X-Git-Url: https://git.ralfj.de/ansible.git/blobdiff_plain/a232041d9ff4b71aaee76fd739d92c0a64aadd24..f9d9fdb556ada341ff26b2bee7031c38bad893cd:/roles/email/templates/main.cf?ds=sidebyside

diff --git a/roles/email/templates/main.cf b/roles/email/templates/main.cf
index b674e42..2d254f0 100644
--- a/roles/email/templates/main.cf
+++ b/roles/email/templates/main.cf
@@ -1,14 +1,19 @@
 compatibility_level = 2
 
-# local delivery: aliases only
-alias_maps = hash:/etc/aliases
-local_recipient_maps = $alias_maps
+{% if postfix.hostname is defined %}
+myhostname = {{ postfix.hostname }}
+{% endif %}
 {% if postfix.mynetworks is defined %}
 mynetworks = {{ postfix.mynetworks }}
 {% endif %}
 
+# local delivery: aliases only
+alias_maps = hash:/etc/aliases
+local_recipient_maps = $alias_maps
+
+{% if 'letsencrypt' in group_names %}
 # TLS server parameters
-smtpd_tls_cert_file=/etc/ssl/mycerts/letsencrypt/live.crt+chain
+smtpd_tls_cert_file=/etc/ssl/mycerts/letsencrypt/live.crt
 smtpd_tls_key_file=/etc/ssl/private/letsencrypt/live.key
 smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
 smtpd_tls_security_level = may
@@ -17,14 +22,16 @@ smtpd_tls_dh1024_param_file = /etc/ssl/dh2048.pem
 smtpd_tls_mandatory_protocols = !SSLv2 !SSLv3
 smtpd_tls_ciphers = low
 smtpd_tls_mandatory_ciphers = high
+{% endif %}
 # TLS client parameters
 smtp_tls_mandatory_protocols = !SSLv2 !SSLv3
 smtp_tls_ciphers = low
 smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
 smtp_tls_loglevel = 1
-{% if not(postfix.relay_host is defined) %}
-smtp_tls_security_level = dane
+{% if 'unbound' in group_names %}
+# If there are TLSA records, enforce using encryption
 smtp_dns_support_level = dnssec
+smtp_tls_security_level = dane
 {% endif %}
 
 {% if postfix.postscreen | default(False) %}
@@ -32,14 +39,17 @@ smtp_dns_support_level = dnssec
 postscreen_dnsbl_threshold = 3
 postscreen_dnsbl_whitelist_threshold = -2
 postscreen_dnsbl_sites =
-	ix.dnsbl.manitu.net*2 sbl-xbl.spamhaus.org*2
-	bl.spamcop.net dnsbl.sorbs.net bl.mailspike.net
+	ix.dnsbl.manitu.net*2 sbl-xbl.spamhaus.org*3 truncate.gbudb.net*2
+	bl.spamcop.net bl.mailspike.net
 	swl.spamhaus.org*-2 list.dnswl.org=127.0.[0..255].[0..254]*-2
 postscreen_greet_action = enforce
 postscreen_dnsbl_action = enforce
 postscreen_pipelining_enable = yes
 postscreen_non_smtp_command_enable = yes
 postscreen_bare_newline_enable = yes
+postscreen_access_list = permit_mynetworks,
+	cidr:$config_directory/postscreen_access.cidr
+postscreen_blacklist_action = enforce
 {% endif %}
 
 # control relay access
@@ -55,6 +65,11 @@ smtpd_recipient_restrictions = permit_mynetworks, permit_tls_clientcerts,
     reject_non_fqdn_recipient,
     reject_non_fqdn_sender,
 
+# SMTP smuggling protection
+# <https://www.postfix.org/smtp-smuggling.html>
+smtpd_data_restrictions = reject_unauth_pipelining
+smtpd_discard_ehlo_keywords = chunking
+
 {% if postfix.relay_host is defined %}
 # Relay everything
 default_transport = smtp:{{ postfix.relay_host }}
@@ -80,7 +95,7 @@ relay_clientcerts = hash:$config_directory/relay_clientcerts
 {% endif %}
 
 # setup virtual delivery domains, aliases and destinations
-virtual_mailbox_domains =
+virtual_mailbox_domains = {{ postfix.alias_domains | default("") }}
 {% if postfix.mailman is defined %}  {% for item in postfix.mailman.domains %} {{item}}{% endfor %}{% endif %}
 {% if postfix.dovecot is defined %}  {% for item in postfix.dovecot.domains %} {{item}}{% endfor %}{% endif %}
 
@@ -130,6 +145,6 @@ non_smtpd_milters = $smtpd_milters
 # misc
 smtpd_delay_reject = yes
 disable_vrfy_command = yes
-recipient_delimiter = +
+recipient_delimiter = {{ postfix.recipient_delimiter | default("+") }}
 delay_warning_time = 4h
-message_size_limit = 21384000
+message_size_limit = 30100100