[研究]Postfix 3.5.9的預設組態 (postconf) 與預設設定檔 (main.cf) 內容 (CentOS/Rocky Linux 9.1)

[研究]Postfix 3.5.9的預設組態 (postconf) 與預設設定檔 (main.cf) 內容 (CentOS/Rocky Linux 9.1)

2023-04-13

官方網站：https://www.postfix.org/
Postfix Documentation：https://www.postfix.org/documentation.html

使用 postconf ( Postfix Configuration Utility ) 組態工具來檢查版本

[user1@localhost ~]$ postconf -d | grep mail_version mail_version = 3.5.9 milter_macro_v = $mail_name $mail_version [user1@localhost ~]$

使用 postconf ( Postfix Configuration Utility ) 檢查組態設定

[user1@localhost ~]$ postconf -d 2bounce_notice_recipient = postmaster access_map_defer_code = 450 access_map_reject_code = 554 address_verify_cache_cleanup_interval = 12h address_verify_default_transport = $default_transport address_verify_local_transport = $local_transport address_verify_map = btree:$data_directory/verify_cache address_verify_negative_cache = yes address_verify_negative_expire_time = 3d address_verify_negative_refresh_time = 3h address_verify_pending_request_limit = 5000 address_verify_poll_count = ${stress?{1}:{3}} address_verify_poll_delay = 3s address_verify_positive_expire_time = 31d address_verify_positive_refresh_time = 7d address_verify_relay_transport = $relay_transport address_verify_relayhost = $relayhost address_verify_sender = $double_bounce_sender address_verify_sender_dependent_default_transport_maps = $sender_dependent_default_transport_maps address_verify_sender_dependent_relayhost_maps = $sender_dependent_relayhost_maps address_verify_sender_ttl = 0s address_verify_service_name = verify address_verify_transport_maps = $transport_maps address_verify_virtual_transport = $virtual_transport alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases allow_mail_to_commands = alias, forward allow_mail_to_files = alias, forward allow_min_user = no allow_percent_hack = yes allow_untrusted_routing = no alternate_config_directories = always_add_missing_headers = no always_bcc = anvil_rate_time_unit = 60s anvil_status_update_time = 600s append_at_myorigin = yes append_dot_mydomain = ${{$compatibility_level} < {1} ? {yes} : {no}} application_event_drain_time = 100s authorized_flush_users = static:anyone authorized_mailq_users = static:anyone authorized_submit_users = static:anyone backwards_bounce_logfile_compatibility = yes berkeley_db_create_buffer_size = 16777216 berkeley_db_read_buffer_size = 131072 best_mx_transport = biff = yes body_checks = body_checks_size_limit = 51200 bounce_notice_recipient = postmaster bounce_queue_lifetime = 5d bounce_service_name = bounce bounce_size_limit = 50000 bounce_template_file = broken_sasl_auth_clients = no canonical_classes = envelope_sender, envelope_recipient, header_sender, header_recipient canonical_maps = cleanup_service_name = cleanup command_directory = /usr/sbin command_execution_directory = command_expansion_filter = 1234567890!@%-_=+:,./abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ command_time_limit = 1000s compatibility_level = 0 config_directory = /etc/postfix confirm_delay_cleared = no connection_cache_protocol_timeout = 5s connection_cache_service_name = scache connection_cache_status_update_time = 600s connection_cache_ttl_limit = 2s content_filter = cyrus_sasl_config_path = daemon_directory = /usr/libexec/postfix daemon_table_open_error_is_fatal = no daemon_timeout = 18000s data_directory = /var/lib/postfix debug_peer_level = 2 debug_peer_list = debugger_command = default_database_type = hash default_delivery_slot_cost = 5 default_delivery_slot_discount = 50 default_delivery_slot_loan = 3 default_delivery_status_filter = default_destination_concurrency_failed_cohort_limit = 1 default_destination_concurrency_limit = 20 default_destination_concurrency_negative_feedback = 1 default_destination_concurrency_positive_feedback = 1 default_destination_rate_delay = 0s default_destination_recipient_limit = 50 default_extra_recipient_limit = 1000 default_filter_nexthop = default_minimum_delivery_slots = 3 default_privs = nobody default_process_limit = 100 default_rbl_reply = $rbl_code Service unavailable; $rbl_class [$rbl_what] blocked using $rbl_domain${rbl_reason?; $rbl_reason} default_recipient_limit = 20000 default_recipient_refill_delay = 5s default_recipient_refill_limit = 100 default_transport = smtp default_transport_rate_delay = 0s default_verp_delimiters = += defer_code = 450 defer_service_name = defer defer_transports = delay_logging_resolution_limit = 2 delay_notice_recipient = postmaster delay_warning_time = 0h deliver_lock_attempts = 20 deliver_lock_delay = 1s destination_concurrency_feedback_debug = no detect_8bit_encoding_header = yes disable_dns_lookups = no disable_mime_input_processing = no disable_mime_output_conversion = no disable_verp_bounces = no disable_vrfy_command = no dns_ncache_ttl_fix_enable = no dnsblog_reply_delay = 0s dnsblog_service_name = dnsblog dnssec_probe = ns:. dont_remove = 0 double_bounce_sender = double-bounce duplicate_filter_limit = 1000 empty_address_default_transport_maps_lookup_key = <> empty_address_recipient = MAILER-DAEMON empty_address_relayhost_maps_lookup_key = <> enable_idna2003_compatibility = no enable_long_queue_ids = no enable_original_recipient = yes error_delivery_slot_cost = $default_delivery_slot_cost error_delivery_slot_discount = $default_delivery_slot_discount error_delivery_slot_loan = $default_delivery_slot_loan error_destination_concurrency_failed_cohort_limit = $default_destination_concurrency_failed_cohort_limit error_destination_concurrency_limit = $default_destination_concurrency_limit error_destination_concurrency_negative_feedback = $default_destination_concurrency_negative_feedback error_destination_concurrency_positive_feedback = $default_destination_concurrency_positive_feedback error_destination_rate_delay = $default_destination_rate_delay error_destination_recipient_limit = $default_destination_recipient_limit error_extra_recipient_limit = $default_extra_recipient_limit error_initial_destination_concurrency = $initial_destination_concurrency error_minimum_delivery_slots = $default_minimum_delivery_slots error_notice_recipient = postmaster error_recipient_limit = $default_recipient_limit error_recipient_refill_delay = $default_recipient_refill_delay error_recipient_refill_limit = $default_recipient_refill_limit error_service_name = error error_transport_rate_delay = $default_transport_rate_delay execution_directory_expansion_filter = 1234567890!@%-_=+:,./abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ expand_owner_alias = no export_environment = TZ MAIL_CONFIG LANG fallback_transport = fallback_transport_maps = fast_flush_domains = $relay_domains fast_flush_purge_time = 7d fast_flush_refresh_time = 12h fault_injection_code = 0 flush_service_name = flush fork_attempts = 5 fork_delay = 1s forward_expansion_filter = 1234567890!@%-_=+:,./abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ forward_path = $home/.forward${recipient_delimiter}${extension}, $home/.forward frozen_delivered_to = yes hash_queue_depth = 1 hash_queue_names = deferred, defer header_address_token_limit = 10240 header_checks = header_from_format = standard header_size_limit = 102400 helpful_warnings = yes home_mailbox = hopcount_limit = 50 html_directory = no ignore_mx_lookup_error = no import_environment = MAIL_CONFIG MAIL_DEBUG MAIL_LOGTAG TZ XAUTHORITY DISPLAY LANG=C POSTLOG_SERVICE POSTLOG_HOSTNAME in_flow_delay = 1s inet_interfaces = all inet_protocols = all info_log_address_format = external initial_destination_concurrency = 5 internal_mail_filter_classes = invalid_hostname_reject_code = 501 ipc_idle = 5s ipc_timeout = 3600s ipc_ttl = 1000s line_length_limit = 2048 lmdb_map_size = 16777216 lmtp_address_preference = any lmtp_address_verify_target = rcpt lmtp_assume_final = no lmtp_balance_inet_protocols = yes lmtp_bind_address = lmtp_bind_address6 = lmtp_body_checks = lmtp_cname_overrides_servername = no lmtp_connect_timeout = 0s lmtp_connection_cache_destinations = lmtp_connection_cache_on_demand = yes lmtp_connection_cache_time_limit = 2s lmtp_connection_reuse_count_limit = 0 lmtp_connection_reuse_time_limit = 300s lmtp_data_done_timeout = 600s lmtp_data_init_timeout = 120s lmtp_data_xfer_timeout = 180s lmtp_defer_if_no_mx_address_found = no lmtp_delivery_slot_cost = $default_delivery_slot_cost lmtp_delivery_slot_discount = $default_delivery_slot_discount lmtp_delivery_slot_loan = $default_delivery_slot_loan lmtp_delivery_status_filter = $default_delivery_status_filter lmtp_destination_concurrency_failed_cohort_limit = $default_destination_concurrency_failed_cohort_limit lmtp_destination_concurrency_limit = $default_destination_concurrency_limit lmtp_destination_concurrency_negative_feedback = $default_destination_concurrency_negative_feedback lmtp_destination_concurrency_positive_feedback = $default_destination_concurrency_positive_feedback lmtp_destination_rate_delay = $default_destination_rate_delay lmtp_destination_recipient_limit = $default_destination_recipient_limit lmtp_discard_lhlo_keyword_address_maps = lmtp_discard_lhlo_keywords = lmtp_dns_reply_filter = lmtp_dns_resolver_options = lmtp_dns_support_level = lmtp_enforce_tls = no lmtp_extra_recipient_limit = $default_extra_recipient_limit lmtp_fallback_relay = lmtp_generic_maps = lmtp_header_checks = lmtp_host_lookup = dns lmtp_initial_destination_concurrency = $initial_destination_concurrency lmtp_lhlo_name = $myhostname lmtp_lhlo_timeout = 300s lmtp_line_length_limit = 998 lmtp_mail_timeout = 300s lmtp_mime_header_checks = lmtp_minimum_delivery_slots = $default_minimum_delivery_slots lmtp_mx_address_limit = 5 lmtp_mx_session_limit = 2 lmtp_nested_header_checks = lmtp_per_record_deadline = no lmtp_pix_workaround_delay_time = 10s lmtp_pix_workaround_maps = lmtp_pix_workaround_threshold_time = 500s lmtp_pix_workarounds = disable_esmtp,delay_dotcrlf lmtp_quit_timeout = 300s lmtp_quote_rfc821_envelope = yes lmtp_randomize_addresses = yes lmtp_rcpt_timeout = 300s lmtp_recipient_limit = $default_recipient_limit lmtp_recipient_refill_delay = $default_recipient_refill_delay lmtp_recipient_refill_limit = $default_recipient_refill_limit lmtp_reply_filter = lmtp_rset_timeout = 20s lmtp_sasl_auth_cache_name = lmtp_sasl_auth_cache_time = 90d lmtp_sasl_auth_enable = no lmtp_sasl_auth_soft_bounce = yes lmtp_sasl_mechanism_filter = lmtp_sasl_password_maps = lmtp_sasl_path = lmtp_sasl_security_options = noplaintext, noanonymous lmtp_sasl_tls_security_options = $lmtp_sasl_security_options lmtp_sasl_tls_verified_security_options = $lmtp_sasl_tls_security_options lmtp_sasl_type = cyrus lmtp_send_dummy_mail_auth = no lmtp_send_xforward_command = no lmtp_sender_dependent_authentication = no lmtp_skip_5xx_greeting = yes lmtp_skip_quit_response = no lmtp_starttls_timeout = 300s lmtp_tcp_port = 24 lmtp_tls_CAfile = lmtp_tls_CApath = lmtp_tls_block_early_mail_reply = no lmtp_tls_cert_file = lmtp_tls_chain_files = lmtp_tls_ciphers = medium lmtp_tls_connection_reuse = no lmtp_tls_dcert_file = lmtp_tls_dkey_file = $lmtp_tls_dcert_file lmtp_tls_eccert_file = lmtp_tls_eckey_file = $lmtp_tls_eccert_file lmtp_tls_enforce_peername = yes lmtp_tls_exclude_ciphers = lmtp_tls_fingerprint_cert_match = lmtp_tls_fingerprint_digest = md5 lmtp_tls_force_insecure_host_tlsa_lookup = no lmtp_tls_key_file = $lmtp_tls_cert_file lmtp_tls_loglevel = 0 lmtp_tls_mandatory_ciphers = medium lmtp_tls_mandatory_exclude_ciphers = lmtp_tls_mandatory_protocols = !SSLv2, !SSLv3 lmtp_tls_note_starttls_offer = no lmtp_tls_per_site = lmtp_tls_policy_maps = lmtp_tls_protocols = !SSLv2, !SSLv3 lmtp_tls_scert_verifydepth = 9 lmtp_tls_secure_cert_match = nexthop lmtp_tls_security_level = lmtp_tls_servername = lmtp_tls_session_cache_database = lmtp_tls_session_cache_timeout = 3600s lmtp_tls_trust_anchor_file = lmtp_tls_verify_cert_match = hostname lmtp_tls_wrappermode = no lmtp_transport_rate_delay = $default_transport_rate_delay lmtp_use_tls = no lmtp_xforward_timeout = 300s local_command_shell = local_delivery_slot_cost = $default_delivery_slot_cost local_delivery_slot_discount = $default_delivery_slot_discount local_delivery_slot_loan = $default_delivery_slot_loan local_delivery_status_filter = $default_delivery_status_filter local_destination_concurrency_failed_cohort_limit = $default_destination_concurrency_failed_cohort_limit local_destination_concurrency_limit = 2 local_destination_concurrency_negative_feedback = $default_destination_concurrency_negative_feedback local_destination_concurrency_positive_feedback = $default_destination_concurrency_positive_feedback local_destination_rate_delay = $default_destination_rate_delay local_destination_recipient_limit = 1 local_extra_recipient_limit = $default_extra_recipient_limit local_header_rewrite_clients = permit_inet_interfaces local_initial_destination_concurrency = $initial_destination_concurrency local_minimum_delivery_slots = $default_minimum_delivery_slots local_recipient_limit = $default_recipient_limit local_recipient_maps = proxy:unix:passwd.byname $alias_maps local_recipient_refill_delay = $default_recipient_refill_delay local_recipient_refill_limit = $default_recipient_refill_limit local_transport = local:$myhostname local_transport_rate_delay = $default_transport_rate_delay luser_relay = mail_name = Postfix mail_owner = postfix mail_release_date = 20210117 mail_spool_directory = /var/mail mail_version = 3.5.9 mailbox_command = mailbox_command_maps = mailbox_delivery_lock = fcntl, dotlock mailbox_size_limit = 51200000 mailbox_transport = mailbox_transport_maps = maillog_file = maillog_file_compressor = gzip maillog_file_prefixes = /var, /dev/stdout maillog_file_rotate_suffix = %Y%m%d-%H%M%S mailq_path = /usr/bin/mailq manpage_directory = /usr/local/man maps_rbl_domains = maps_rbl_reject_code = 554 masquerade_classes = envelope_sender, header_sender, header_recipient masquerade_domains = masquerade_exceptions = master_service_disable = max_idle = 100s max_use = 100 maximal_backoff_time = 4000s maximal_queue_lifetime = 5d message_drop_headers = bcc, content-length, resent-bcc, return-path message_reject_characters = message_size_limit = 10240000 message_strip_characters = meta_directory = /etc/postfix milter_command_timeout = 30s milter_connect_macros = j {daemon_name} {daemon_addr} v _ milter_connect_timeout = 30s milter_content_timeout = 300s milter_data_macros = i milter_default_action = tempfail milter_end_of_data_macros = i milter_end_of_header_macros = i milter_header_checks = milter_helo_macros = {tls_version} {cipher} {cipher_bits} {cert_subject} {cert_issuer} milter_macro_daemon_name = $myhostname milter_macro_defaults = milter_macro_v = $mail_name $mail_version milter_mail_macros = i {auth_type} {auth_authen} {auth_author} {mail_addr} {mail_host} {mail_mailer} milter_protocol = 6 milter_rcpt_macros = i {rcpt_addr} {rcpt_host} {rcpt_mailer} milter_unknown_command_macros = mime_boundary_length_limit = 2048 mime_header_checks = $header_checks mime_nesting_limit = 100 minimal_backoff_time = 300s multi_instance_directories = multi_instance_enable = no multi_instance_group = multi_instance_name = multi_instance_wrapper = multi_recipient_bounce_reject_code = 550 mydestination = $myhostname, localhost.