diff --git a/matrix_appservice_kakaotalk/matrix.py b/matrix_appservice_kakaotalk/matrix.py
index b3374ad..3f6e9eb 100644
--- a/matrix_appservice_kakaotalk/matrix.py
+++ b/matrix_appservice_kakaotalk/matrix.py
@@ -47,7 +47,12 @@ class MatrixHandler(BaseMatrixHandler):
 
     @staticmethod
     async def allow_bridging_message(user: u.User, portal: po.Portal) -> bool:
-        return user.is_connected or (user.relay_whitelisted and portal.has_relay)
+        if user.is_connected:
+            return True
+        if user.relay_whitelisted and portal.has_relay:
+            relay_user = await portal.get_relay_user()
+            return relay_user and relay_user.is_connected
+        return False
 
     async def send_welcome_message(self, room_id: RoomID, inviter: u.User) -> None:
         await super().send_welcome_message(room_id, inviter)