[Answered ]-Using django subdomain and it says localhost does not belong to the domain example.com

SITE = 1 will correspond to the default example.com set by django.contrib.site.

django.contrib.sites registers a post_migrate signal handler which creates a default site named example.com with the domain example.com. This site will also be created after Django creates the test database.

This is stored in the DB so there’s no way to set this purely in config.

To set it in the DB, follow the steps here:

>>> from django.contrib.sites.models import Site
>>> one = Site.objects.all()[0]
>>> one.domain = 'myveryspecialdomain.com'
>>> one.name = 'My Special Site Name'
>>> one.save()

Then you can run python manage.py dumpdata sites which produces a JSON of the data you’ve just loaded. Then later load it using django-admin loaddata fixture [fixture ...]. Otherwise you can set it via the admin interface, under the Site app.

This will display as example.org before it’s fixed:

Change these:

That should fix the issue.