The django-ses package fails 19 out of 70 tests when running against Django 6.0, indicating breaking changes in Django's email handling and signal dispatch mechanisms.

Environment

• Django Version: 6.0
• Python Version: 3.12
• django-ses Version: 4.4.0

Issues Identified

1. Message.as_bytes() API Change

Error: TypeError: Message.as_bytes() got an unexpected keyword argument 'linesep'

Affected Code:

• django_ses/__init__.py:274 (v2 parameters)
• django_ses/__init__.py:297 (v1 parameters)

Root Cause: Django 6 have changed the signature of Message.as_bytes() in the email module, removing linesep parameter, because the email object is now a type of email.message.EmailMessage.

2. Signal Dispatch API Change

Error 1: TypeError: 'bool' object is not callable

• Location: Django's dispatcher.py:435 in _clear_dead_receivers()
• Test: test_views.HandleBounceTestCaseWithBL.test_bounce_event_can_perform_blacklist

Error 2: ValueError: not enough values to unpack (expected 4, got 3)

• Location: Django's dispatcher.py:459 in _live_receivers()
• Test: test_views.HandleBounceTestCaseWithBL.test_complaint_event_can_perform_blacklist

Root Cause: Django 6 has modified the internal signal dispatch receiver signature again, the test setup is not respecting this.