SOAP endpoint not working, bounce processing for civismtp
CiviSMTP uses this endpoint, broken since the Drupal8 update:
https://civicrm.org/sites/all/modules/civicrm/extern/soap.php
CiviSMTP uses this endpoint, broken since the Drupal8 update:
https://civicrm.org/sites/all/modules/civicrm/extern/soap.php