diff --git a/build/run/docker-entrypoint/init.d/70-reject.sh b/build/run/docker-entrypoint/init.d/70-reject.sh
index a8b5789..a132c11 100755
--- a/build/run/docker-entrypoint/init.d/70-reject.sh
+++ b/build/run/docker-entrypoint/init.d/70-reject.sh
@@ -2,6 +2,7 @@
 # Notify if rejected emails were found
 while true
 do
+	unset reject
 	bash -c 'tail -n +0 --pid=$$ -f /var/log/mail/maillog* | grep --line-buffered -F -v -f /var/log/mail/reject.log | { sed "/NOQUEUE: reject/q" && kill $$ ;}'
 	reject="$(grep "NOQUEUE: reject" /var/log/mail/maillog* | grep -F -v -f /var/log/mail/reject.log)"
 	echo ${reject} >>/var/log/mail/reject.log