diff --git a/conf/main.cf b/conf/main.cf
index 2f4eba9e..f5448915 100644
--- a/conf/main.cf
+++ b/conf/main.cf
@@ -81,3 +81,3 @@ data_directory = /var/lib/postfix
 #
-mail_owner = postfix
+#mail_owner = postfix
 
@@ -120,2 +120,7 @@ mail_owner = postfix
 #
+# Debian GNU/Linux specific:  Specifying a file name will cause the
+# first line of that file to be used as the name.  The Debian default
+# is /etc/mailname.
+#
+#myorigin = /etc/mailname
 #myorigin = $myhostname
@@ -288,2 +293,3 @@ unknown_local_recipient_reject_code = 550
 #mynetworks = hash:/etc/postfix/network_table
+mynetworks = 127.0.0.0/8
 
@@ -578,2 +584,3 @@ unknown_local_recipient_reject_code = 550
 #smtpd_banner = $myhostname ESMTP $mail_name ($mail_version)
+smtpd_banner = $myhostname ESMTP $mail_name (@@DISTRO@@)
 
@@ -602,3 +609,3 @@ unknown_local_recipient_reject_code = 550
 #
-debug_peer_level = 2
+#debug_peer_level = 2