Django错误记录：AdminEmailHandler无声地失败

Question

我有一个Django项目，其中包含以下日志记录配置：

LOGGING = {
    'version': 1,
    'disable_existing_loggers': False,
    'formatters': {
    'verbose': {
        'format': 'LEVEL:%(levelname)s TIME:%(asctime)s MODULE:%(module)s LINE:%(lineno)d PROCESS:%(process)d THREAD:%(thread)d MESSAGE:%(message)s'
    }},
    'handlers': {
        # Include the default Django email handler for errors
        # This is what you'd get without configuring logging at all.
        'mail_admins': {
            'class': 'django.utils.log.AdminEmailHandler',
            'level': 'ERROR',
             # But the emails are plain text by default - HTML is nicer
            'include_html': True,
            'filters : [],
        },
        # Log to a text file that can be rotated by logrotate
        'logfile': {
            'class': 'logging.handlers.WatchedFileHandler',
            'filename': '/[more stuff here]/statistics/logs/django.log',
            'formatter' : 'verbose'
            'filters : [],
        },
    },
    'loggers': {
        # Again, default Django configuration to email unhandled exceptions
        'django.request': {
            'handlers': ['mail_admins','logfile'],
            'level': 'ERROR',
            'propagate': True,
        },
        # Might as well log any errors anywhere else in Django
        'django': {
            'handlers': ['logfile','mail_admins'],
            'level': 'ERROR',
            'propagate': True,
        },
    },
}

如果include_html设置为True我没有收到任何错误的电子邮件，并且处理程序甚至没有打开与SMTP服务器的连接（我使用Python SMTP服务器验证了这一点）替换）。设置include_html = False时一切正常，所以我认为这是一个错误格式的错误消息或编码问题。

如何在记录期间检索 AdminEMailHandler 生成的异常？现在处理程序只是静默失败，这对于记录严重错误的处理程序来说非常糟糕。