diff --git a/email_api/docker-compose.yml b/email_api/docker-compose.yml
index 866524d..159262d 100644
--- a/email_api/docker-compose.yml
+++ b/email_api/docker-compose.yml
@@ -3,19 +3,13 @@ services:
     container_name: email-api
     image: python:3.12-slim
     restart: unless-stopped
-    ports:
-      - "5000:5000"
-    networks:
-      - mail_network
+    network_mode: host  # Nutzt das Host-Netzwerk
     volumes:
       - ./email_api:/app
     working_dir: /app
     env_file:
-      - .env  # Explizit .env-Datei laden
+      - .env
     environment:
-      - API_TOKEN=${API_TOKEN}  # Lädt API_TOKEN aus .env
+      - API_TOKEN=${API_TOKEN}
     command: >
-      bash -c "pip install --upgrade pip && pip install flask python-dotenv && python app.py"
-networks:
-  mail_network:
-    external: true
\ No newline at end of file
+      bash -c "pip install --upgrade pip && pip install flask python-dotenv && python app.py"
\ No newline at end of file
diff --git a/email_api/email_api/app.py b/email_api/email_api/app.py
index ce007ce..da3894d 100644
--- a/email_api/email_api/app.py
+++ b/email_api/email_api/app.py
@@ -5,30 +5,38 @@ import base64
 import gzip
 import logging
 import os
+from dotenv import load_dotenv
 
 # Python-Version prüfen
 if sys.version_info < (3, 12):
     raise RuntimeError("Python 3.12 oder höher erforderlich")
 
+# .env-Datei laden
+load_dotenv()
+
 app = Flask(__name__)
 logging.basicConfig(level=logging.INFO)
 logger = logging.getLogger(__name__)
 
 # Konfiguration
-# SMTP_HOST = "mailcowdockerized-postfix-mailcow-1"  # MailCow Postfix-Container
-SMTP_HOST = "postfix-mailcow" # MailCow Postfix-Container
+SMTP_HOST = "localhost"  # Verweist auf Host-Port 25
 SMTP_PORT = 25  # Fest auf Port 25 ohne TLS
-API_TOKEN = os.environ.get('API_TOKEN', 'your-api-token')  # Muss mit Lambda übereinstimmen
-logger.info(f"API_TOKEN: {API_TOKEN}")
+API_TOKEN = os.environ.get('API_TOKEN')
+if not API_TOKEN:
+    raise ValueError("API_TOKEN Umgebungsvariable nicht gesetzt")
+
+logger.info(f"API_TOKEN loaded: {API_TOKEN}")
 
 @app.route('/process/<domain>', methods=['POST'])
 def process_email(domain):
-    # Authentifizierung via Bearer-Token
     auth_header = request.headers.get('Authorization')
     if not auth_header or auth_header != f'Bearer {API_TOKEN}':
         return jsonify({'error': 'Unauthorized'}), 401
 
     data = request.get_json()
+    if not data:
+        return jsonify({'error': 'Invalid JSON payload'}), 400
+
     request_id = data.get('request_id')
     email_content = data.get('email_content')
     compressed = data.get('compressed', False)
@@ -36,14 +44,12 @@ def process_email(domain):
     logger.info(f"[{request_id}] Processing email for domain: {domain}")
 
     try:
-        # Entkomprimieren, falls komprimiert
         if compressed:
             email_bytes = base64.b64decode(email_content)
             email_content = gzip.decompress(email_bytes).decode('utf-8')
         else:
             email_content = base64.b64decode(email_content).decode('utf-8')
 
-        # An Postfix lokal weiterleiten (Port 25, kein TLS)
         with smtplib.SMTP(SMTP_HOST, SMTP_PORT) as smtp:
             smtp.sendmail('lambda@andreasknuth.de', f'inbox@{domain}', email_content)
         logger.info(f"[{request_id}] Email forwarded to Postfix for {domain}")