Tests: listen on localhost only.
diff --git a/smtp.conf b/smtp.conf
index f9747e5..242d9cd 100644
--- a/smtp.conf
+++ b/smtp.conf
@@ -15,13 +15,13 @@
     xclient    off;
 
     server {
-        listen     10025;
+        listen     localhost:10025;
         protocol   smtp;
         smtp_auth  login plain none;
     }
 
     server {
-        listen     10026;
+        listen     localhost:10026;
         protocol   smtp;
         smtp_greeting_delay  100ms;
     }
@@ -31,7 +31,7 @@
     access_log    off;
 
     server {
-        listen       8080;
+        listen       localhost:8080;
         server_name  localhost;
 
         location = /mail/auth {
diff --git a/ssi-include-big.conf b/ssi-include-big.conf
index 886be1f..84501ec 100644
--- a/ssi-include-big.conf
+++ b/ssi-include-big.conf
@@ -20,7 +20,7 @@
 
 
     server {
-        listen       8080;
+        listen       localhost:8080;
         server_name  localhost;
 
         location /proxy/ {