diff --git a/data/Dockerfiles/postfix/Dockerfile b/data/Dockerfiles/postfix/Dockerfile
index ba004827..9da92ad6 100644
--- a/data/Dockerfiles/postfix/Dockerfile
+++ b/data/Dockerfiles/postfix/Dockerfile
@@ -35,6 +35,7 @@ COPY zeyple.py /usr/local/bin/zeyple.py
 COPY zeyple.conf /etc/zeyple.conf
 COPY supervisord.conf /etc/supervisor/supervisord.conf
 COPY postfix.sh /opt/postfix.sh
+COPY whitelist_forwardinghosts.sh /usr/local/bin/whitelist_forwardinghosts.sh
 
 EXPOSE 588
 
diff --git a/data/Dockerfiles/postfix/whitelist_forwardinghosts.sh b/data/Dockerfiles/postfix/whitelist_forwardinghosts.sh
new file mode 100755
index 00000000..4ad5ab32
--- /dev/null
+++ b/data/Dockerfiles/postfix/whitelist_forwardinghosts.sh
@@ -0,0 +1,12 @@
+#!/bin/bash
+
+while read QUERY; do
+	QUERY=($QUERY)
+	if [ "${QUERY[0]}" != "get" ]; then
+		echo "500 dunno"
+		continue
+	fi
+	result=$(curl -s http://nginx:8081/forwardinghosts.php?host=${QUERY[1]})
+	logger -t whitelist_forwardinghosts -p mail.info "Look up ${QUERY[1]} on whitelist, result $result"
+	echo ${result}
+done