diff --git a/dockerfiles/email-forwarder/install.sh b/dockerfiles/email-forwarder/install.sh
index 61769d52da1e86a11eaf88b2ad19170640c4000a..8a43b605961ff338ff26c06078be425c97c098ba 100755
--- a/dockerfiles/email-forwarder/install.sh
+++ b/dockerfiles/email-forwarder/install.sh
@@ -45,3 +45,4 @@ cp /data/forwards /etc/postfix/virtual
 
 # accept mails from docker networked machines:
 /usr/sbin/postconf -e "mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 172.17.42.0/24"
+