$mydomain, localhost mydomain = localdomain myhostname = localhost.localdomain mynetworks = 127.0.0.0/8 192.168.128.0/24 [::1]/128 [fe80::]/64 mynetworks_style = ${{$compatibility_level} < {2} ? {subnet} : {host}} myorigin = $myhostname nested_header_checks = $header_checks newaliases_path = /usr/bin/newaliases non_fqdn_reject_code = 504 non_smtpd_milters = notify_classes = resource, software openssl_path = openssl owner_request_special = yes parent_domain_matches_subdomains = debug_peer_list,fast_flush_domains,mynetworks,permit_mx_backup_networks,qmqpd_authorized_clients,relay_domains,smtpd_access_maps permit_mx_backup_networks = pickup_service_name = pickup pipe_delivery_status_filter = $default_delivery_status_filter plaintext_reject_code = 450 postlog_service_name = postlog postlogd_watchdog_timeout = 10s postmulti_control_commands = reload flush postmulti_start_commands = start postmulti_stop_commands = stop abort drain quick-stop postscreen_access_list = permit_mynetworks postscreen_bare_newline_action = ignore postscreen_bare_newline_enable = no postscreen_bare_newline_ttl = 30d postscreen_blacklist_action = ignore postscreen_cache_cleanup_interval = 12h postscreen_cache_map = btree:$data_directory/postscreen_cache postscreen_cache_retention_time = 7d postscreen_client_connection_count_limit = $smtpd_client_connection_count_limit postscreen_command_count_limit = 20 postscreen_command_filter = postscreen_command_time_limit = ${stress?{10}:{300}}s postscreen_disable_vrfy_command = $disable_vrfy_command postscreen_discard_ehlo_keyword_address_maps = $smtpd_discard_ehlo_keyword_address_maps postscreen_discard_ehlo_keywords = $smtpd_discard_ehlo_keywords postscreen_dnsbl_action = ignore postscreen_dnsbl_max_ttl = ${postscreen_dnsbl_ttl?{$postscreen_dnsbl_ttl}:{1}}h postscreen_dnsbl_min_ttl = 60s postscreen_dnsbl_reply_map = postscreen_dnsbl_sites = postscreen_dnsbl_threshold = 1 postscreen_dnsbl_timeout = 10s postscreen_dnsbl_whitelist_threshold = 0 postscreen_enforce_tls = $smtpd_enforce_tls postscreen_expansion_filter = $smtpd_expansion_filter postscreen_forbidden_commands = $smtpd_forbidden_commands postscreen_greet_action = ignore postscreen_greet_banner = $smtpd_banner postscreen_greet_ttl = 1d postscreen_greet_wait = ${stress?{2}:{6}}s postscreen_helo_required = $smtpd_helo_required postscreen_non_smtp_command_action = drop postscreen_non_smtp_command_enable = no postscreen_non_smtp_command_ttl = 30d postscreen_pipelining_action = enforce postscreen_pipelining_enable = no postscreen_pipelining_ttl = 30d postscreen_post_queue_limit = $default_process_limit postscreen_pre_queue_limit = $default_process_limit postscreen_reject_footer = $smtpd_reject_footer postscreen_reject_footer_maps = $smtpd_reject_footer_maps postscreen_tls_security_level = $smtpd_tls_security_level postscreen_upstream_proxy_protocol = postscreen_upstream_proxy_timeout = 5s postscreen_use_tls = $smtpd_use_tls postscreen_watchdog_timeout = 10s postscreen_whitelist_interfaces = static:all prepend_delivered_header = command, file, forward process_id = 34111 process_id_directory = pid process_name = postconf propagate_unmatched_extensions = canonical, virtual proxy_interfaces = proxy_read_maps = $local_recipient_maps $mydestination $virtual_alias_maps $virtual_alias_domains $virtual_mailbox_maps $virtual_mailbox_domains $relay_recipient_maps $relay_domains $canonical_maps $sender_canonical_maps $recipient_canonical_maps $relocated_maps $transport_maps $mynetworks $smtpd_sender_login_maps $sender_bcc_maps $recipient_bcc_maps $smtp_generic_maps $lmtp_generic_maps $alias_maps $smtpd_client_restrictions $smtpd_helo_restrictions $smtpd_sender_restrictions $smtpd_relay_restrictions $smtpd_recipient_restrictions $address_verify_sender_dependent_default_transport_maps $address_verify_sender_dependent_relayhost_maps $address_verify_transport_maps $fallback_transport_maps $lmtp_discard_lhlo_keyword_address_maps $lmtp_pix_workaround_maps $lmtp_sasl_password_maps $lmtp_tls_policy_maps $mailbox_command_maps $mailbox_transport_maps $postscreen_discard_ehlo_keyword_address_maps $rbl_reply_maps $sender_dependent_default_transport_maps $sender_dependent_relayhost_maps $smtp_discard_ehlo_keyword_address_maps $smtp_pix_workaround_maps $smtp_sasl_password_maps $smtp_tls_policy_maps $smtpd_discard_ehlo_keyword_address_maps $smtpd_milter_maps $virtual_gid_maps $virtual_uid_maps proxy_write_maps = $smtp_sasl_auth_cache_name $lmtp_sasl_auth_cache_name $address_verify_map $postscreen_cache_map proxymap_service_name = proxymap proxywrite_service_name = proxywrite qmgr_clog_warn_time = 300s qmgr_daemon_timeout = 1000s qmgr_fudge_factor = 100 qmgr_ipc_timeout = 60s qmgr_message_active_limit = 20000 qmgr_message_recipient_limit = 20000 qmgr_message_recipient_minimum = 10 qmqpd_authorized_clients = qmqpd_client_port_logging = no qmqpd_error_delay = 1s qmqpd_timeout = 300s queue_directory = /var/spool/postfix queue_file_attribute_count_limit = 100 queue_minfree = 0 queue_run_delay = 300s queue_service_name = qmgr rbl_reply_maps = readme_directory = no receive_override_options = recipient_bcc_maps = recipient_canonical_classes = envelope_recipient, header_recipient recipient_canonical_maps = recipient_delimiter = reject_code = 554 reject_tempfail_action = defer_if_permit relay_clientcerts = relay_delivery_slot_cost = $default_delivery_slot_cost relay_delivery_slot_discount = $default_delivery_slot_discount relay_delivery_slot_loan = $default_delivery_slot_loan relay_destination_concurrency_failed_cohort_limit = $default_destination_concurrency_failed_cohort_limit relay_destination_concurrency_limit = $default_destination_concurrency_limit relay_destination_concurrency_negative_feedback = $default_destination_concurrency_negative_feedback relay_destination_concurrency_positive_feedback = $default_destination_concurrency_positive_feedback relay_destination_rate_delay = $default_destination_rate_delay relay_destination_recipient_limit = $default_destination_recipient_limit relay_domains = ${{$compatibility_level} < {2} ? {$mydestination} : {}} relay_domains_reject_code = 554 relay_extra_recipient_limit = $default_extra_recipient_limit relay_initial_destination_concurrency = $initial_destination_concurrency relay_minimum_delivery_slots = $default_minimum_delivery_slots relay_recipient_limit = $default_recipient_limit relay_recipient_maps = relay_recipient_refill_delay = $default_recipient_refill_delay relay_recipient_refill_limit = $default_recipient_refill_limit relay_transport = relay relay_transport_rate_delay = $default_transport_rate_delay relayhost = relocated_maps = remote_header_rewrite_domain = require_home_directory = no reset_owner_alias = no resolve_dequoted_address = yes resolve_null_domain = no resolve_numeric_domain = no retry_delivery_slot_cost = $default_delivery_slot_cost retry_delivery_slot_discount = $default_delivery_slot_discount retry_delivery_slot_loan = $default_delivery_slot_loan retry_destination_concurrency_failed_cohort_limit = $default_destination_concurrency_failed_cohort_limit retry_destination_concurrency_limit = $default_destination_concurrency_limit retry_destination_concurrency_negative_feedback = $default_destination_concurrency_negative_feedback retry_destination_concurrency_positive_feedback = $default_destination_concurrency_positive_feedback retry_destination_rate_delay = $default_destination_rate_delay retry_destination_recipient_limit = $default_destination_recipient_limit retry_extra_recipient_limit = $default_extra_recipient_limit retry_initial_destination_concurrency = $initial_destination_concurrency retry_minimum_delivery_slots = $default_minimum_delivery_slots retry_recipient_limit = $default_recipient_limit