postfix: Motivation postfix to send mails with TLS

  Why doesn't it do that by default?!

Signed-off-by: Maximilian Wilhelm <max@sdn.clinic>

postfix/main.cf.Debian.bullseye

@@ -27,6 +27,10 @@ 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
+smtp_tls_security_level = may
+smtp_use_tls = yes
+smtp_tls_note_starttls_offer = yes
+
 
 # See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for
 # information on enabling SSL in the smtp client.

postfix/main.cf.Debian.buster

@@ -27,6 +27,9 @@ 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
+smtp_tls_security_level = may
+smtp_use_tls = yes
+smtp_tls_note_starttls_offer = yes
 
 # See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for
 # information on enabling SSL in the smtp client.

postfix/main.cf.Debian.stretch

@@ -1,43 +0,0 @@
-# See /usr/share/postfix/main.cf.dist for a commented, more complete version
-
-
-# Debian 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
-
-smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU)
-biff = no
-
-# appending .domain is the MUA's job.
-append_dot_mydomain = no
-
-# Uncomment the next line to generate "delayed mail" warnings
-#delay_warning_time = 4h
-
-readme_directory = no
-
-# TLS parameters
-smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
-smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
-smtpd_use_tls=yes
-smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
-smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
-
-# See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for
-# information on enabling SSL in the smtp client.
-
-smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination
-myhostname = {{ grains['id'] }}
-alias_maps = hash:/etc/aliases
-alias_database = hash:/etc/aliases
-myorigin = /etc/mailname
-mydestination = {{ grains['id'] }}, localhost
-relayhost = mail.ffho.net
-mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
-mailbox_command = procmail -a "$EXTENSION"
-mailbox_size_limit = 0
-recipient_delimiter = +
-inet_interfaces = all
-# IPv6 only
-inet_protocols = ipv6

postfix/main.cf.H_ticket.in.ffho.net

@@ -23,6 +23,9 @@ 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
+smtp_tls_security_level = may
+smtp_use_tls = yes
+smtp_tls_note_starttls_offer = yes
 
 # See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for
 # information on enabling SSL in the smtp client.