diff --git a/target/postgrey/postgrey b/target/postgrey/postgrey
index 30d6fa88..cd412e83 100644
--- a/target/postgrey/postgrey
+++ b/target/postgrey/postgrey
@@ -2,5 +2,5 @@
 #   --delay=N   how long to greylist, seconds (default: 300)
 #   --max-age=N delete old entries after N days (default: 35)
 
-POSTGREY_OPTS="--inet=10023"
+POSTGREY_OPTS="--inet=127.0.0.1:10023"
 
diff --git a/target/start-mailserver.sh b/target/start-mailserver.sh
index 7fc58059..7d4faaab 100644
--- a/target/start-mailserver.sh
+++ b/target/start-mailserver.sh
@@ -534,7 +534,7 @@ function _setup_ldap() {
 function _setup_postgrey() {
 	notify 'inf' "Configuring postgrey"
 	sed -i -e 's/bl.spamcop.net$/bl.spamcop.net, check_policy_service inet:127.0.0.1:10023/' /etc/postfix/main.cf
-	sed -i -e "s/\"--inet=10023\"/\"--inet=10023 --delay=$POSTGREY_DELAY --max-age=$POSTGREY_MAX_AGE\"/" /etc/default/postgrey
+	sed -i -e "s/\"--inet=127.0.0.1:10023\"/\"--inet=127.0.0.1:10023 --delay=$POSTGREY_DELAY --max-age=$POSTGREY_MAX_AGE\"/" /etc/default/postgrey
 	TEXT_FOUND=`grep -i "POSTGREY_TEXT" /etc/default/postgrey | wc -l`
 
 	if [ $TEXT_FOUND -eq 0 ]; then
diff --git a/test/tests.bats b/test/tests.bats
index 9e7a4f65..e166b77d 100644
--- a/test/tests.bats
+++ b/test/tests.bats
@@ -132,7 +132,7 @@ load 'test_helper/bats-assert/load'
 }
 
 @test "checking postgrey: /etc/default/postgrey correctly edited and has the default values" {
-  run docker exec mail_with_postgrey /bin/bash -c "grep '^POSTGREY_OPTS=\"--inet=10023 --delay=15 --max-age=35\"$' /etc/default/postgrey | wc -l"
+  run docker exec mail_with_postgrey /bin/bash -c "grep '^POSTGREY_OPTS=\"--inet=127.0.0.1:10023 --delay=15 --max-age=35\"$' /etc/default/postgrey | wc -l"
   assert_success
   assert_output 1
   run docker exec mail_with_postgrey /bin/bash -c "grep '^POSTGREY_TEXT=\"Delayed by postgrey\"$' /etc/default/postgrey | wc -l"