diff --git a/config.py b/config.py
index 519ea11..838a300 100644
--- a/config.py
+++ b/config.py
@@ -35,7 +35,7 @@ class FlaskApplicationSettings(object):
         + LocalConfig.DB_NAME
     SQLALCHEMY_TRACK_MODIFICATIONS = False
 
-    MAIL_DEFAULT_SENDER = "noreply@v5.planet-casio.com"
+    MAIL_DEFAULT_SENDER = "noreply-v5@planet-casio.com"
     MAIL_SUPPRESS_SEND = None
 
     # Only send cookies over HTTPS connections (use only if HTTPS is enabled)