luke I've checked your Django project settings for the three sites you've mentioned.
Your Django email settings are not correct:
- You have
EMAIL_HOST
set to an IMAP server instead of a SMTP server, ie EMAIL_HOST = 'smtp.us.opalstack.com'
- You've not specified the type of encryption to use, ie
EMAIL_USE_TLS
or EMAIL_USE_SSL
- You've not specified a port, ie
EMAIL_PORT = 587
or EMAIL_PORT = 465
The settings you should be using are documented here: Sending Email from Django
Please try the documented settings and let me know how it goes, thanks.