diff --git a/check_local_mattermost_service.sh b/check_local_mattermost_service.sh
index af71002..cb6f0e0 100755
--- a/check_local_mattermost_service.sh
+++ b/check_local_mattermost_service.sh
@@ -186,7 +186,7 @@ for _email in $alert_email_addresses ; do
    alert_email_arr+=("$_email")
 done
 
-[[ -n "$sender_address" ]] || sender_address="check_local_webservice@$(hostname -f)"
+[[ -n "$sender_address" ]] || sender_address="check_mm_service@$(hostname -f)"
 [[ -n "$content_type" ]] || content_type='Content-Type: text/plain;\n charset="utf-8"'
 
 [[ -n "$TIME_OUT" ]] || TIME_OUT=$DEFAULT_TIME_OUT