roles/postfix/templates/main.cf

   1 # local delivery: aliases only
   2 alias_maps = hash:/etc/aliases
   3 local_recipient_maps = $alias_maps
   4 # explicitly UNSET relay domains to prevent implicit domains
   5 relay_domains =
   6 # only consider ourselves local
   7 mynetworks_style = host
   8 {% if postfix.mynetworks is defined %}
   9 mynetworks = {{ postfix.mynetworks }}
  10 {% endif %}
  11
  12 # TLS server parameters
  13 smtpd_tls_cert_file=/etc/ssl/mycerts/letsencrypt/live.crt+chain
  14 smtpd_tls_key_file=/etc/ssl/private/letsencrypt/live.key
  15 smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
  16 smtpd_tls_security_level = may
  17 smtpd_tls_loglevel = 1
  18 smtpd_tls_dh1024_param_file = /etc/ssl/dh2048.pem
  19 smtpd_tls_mandatory_protocols = !SSLv2 !SSLv3
  20 smtpd_tls_ciphers = low
  21 smtpd_tls_mandatory_ciphers = high
  22 # TLS client parameters
  23 smtp_tls_mandatory_protocols = !SSLv2 !SSLv3
  24 smtp_tls_ciphers = low
  25 smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
  26 smtp_tls_security_level = dane
  27 smtp_dns_support_level = dnssec
  28 smtp_tls_loglevel = 1
  29
  30 # postscreen config
  31 postscreen_dnsbl_threshold = 3
  32 postscreen_dnsbl_whitelist_threshold = -2
  33 postscreen_dnsbl_sites =
  34         ix.dnsbl.manitu.net*2 sbl-xbl.spamhaus.org*2
  35         bl.spamcop.net dnsbl.sorbs.net bl.mailspike.net
  36         swl.spamhaus.org*-2 list.dnswl.org=127.0.[0..255].[0..254]*-2
  37 postscreen_greet_action = enforce
  38 postscreen_dnsbl_action = enforce
  39 postscreen_pipelining_enable = yes
  40 postscreen_non_smtp_command_enable = yes
  41 postscreen_bare_newline_enable = yes
  42 # control relay access
  43 smtpd_relay_restrictions = permit_mynetworks, permit_tls_clientcerts,
  44         # allow nobody else
  45         defer_unauth_destination
  46 # spam-protection restrictions
  47 smtpd_helo_required = yes
  48 smtpd_recipient_restrictions = permit_mynetworks, permit_tls_clientcerts,
  49         # check everybody else
  50         reject_unauth_pipelining,
  51         reject_invalid_helo_hostname,
  52         reject_non_fqdn_recipient,
  53         reject_non_fqdn_sender,
  54
  55 # misc
  56 smtpd_delay_reject = yes
  57 disable_vrfy_command = yes
  58 recipient_delimiter = +
  59 delay_warning_time = 4h
  60 message_size_limit = 21384000
  61 append_dot_mydomain = no