mailcow-dockerized/data/web/_rspamderror.php

<?php
$redis = new Redis();
try {
  $redis->connect('redis-mailcow', 6379);
}
catch (Exception $e) {
  exit;
}
header('Content-Type: application/json');
echo '{"error":"Unauthorized"}';
error_log("Rspamd UI: Invalid password by " . $_SERVER['REMOTE_ADDR']);
$redis->publish("F2B_CHANNEL", "Rspamd UI: Invalid password by " . $_SERVER['REMOTE_ADDR']);