old_contents: from django.conf import settings
  from django.core.checks import Error, Warning, register
  
  
  @register(deploy=True)
  def deploy_settings_check(app_configs, **kwargs):
      errors = []
      if not settings.HOSTNAME.startswith('http'):
          errors.append(
              Error(
                  'Missing scheme in HOSTNAME',
                  hint='Configure a hostname that starts with a scheme (e.g. https)',
                  obj=settings.HOSTNAME
              )
          )
      if '<' in settings.DEFAULT_FROM_EMAIL or '@' not in settings.DEFAULT_FROM_EMAIL:
          errors.append(
              Error(
                  'DEFAULT_FROM_EMAIL is not an pure e-mail address',
                  hint='Make sure that it does not contain a name, instead use SITE_NAME for it',
                  obj=settings.DEFAULT_FROM_EMAIL
              )
          )
      if not settings.ANYMAIL.get('POSTAL_API_KEY') or len(settings.ANYMAIL.get('POSTAL_API_KEY')) < 10:
          errors.append(Error(
              'Missing ANYMAIL.POSTAL_API_KEY',
              hint='Needs a postal API key to send out e-mails',
          ))
      if not settings.ANYMAIL.get('WEBHOOK_SECRET') or len(settings.ANYMAIL.get('WEBHOOK_SECRET')) < 5:
          errors.append(
              Error(
                  'Missing ANYMAIL.WEBHOOK_SECRET',
                  hint='Set it to a random string to secure the e-mail events webhook (for bounces etc)',
              )
          )
      if len(settings.SITE_NAME) > 40:
          errors.append(
              Warning(
                  'SITE_NAME is quite long',
                  hint='It will get used as default e-mail sender name, so better keep it short',
                  obj=settings.SITE_NAME
              )
          )
  
      return errors
  
new_contents: from django.conf import settings
  from django.core.checks import Error, Warning, register
  
  
  @register(deploy=True)
  def deploy_settings_check(app_configs, **kwargs):
      errors = []
      if not settings.HOSTNAME.startswith('http'):
          errors.append(
              Error(
                  'Missing scheme in HOSTNAME',
                  hint='Configure a hostname that starts with a scheme (e.g. https)',
                  obj=settings.HOSTNAME
              )
          )
      if '<' in settings.DEFAULT_FROM_EMAIL or '@' not in settings.DEFAULT_FROM_EMAIL:
          errors.append(
              Error(
                  'DEFAULT_FROM_EMAIL is not an pure e-mail address',
                  hint='Make sure that it does not contain a name, instead use SITE_NAME for it',
                  obj=settings.DEFAULT_FROM_EMAIL
              )
          )
      if not settings.ANYMAIL.get('POSTAL_API_KEY') or len(settings.ANYMAIL.get('POSTAL_API_KEY')) < 10:
          errors.append(Error(
              'Missing ANYMAIL.POSTAL_API_KEY',
              hint='Needs a postal API key to send out e-mails',
          ))
  
      # Postal doesn't support webhook basic auth
      # if not settings.ANYMAIL.get('WEBHOOK_SECRET') or len(settings.ANYMAIL.get('WEBHOOK_SECRET')) < 5:
      #     errors.append(
      #         Error(
      #             'Missing ANYMAIL.WEBHOOK_SECRET',
      #             hint='Set it to a random string to secure the e-mail events webhook (for bounces etc)',
      #         )
      #     )
      if len(settings.SITE_NAME) > 40:
          errors.append(
              Warning(
                  'SITE_NAME is quite long',
                  hint='It will get used as default e-mail sender name, so better keep it short',
                  obj=settings.SITE_NAME
              )
          )
  
      return errors
  
subject: remove webhook secret check