diff --git a/src/pages/api/debug-env.ts b/src/pages/api/debug-env.ts
new file mode 100644
index 0000000..1a87ea3
--- /dev/null
+++ b/src/pages/api/debug-env.ts
@@ -0,0 +1,14 @@
+import type { APIRoute } from 'astro';
+
+export const GET: APIRoute = () => {
+  return new Response(JSON.stringify({
+    message: 'Debug der Docker Environment Variablen',
+    SMTP_HOST_RAW: process.env.SMTP_HOST || 'nicht vorhanden',
+    SMTP_HOST_LENGTH: process.env.SMTP_HOST ? process.env.SMTP_HOST.length : 0,
+    SMTP_HOST_IS_EXACT_LOCALHOST: process.env.SMTP_HOST === 'localhost',
+    HAS_SESSION_SECRET: !!process.env.SESSION_SECRET,
+  }, null, 2), {
+    status: 200,
+    headers: { 'Content-Type': 'application/json' }
+  });
+};