[Django]-Django – SMTPAuthenticationError

You need to add SMTP server settings to your settings.py file. Example:

EMAIL_HOST = 'smtp.example.com'
EMAIL_PORT = 25
EMAIL_HOST_USER = 'mailer@example.com'
EMAIL_HOST_PASSWORD = 'password'
EMAIL_USE_TLS = True

From Django documentation:

Mail is sent using the SMTP host and port specified in the EMAIL_HOST and EMAIL_PORT settings. The EMAIL_HOST_USER and EMAIL_HOST_PASSWORD settings, if set, are used to authenticate to the SMTP server, and the EMAIL_USE_TLS setting controls whether a secure connection is used.