main.cf
#soft_bounce = yes smtpd_banner = $myhostname ESMTP (NO UCE)(NO UBE) http://www.rfc.net/rfc2821.html 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 = 3h readme_directory = no html_directory = no myorigin = $myhostname # mta MUST accept mail for localhost, localhost.$mydomain mydestination = $myhostname, localhost.$mydomain, localhost myhostname = host.domain.tld # Yes...please exchange it :-) mail_name = Exchange Microsoft # Use only if you have trouble sending mail. It breaks "sender address verification" #fallback_relay = [smtp.*.net] alias_maps = hash:/etc/aliases alias_database = hash:/etc/aliases sender_canonical_maps = hash:/etc/postfix/canonical_sender recipient_canonical_maps = hash:/etc/postfix/canonical_recipient allow_percent_hack = no swap_bangpath = no virtual_maps = hash:/etc/postfix/virtual local_recipient_maps = proxy:$virtual_maps proxy:$alias_maps proxy:unix:passwd.byname #slow-transport (3 smtp connections at a time) slow_destination-concurrency_limit = 3
TLS Sections
# TLS parameters
smtp_tls_security_level=may
#obsoletes smtp_use_tls smtp_enforce_tls smtp_tls_enforce_peername
smtp_tls_note_starttls_offer=yes
smtp_tls_CApath = /etc/ssl/certs
smtpd_tls_security_level=may
#obsoletes smtpd_use_tls smtpd_enforce_tls
smtp_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
smtp_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
# debuging tls
smtp_tls_loglevel = 0
smtpd_tls_loglevel = 0
smtpd_tls_auth_only=yes
smtpd_tls_received_header=yes
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
tls_random_source = dev:/dev/urandom
###smtp_tls_policy_maps = hash:/etc/postfix/tls_policy
###smtpd_tls_ask_ccert = yes
###smtp_tls_verify_cert_match = hostname, nexthop, dot-nexthop
smtp_tls_note_starttls_offer = yes
#smtp_tls_enforce_peername = no
smtpd_sasl_local_domain = $myhostname
smtpd_sasl_application_name = smtpd
smtpd_sasl_auth_enable = yes
smtpd_sasl_security_options = noanonymous
broken_sasl_auth_clients = yes
smtpd_sasl_exceptions_networks = $mynetworks
smtpd_sasl_authenticated_header = no
#unverified_sender_reject_code = 550
relayhost =
mynetworks = 127.0.0.0/8 192.168.10.0/24
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
inet_protocols = all
smtpd_restriction_classes = permissive, rblcheck, greylisting, nodynamic_client, check_policyd_weight, verify_sender
permissive = permit
rblcheck =
check_recipient_access hash:/etc/postfix/whitelist_rbl_recipient,
reject_rbl_client zen.spamhaus.org,
reject_rbl_client bl.spamcop.net,
reject_rbl_client psbl.surriel.com,
reject_rhsbl_sender bogusmx.rfc-ignorant.org
greylisting =
permit_mynetworks,
permit_sasl_authenticated,
check_recipient_access hash:/etc/postfix/whitelist_greylist_recipient,
check_policy_service inet:127.0.0.1:60000
nodynamic_client =
warn_if_reject reject_unknown_client_hostname,
check_client_access pcre:/etc/postfix/no_dynamic.pcre
check_policyd_weight =
check_client_access hash:/etc/postfix/whitelist_policydweight_clients
check_recipient_access hash:/etc/postfix/whitelist_policydweight_recipient,
check_policy_service inet:127.0.0.1:12525
verify_sender =
check_sender_access hash:/etc/postfix/whitelist_verify_sender,
check_recipient_access hash:/etc/postfix/whitelist_verify_recipient,
reject_unverified_sender
# Don't offer ETRN nor VRFY
smtpd_discard_ehlo_keywords = silent-discard, ETRN VRFY
smtpd_discard_ehlo_keyword_address_maps =
hash:/etc/postfix/discard_ehelo_map
smtpd_helo_restrictions =
check_client_access hash:/etc/postfix/whitelist_helo_clients
hash:/etc/postfix/helo_checks
permit_sasl_authenticated
permit_mynetworks
warn_if_reject reject_invalid_hostname
warn_if_reject reject_non_fqdn_hostname
warn_if_reject reject_unknown_hostname
smtpd_etrn_restrictions=
permit_mynetworks,
reject
#smtpd_sender_login_maps = ldap:ldap_accounts, ldap:ldap_alias
#smtpd_sender_restrictions = reject_sender_login_mismatch
smtpd_recipient_restrictions =
greylisting,
reject_unlisted_recipient,
reject_non_fqdn_sender,
reject_non_fqdn_recipient,
reject_unknown_sender_domain,
reject_unknown_recipient_domain,
check_sender_mx_access cidr:/etc/postfix/bogon_networks,
permit_mynetworks,
permit_sasl_authenticated,
reject_unauth_destination,
rblcheck,
check_policyd_weight,
nodynamic_client,
verify_sender
# reject_unverified_recipient
smtpd_data_restrictions =
reject_multi_recipient_bounce
reject_unauth_pipelining
permit
content_filter = smtp-amavis:[127.0.0.1]:10024
#already in master.cf:
