;
        proxy_set_header X-Forwarded-Server $host;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_pass http://127.0.0.1:8080/;
    }
}

但每当我尝试http://mywhateverdomain.com从网络浏览器访问时，都会收到以下消息：

DisallowedHost at /
Invalid HTTP_HOST header: 'mywhateverdomain.com.br'. You may need to add u'mywhateverdomain.com.br' to ALLOWED_HOSTS.

经过搜索，我发现了很多有关 Django 和更新文件的资源ALLOWED_HOSTS，settings.py但问题是我不使用 Django，而且我的 Linux 发行版中也没有settings.py（到目前为止）。

http://www.mywhateverdomain.com从网络浏览器访问就可以了。

这是浏览器中公开的回溯：

Environment:

Request Method: GET
Request URL: http://mywhateverdomain.com.br/

Django Version: 1.10.6
Python Version: 2.7.12
Installed Applications:
('django_cleanup',
 'website.apps.VideoConfig',
 'django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles')
Installed Middleware:
('django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware',
 'django.middleware.security.SecurityMiddleware')

Traceback:

File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/exception.py" in inner
  42.             response = get_response(request)

File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py" in _legacy_get_response
  244.             response = middleware_method(request)

File "/usr/local/lib/python2.7/dist-packages/django/middleware/common.py" in process_request
  57.         host = request.get_host()

File "/usr/local/lib/python2.7/dist-packages/django/http/request.py" in get_host
  113.             raise DisallowedHost(msg)

Exception Type: DisallowedHost at /
Exception Value: Invalid HTTP_HOST header: 'mywhateverdomain.com.br'. You may need to add u'mywhateverdomain.com.br' to ALLOWED_HOSTS.

/usr/local/lib/python2.7/顺便说一句，我的 CentOS 中没有目录，也没有common.py、request.py等文件。这可能是什么问题？