diff --git a/services/postfix-bounce-server.js b/services/postfix-bounce-server.js
index 3bc578b9..729b0d7c 100644
--- a/services/postfix-bounce-server.js
+++ b/services/postfix-bounce-server.js
@@ -48,7 +48,9 @@ let server = net.createServer(socket => {
                     if ( queued ) {
                         queued = queued[1];
                         queued_as = queued.match(/ queued as (\w+)/);
-                        queued_as = queued_as[1];
+                        if (queued_as) {
+                            queued_as = queued_as[1];
+                        }
                     }
                 }