#lmtp_send_xforward_command = yes
#smtp_send_xforward_command = yes
hash_queue_depth = 1
# /etc/aliases - add postar!
address_verify_sender = postar
address_verify_map = btree:$(data_directory)/verify
home_mailbox = Maildir/
message_size_limit = 70480000
# ABKO
disable_vrfy_command = yes
smtpd_helo_required = yes
strict_rfc821_envelopes = yes
unverified_recipient_reject_code = 550
unverified_sender_reject_code = 550
smtpd_error_sleep_time = 3s
smtpd_soft_error_limit = 5
smtpd_hard_error_limit = 10
# Mailman feature
owner_request_special = yes
show_user_unknown_table_name = no
# testing purposed
# smtpd_delay_reject = no
# DEBUG
# debug_peer_level = 1
#debug_peer_list = 193.77.x.x/32
remote_header_rewrite_domain = domain.invalid
/etc/postfix/helo_checks
<FQDN> 551 Spammer comes to me. Greets me with my own IP. His mail I shall not see. <IP> 551 Spammer comes to me. Greets me with my own IP. His mail I shall not see. [<IP>] 551 Spammer comes to me. Greets me with my own IP. His mail I shall not see.
/etc/postfix/no_dynamic.pcre
/\.static\./ OK /\.dynamic\./ REJECT Get static IP or use your ISP SMTP server /\-dynamic\./ REJECT Get static IP or use your ISP SMTP server /\-dynamicIP\./ REJECT Get static IP or use your ISP SMTP server /\-dynamicip\./ REJECT Get static IP or use your ISP SMTP server /\.dsl\./ REJECT Get static IP or use your ISP SMTP server /\.adsl\./ REJECT Get static IP or use your ISP SMTP server
/etc/postfix/whitelist_rbl_recipient
root@ OK admin@ OK postmaster@ OK abuse@ OK postar@ OK
/etc/postfix/whitelist_greylist_recipient
root@ OK admin@ OK postmaster@ OK abuse@ OK postar@ OK
/etc/postfix/whitelist_policydweight_recipient
/etc/postfix/whitelist_verify_sender
nevtron.si OK www-data@ OK finance-on.net OK uni-mb.si OK mailer.mojedelo.com OK
/etc/postfix/whitelist_verify_recipient
root@ OK admin@ OK postmaster@ OK abuse@ OK postar@ OK
/etc/postfix/bogon_networks
# http://www.cymru.com/Documents/bogon-bn-agg.txt 0.0.0.0/8 REJECT IP address of MX host is a bogus address 5.0.0.0/8 REJECT IP address of MX host is a bogus address 10.0.0.0/8 REJECT IP address of MX host is a bogus address 14.0.0.0/8 REJECT IP address of MX host is a bogus address 23.0.0.0/8 REJECT IP address of MX host is a bogus address 31.0.0.0/8 REJECT IP address of MX host is a bogus address 36.0.0.0/7 REJECT IP address of MX host is a bogus address 39.0.0.0/8 REJECT IP address of MX host is a bogus address 42.0.0.0/8 REJECT IP address of MX host is a bogus address 49.0.0.0/8 REJECT IP address of MX host is a bogus address 100.0.0.0/6 REJECT IP address of MX host is a bogus address 104.0.0.0/7 REJECT IP address of MX host is a bogus address 106.0.0.0/8 REJECT IP address of MX host is a bogus address 127.0.0.0/8 REJECT IP address of MX host is a bogus address 169.254.0.0/16 REJECT IP address of MX host is a bogus address 172.16.0.0/12 REJECT IP address of MX host is a bogus address 176.0.0.0/7 REJECT IP address of MX host is a bogus address 179.0.0.0/8 REJECT IP address of MX host is a bogus address 181.0.0.0/8 REJECT IP address of MX host is a bogus address 185.0.0.0/8 REJECT IP address of MX host is a bogus address 192.0.2.0/24 REJECT IP address of MX host is a bogus address 192.168.0.0/16 REJECT IP address of MX host is a bogus address 198.18.0.0/15 REJECT IP address of MX host is a bogus address 198.51.100.0/24 REJECT IP address of MX host is a bogus address 203.0.113.0/24 REJECT IP address of MX host is a bogus address 223.0.0.0/8 REJECT IP address of MX host is a bogus address 224.0.0.0/3 REJECT IP address of MX host is a bogus address
/etc/postfix/discard_ehelo_map
# borken_tls_smtp_host starttls, silent-discard 193.189.160.1 starttls, silent-discard
/etc/postfix/canonical_recipient
username@mydomain myemail
/etc/postfix/whitelist_helo_clients
127.0.0.1 OK
localhost OK
host.domain.tld OK
/etc/postfix/master.cf
submission inet n - - - - smtpd
- o smtpd_tls_security_level=encrypt
- o smtpd_sasl_auth_enable=yes
- o smtpd_client_restrictions=permit_sasl_authenticated,reject
- o milter_macro_daemon_name=ORIGINATING
-o syslog_name=postfix-submission
smtps inet n - - - - smtpd
- o smtpd_tls_wrappermode=yes
- o smtpd_sasl_auth_enable=yes
- o smtpd_client_restrictions=permit_sasl_authenticated,reject
- o milter_macro_daemon_name=ORIGINATING
