Fix

email-worker/worker.py

@@ -127,6 +127,17 @@ class MessageProcessor:
             # 5. PARSING & BOUNCE LOGIC
             try:
                 parsed = self.parser.parse_bytes(raw_bytes)
+                
+                # --- FIX START: Sanitize Malformed Headers ---
+                # Fix für Microsofts <[uuid]@domain> Message-IDs, die Python crashen lassen
+                current_msg_id = parsed.get('Message-ID', '')
+                if current_msg_id and ('[' in current_msg_id or ']' in current_msg_id):
+                    # Klammern entfernen, aber spitze Klammern behalten
+                    clean_id = current_msg_id.replace('[', '').replace(']', '')
+                    parsed.replace_header('Message-ID', clean_id)
+                    log(f"  🔧 Sanitized malformed Message-ID", 'INFO', worker_name)
+                # --- FIX END ---
+
                 subject = parsed.get('Subject', '(no subject)')
                 
                 # Bounce header rewriting
@@ -143,10 +154,10 @@ class MessageProcessor:
                 else:
                     from_addr_final = from_addr
                 
-                # ⭐ HIER NEU: Marker für alle Emails von extern setzen
+                # Marker für alle Emails von extern setzen
                 if not skip_rules:  # Nur wenn nicht bereits processed
                     parsed['X-SES-Worker-Processed'] = 'delivered'
-                    raw_bytes = parsed.as_bytes()
+                    raw_bytes = parsed.as_bytes() # <--- Hier knallte es vorher
 
             except Exception as e:
                 # --- VERBESSERTES ERROR LOGGING ---