diff --git a/install_postfix_base.sh b/install_postfix_base.sh
index b09e9df..7009c32 100755
--- a/install_postfix_base.sh
+++ b/install_postfix_base.sh
@@ -473,9 +473,11 @@ inet_protocols = ipv4, ipv6
 
 #inet_interfaces = all
 
-inet_interfaces = 127.0.0.1
-                  $IPV4
-                  $IPV6
+inet_interfaces = 
+   127.0.0.1
+   ::1
+   #$IPV4
+   #$IPV6
 
 myhostname = $HOSTNAME
 
@@ -504,7 +506,7 @@ inet_protocols = ipv4
 #inet_interfaces = all
 inet_interfaces =
    127.0.0.1
-   $IPV4
+   #$IPV4
 
 myhostname = $HOSTNAME
 
@@ -519,8 +521,8 @@ mynetworks =
    127.0.0.0/8
    ${IPV4}/32
 
-#smtp_bind_address = $IPV4
-#smtp_bind_address6 = $IPV6
+smtp_bind_address = $IPV4
+smtp_bind_address6 = $IPV6
 
 EOF
 fi