diff --git a/DMS/Dockerfile b/DMS/Dockerfile
index eaba22a..ef3bcc6 100644
--- a/DMS/Dockerfile
+++ b/DMS/Dockerfile
@@ -23,4 +23,9 @@ RUN chmod +x /scripts/sync.py
 COPY sieve-schedule /etc/sieve-schedule
 
 # 5. Supervisor Konfiguration kopieren
-COPY sieve-supervisor.conf /etc/supervisor/conf.d/sieve-sync.conf
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+COPY sieve-supervisor.conf /etc/supervisor/conf.d/sieve-sync.conf
+
+# 6. Dynamic Whitelist Script und Supervisor-Config kopieren
+COPY dynamic_whitelist.py /scripts/dynamic_whitelist.py
+RUN chmod +x /scripts/dynamic_whitelist.py
+COPY whitelist-supervisor.conf /etc/supervisor/conf.d/dynamic-whitelist.conf
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diff --git a/DMS/dynamic_whitelist.py b/DMS/dynamic_whitelist.py
new file mode 100644
index 0000000..f984bf3
--- /dev/null
+++ b/DMS/dynamic_whitelist.py
@@ -0,0 +1,87 @@
+#!/usr/bin/env python3
+import os
+import re
+import time
+import subprocess
+import threading
+from datetime import datetime
+try:
+    from croniter import croniter
+except ImportError:
+    print("Bitte 'croniter' via pip installieren!")
+    exit(1)
+
+LOG_FILE = '/var/log/mail/mail.log'
+WHITELIST_DURATION_SEC = 24 * 60 * 60 # 24 Stunden
+CRON_SCHEDULE = "0 * * * *" # Jede Stunde
+
+active_ips = {}
+
+# Regex für Dovecot IMAP/POP3 erfolgreiche Logins
+LOGIN_REGEX = re.compile(r"dovecot: (?:imap|pop3)-login: Login: user=<[^>]+>.*rip=([0-9]{1,3}(?:\.[0-9]{1,3}){3}),")
+# Private Netze (Docker/Local) ignorieren
+IGNORE_REGEX = re.compile(r"^(172\.|10\.|192\.168\.|127\.)")
+
+def run_command(cmd):
+    try:
+        subprocess.run(cmd, shell=True, check=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
+    except Exception as e:
+        print(f"Fehler bei: {cmd} - {e}")
+
+def cleanup_job():
+    """Cron-Thread für das stündliche Aufräumen abgelaufener IPs."""
+    iter = croniter(CRON_SCHEDULE, datetime.now())
+    while True:
+        next_run = iter.get_next(datetime)
+        sleep_seconds = (next_run - datetime.now()).total_seconds()
+        
+        if sleep_seconds > 0:
+            time.sleep(sleep_seconds)
+            
+        print(f"[{datetime.now()}] Starte stündlichen Whitelist-Cleanup...")
+        now = time.time()
+        expired_ips = [ip for ip, timestamp in active_ips.items() if now - timestamp > WHITELIST_DURATION_SEC]
+        
+        for ip in expired_ips:
+            print(f"[{datetime.now()}] Whitelist für {ip} abgelaufen. Entferne...")
+            run_command(f"fail2ban-client set dovecot delignoreip {ip}")
+            run_command(f"fail2ban-client set postfix delignoreip {ip}")
+            del active_ips[ip]
+
+def follow_log():
+    """Verwendet System 'tail -F', da dies Log-Rotation automatisch handhabt."""
+    print(f"[{datetime.now()}] Dynamic Whitelist Monitor gestartet...")
+    
+    while not os.path.exists(LOG_FILE):
+        time.sleep(2)
+        
+    process = subprocess.Popen(['tail', '-F', LOG_FILE], stdout=subprocess.PIPE, stderr=subprocess.DEVNULL, text=True)
+    
+    for line in process.stdout:
+        match = LOGIN_REGEX.search(line)
+        if match:
+            ip = match.group(1)
+            
+            if IGNORE_REGEX.match(ip):
+                continue
+                
+            now = time.time()
+            
+            # Neue IP in die Fail2ban Whitelist eintragen
+            if ip not in active_ips:
+                print(f"[{datetime.now()}] Neuer erfolgreicher Login von {ip}. Setze auf Whitelist...")
+                run_command(f"fail2ban-client set dovecot addignoreip {ip}")
+                run_command(f"fail2ban-client set postfix addignoreip {ip}")
+            
+            # Timestamp (Last Seen) aktualisieren
+            active_ips[ip] = now
+
+if __name__ == '__main__':
+    # Warte kurz, bis Fail2ban nach einem Container-Start hochgefahren ist
+    time.sleep(15)
+    
+    # Cron-Cleanup im Hintergrund starten
+    threading.Thread(target=cleanup_job, daemon=True).start()
+    
+    # Log-Überwachung in der Endlosschleife starten
+    follow_log()
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diff --git a/DMS/whitelist-supervisor.conf b/DMS/whitelist-supervisor.conf
new file mode 100644
index 0000000..60472f5
--- /dev/null
+++ b/DMS/whitelist-supervisor.conf
@@ -0,0 +1,6 @@
+[program:dynamic-whitelist]
+command=/usr/bin/python3 -u /scripts/dynamic_whitelist.py
+autostart=true
+autorestart=true
+stderr_logfile=/var/log/supervisor/dynamic-whitelist.err.log
+stdout_logfile=/var/log/supervisor/dynamic-whitelist.out.log
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