diff --git a/scripts/nullmailer.service b/scripts/nullmailer.service
index 1412810..877f9ce 100644
--- a/scripts/nullmailer.service
+++ b/scripts/nullmailer.service
@@ -11,6 +11,7 @@ WorkingDirectory=/var/spool/nullmailer
 ExecStart=/usr/sbin/nullmailer-send
 User=nullmail
 Group=nullmail
+WatchdogSec=600
 Restart=always
 
 [Install]