diff --git a/worker.py b/worker.py
index 570cf41..bd09549 100755
--- a/worker.py
+++ b/worker.py
@@ -96,7 +96,7 @@ def apply_bounce_logic(parsed, subject):
     log("🔍 Detected SES MAILER-DAEMON bounce notification")
     
     # Message-ID aus Header extrahieren
-    message_id = (parsed.get('Message-ID') or '').strip('<>')
+    message_id = (parsed.get('Message-ID') or '').strip('<>').split('@')[0]
     
     if not message_id:
         log("⚠ Could not extract Message-ID from bounce notification")