Unable to send activation email. user authentication

Title: Issue with socket.getfqdn Override Affecting Email Sending in Django

Body:

Hello,

I'm encountering an issue with Django when trying to override the socket.getfqdn function to use a local hostname for email configuration. The override is causing errors when starting the Django development server, and I'm also unable to send emails from within the Django shell. Additionally, we are experiencing issues with email delivery related to user authentication with Djoser and JWT.

Problem Description

I've overridden socket.getfqdn to return a specific local hostname in my Django settings, but this results in the following error when running python manage.py runserver:

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TypeError: getfqdn() takes 0 positional arguments but 1 was given

When I comment out the override, the server starts without issues, but I'm unable to test email sending. Here's the relevant part of my code:

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import socket # Override the local hostname used by Django for sending emails EMAIL_HOST_LOCALNAME = 'localhost' socket.getfqdn = lambda: EMAIL_HOST_LOCALNAME

Project Context

• Authentication: We are building user authentication using Djoser and JWT. User creation is successful, but activation emails are not being sent.
• Email Provider: We are using Namecheap Private Email for sending emails.

Expected Behavior

1. Server Start: The server should start without errors.
2. Email Sending: Emails, including activation emails, should be sent successfully from within the Django shell and during user authentication processes.

Actual Behavior

1. Server Start: An error is raised due to the socket.getfqdn override.
2. Email Sending: When the override is commented out, email sending cannot be tested, and activation emails are not sent as expected.

What I Have Tried

1. Corrected Override: I ensured that the override matches the expected signature but still faced issues.
2. Console Backend: Used the console backend for testing, which works but doesn't resolve the issue with the SMTP configuration.
3. Configuration Check: Verified that all environment variables and SMTP configurations are correct.
4. Djoser Settings: Checked Djoser settings to ensure email sending is configured properly.

Question

How can I correctly override socket.getfqdn without causing issues with the Django server, or alternatively, how can I resolve the email sending issues while using the correct configuration? Additionally, how can I ensure that activation emails are sent as part of the user authentication process?

Any guidance or suggestions would be greatly appreciated!

Thank you!

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