Index: postfix-dev/conf/main.cf
===================================================================
--- postfix-dev.orig/conf/main.cf	2019-03-01 11:06:55.849697457 -0500
+++ postfix-dev/conf/main.cf	2019-03-01 11:06:55.841697457 -0500
@@ -75,7 +75,7 @@
 # particular, don't specify nobody or daemon. PLEASE USE A DEDICATED
 # USER.
 #
-mail_owner = postfix
+#mail_owner = postfix
 
 # The default_privs parameter specifies the default rights used by
 # the local delivery agent for delivery to external file or command.
@@ -114,6 +114,11 @@
 # myorigin also specifies the default domain name that is appended
 # to recipient addresses that have no @domain part.
 #
+# 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
 #myorigin = $mydomain
 
@@ -279,6 +284,7 @@
 #mynetworks = 168.100.189.0/28, 127.0.0.0/8
 #mynetworks = $config_directory/mynetworks
 #mynetworks = hash:/etc/postfix/network_table
+mynetworks = 127.0.0.0/8
 
 # The relay_domains parameter restricts what destinations this system will
 # relay mail to.  See the smtpd_recipient_restrictions description in
@@ -567,6 +573,8 @@
 #
 #smtpd_banner = $myhostname ESMTP $mail_name
 #smtpd_banner = $myhostname ESMTP $mail_name ($mail_version)
+smtpd_banner = $myhostname ESMTP $mail_name (@@DISTRO@@)
+
 
 # PARALLEL DELIVERY TO THE SAME DESTINATION
 #
@@ -591,7 +599,7 @@
 # logging level when an SMTP client or server host name or address
 # matches a pattern in the debug_peer_list parameter.
 #
-debug_peer_level = 2
+#debug_peer_level = 2
 
 # The debug_peer_list parameter specifies an optional list of domain
 # or network patterns, /file/name patterns or type:name tables. When
Index: postfix-dev/conf/main.cf.tls
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ postfix-dev/conf/main.cf.tls	2019-03-01 11:06:55.841697457 -0500
@@ -0,0 +1,11 @@
+
+# TLS parameters
+smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
+smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
+smtpd_use_tls=yes
+smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
+smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
+
+# See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for
+# information on enabling SSL in the smtp client.
+
Index: postfix-dev/conf/postfix-files
===================================================================
--- postfix-dev.orig/conf/postfix-files	2019-03-01 11:06:55.849697457 -0500
+++ postfix-dev/conf/postfix-files	2019-03-01 11:06:55.845697457 -0500
@@ -143,27 +143,28 @@
 $mailq_path:l:$sendmail_path
 $config_directory/LICENSE:f:root:-:644:1
 $config_directory/TLS_LICENSE:f:root:-:644:1
-$config_directory/access:f:root:-:644:p1
-$config_directory/aliases:f:root:-:644:p1
-$config_directory/bounce.cf.default:f:root:-:644:1
-$config_directory/canonical:f:root:-:644:p1
-$config_directory/cidr_table:f:root:-:644:o
-$config_directory/generic:f:root:-:644:p1
-$config_directory/generics:f:root:-:644:o
-$config_directory/header_checks:f:root:-:644:p1
-$config_directory/install.cf:f:root:-:644:o
-$config_directory/main.cf.default:f:root:-:644:1
+# Empty files not shipped in Debian
+#$config_directory/access:f:root:-:644:p1
+#$config_directory/aliases:f:root:-:644:p1
+#$config_directory/bounce.cf.default:f:root:-:644:1
+#$config_directory/canonical:f:root:-:644:p1
+#$config_directory/cidr_table:f:root:-:644:o
+#$config_directory/generic:f:root:-:644:p1
+#$config_directory/generics:f:root:-:644:o
+#$config_directory/header_checks:f:root:-:644:p1
+#$config_directory/install.cf:f:root:-:644:o
+#$config_directory/main.cf.default:f:root:-:644:1
 $config_directory/main.cf:f:root:-:644:p
 $config_directory/master.cf:f:root:-:644:p
-$config_directory/pcre_table:f:root:-:644:o
-$config_directory/regexp_table:f:root:-:644:o
-$config_directory/relocated:f:root:-:644:p1
-$config_directory/tcp_table:f:root:-:644:o
-$config_directory/transport:f:root:-:644:p1
-$config_directory/virtual:f:root:-:644:p1
+#$config_directory/pcre_table:f:root:-:644:o
+#$config_directory/regexp_table:f:root:-:644:o
+#$config_directory/relocated:f:root:-:644:p1
+#$config_directory/tcp_table:f:root:-:644:o
+#$config_directory/transport:f:root:-:644:p1
+#$config_directory/virtual:f:root:-:644:p1
 $config_directory/postfix-script:f:root:-:755:o
-$config_directory/postfix-script-sgid:f:root:-:755:o
-$config_directory/postfix-script-nosgid:f:root:-:755:o
+#$config_directory/postfix-script-sgid:f:root:-:755:o
+#$config_directory/postfix-script-nosgid:f:root:-:755:o
 $config_directory/post-install:f:root:-:755:o
 $manpage_directory/man1/mailq.1:f:root:-:644
 $manpage_directory/man1/newaliases.1:f:root:-:644