retry_recipient_refill_delay = $default_recipient_refill_delay retry_recipient_refill_limit = $default_recipient_refill_limit retry_transport_rate_delay = $default_transport_rate_delay rewrite_service_name = rewrite sample_directory = /etc/postfix send_cyrus_sasl_authzid = no sender_bcc_maps = sender_canonical_classes = envelope_sender, header_sender sender_canonical_maps = sender_dependent_default_transport_maps = sender_dependent_relayhost_maps = sendmail_fix_line_endings = always sendmail_path = /usr/sbin/sendmail service_name = service_throttle_time = 60s setgid_group = postdrop shlib_directory = /usr/lib64/postfix show_user_unknown_table_name = yes showq_service_name = showq smtp_address_preference = any smtp_address_verify_target = rcpt smtp_always_send_ehlo = yes smtp_balance_inet_protocols = yes smtp_bind_address = smtp_bind_address6 = smtp_body_checks = smtp_cname_overrides_servername = no smtp_connect_timeout = 30s smtp_connection_cache_destinations = smtp_connection_cache_on_demand = yes smtp_connection_cache_time_limit = 2s smtp_connection_reuse_count_limit = 0 smtp_connection_reuse_time_limit = 300s smtp_data_done_timeout = 600s smtp_data_init_timeout = 120s smtp_data_xfer_timeout = 180s smtp_defer_if_no_mx_address_found = no smtp_delivery_slot_cost = $default_delivery_slot_cost smtp_delivery_slot_discount = $default_delivery_slot_discount smtp_delivery_slot_loan = $default_delivery_slot_loan smtp_delivery_status_filter = $default_delivery_status_filter smtp_destination_concurrency_failed_cohort_limit = $default_destination_concurrency_failed_cohort_limit smtp_destination_concurrency_limit = $default_destination_concurrency_limit smtp_destination_concurrency_negative_feedback = $default_destination_concurrency_negative_feedback smtp_destination_concurrency_positive_feedback = $default_destination_concurrency_positive_feedback smtp_destination_rate_delay = $default_destination_rate_delay smtp_destination_recipient_limit = $default_destination_recipient_limit smtp_discard_ehlo_keyword_address_maps = smtp_discard_ehlo_keywords = smtp_dns_reply_filter = smtp_dns_resolver_options = smtp_dns_support_level = smtp_enforce_tls = no smtp_extra_recipient_limit = $default_extra_recipient_limit smtp_fallback_relay = $fallback_relay smtp_generic_maps = smtp_header_checks = smtp_helo_name = $myhostname smtp_helo_timeout = 300s smtp_host_lookup = dns smtp_initial_destination_concurrency = $initial_destination_concurrency smtp_line_length_limit = 998 smtp_mail_timeout = 300s smtp_mime_header_checks = smtp_minimum_delivery_slots = $default_minimum_delivery_slots smtp_mx_address_limit = 5 smtp_mx_session_limit = 2 smtp_nested_header_checks = smtp_never_send_ehlo = no smtp_per_record_deadline = no smtp_pix_workaround_delay_time = 10s smtp_pix_workaround_maps = smtp_pix_workaround_threshold_time = 500s smtp_pix_workarounds = disable_esmtp,delay_dotcrlf smtp_quit_timeout = 300s smtp_quote_rfc821_envelope = yes smtp_randomize_addresses = yes smtp_rcpt_timeout = 300s smtp_recipient_limit = $default_recipient_limit smtp_recipient_refill_delay = $default_recipient_refill_delay smtp_recipient_refill_limit = $default_recipient_refill_limit smtp_reply_filter = smtp_rset_timeout = 20s smtp_sasl_auth_cache_name = smtp_sasl_auth_cache_time = 90d smtp_sasl_auth_enable = no smtp_sasl_auth_soft_bounce = yes smtp_sasl_mechanism_filter = smtp_sasl_password_maps = smtp_sasl_path = smtp_sasl_security_options = noplaintext, noanonymous smtp_sasl_tls_security_options = $smtp_sasl_security_options smtp_sasl_tls_verified_security_options = $smtp_sasl_tls_security_options smtp_sasl_type = cyrus smtp_send_dummy_mail_auth = no smtp_send_xforward_command = no smtp_sender_dependent_authentication = no smtp_skip_5xx_greeting = yes smtp_skip_quit_response = yes smtp_starttls_timeout = 300s smtp_tcp_port = smtp smtp_tls_CAfile = smtp_tls_CApath = smtp_tls_block_early_mail_reply = no smtp_tls_cert_file = smtp_tls_chain_files = smtp_tls_ciphers = medium smtp_tls_connection_reuse = no smtp_tls_dane_insecure_mx_policy = ${{$smtp_tls_security_level} == {dane} ? {dane} : {may}} smtp_tls_dcert_file = smtp_tls_dkey_file = $smtp_tls_dcert_file smtp_tls_eccert_file = smtp_tls_eckey_file = $smtp_tls_eccert_file smtp_tls_enforce_peername = yes smtp_tls_exclude_ciphers = smtp_tls_fingerprint_cert_match = smtp_tls_fingerprint_digest = md5 smtp_tls_force_insecure_host_tlsa_lookup = no smtp_tls_key_file = $smtp_tls_cert_file smtp_tls_loglevel = 0 smtp_tls_mandatory_ciphers = medium smtp_tls_mandatory_exclude_ciphers = smtp_tls_mandatory_protocols = !SSLv2, !SSLv3 smtp_tls_note_starttls_offer = no smtp_tls_per_site = smtp_tls_policy_maps = smtp_tls_protocols = !SSLv2, !SSLv3 smtp_tls_scert_verifydepth = 9 smtp_tls_secure_cert_match = nexthop, dot-nexthop smtp_tls_security_level = smtp_tls_servername = smtp_tls_session_cache_database = smtp_tls_session_cache_timeout = 3600s smtp_tls_trust_anchor_file = smtp_tls_verify_cert_match = hostname smtp_tls_wrappermode = no smtp_transport_rate_delay = $default_transport_rate_delay smtp_use_tls = no smtp_xforward_timeout = 300s smtpd_authorized_verp_clients = $authorized_verp_clients smtpd_authorized_xclient_hosts = smtpd_authorized_xforward_hosts = smtpd_banner = $myhostname ESMTP $mail_name smtpd_client_auth_rate_limit = 0 smtpd_client_connection_count_limit = 50 smtpd_client_connection_rate_limit = 0 smtpd_client_event_limit_exceptions = ${smtpd_client_connection_limit_exceptions:$mynetworks} smtpd_client_message_rate_limit = 0 smtpd_client_new_tls_session_rate_limit = 0 smtpd_client_port_logging = no smtpd_client_recipient_rate_limit = 0 smtpd_client_restrictions = smtpd_command_filter = smtpd_data_restrictions = smtpd_delay_open_until_valid_rcpt = yes smtpd_delay_reject = yes smtpd_discard_ehlo_keyword_address_maps = smtpd_discard_ehlo_keywords = smtpd_dns_reply_filter = smtpd_end_of_data_restrictions = smtpd_enforce_tls = no smtpd_error_sleep_time = 1s smtpd_etrn_restrictions = smtpd_expansion_filter = \t\40!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~ smtpd_forbidden_commands = CONNECT GET POST smtpd_hard_error_limit = ${stress?{1}:{20}} smtpd_helo_required = no smtpd_helo_restrictions = smtpd_history_flush_threshold = 100 smtpd_junk_command_limit = ${stress?{1}:{100}} smtpd_log_access_permit_actions = smtpd_milter_maps = smtpd_milters = smtpd_noop_commands = smtpd_null_access_lookup_key = <> smtpd_peername_lookup = yes smtpd_per_record_deadline = ${stress?{yes}:{no}} smtpd_policy_service_default_action = 451 4.3.5 Server configuration problem smtpd_policy_service_max_idle = 300s smtpd_policy_service_max_ttl = 1000s smtpd_policy_service_policy_context = smtpd_policy_service_request_limit = 0 smtpd_policy_service_retry_delay = 1s smtpd_policy_service_timeout = 100s smtpd_policy_service_try_limit = 2 smtpd_proxy_ehlo = $myhostname smtpd_proxy_filter = smtpd_proxy_options = smtpd_proxy_timeout = 100s smtpd_recipient_limit = 1000 smtpd_recipient_overshoot_limit = 1000 smtpd_recipient_restrictions = smtpd_reject_footer = smtpd_reject_footer_maps = smtpd_reject_unlisted_recipient = yes smtpd_reject_unlisted_sender = no smtpd_relay_restrictions = ${{$compatibility_level} < {1} ? {} : {permit_mynetworks, permit_sasl_authenticated, defer_unauth_destination}} smtpd_restriction_classes = smtpd_sasl_auth_enable = no smtpd_sasl_authenticated_header = no smtpd_sasl_exceptions_networks = smtpd_sasl_local_domain = smtpd_sasl_path = smtpd smtpd_sasl_response_limit = 12288 smtpd_sasl_security_options = noanonymous smtpd_sasl_service = smtp smtpd_sasl_tls_security_options = $smtpd_sasl_security_options smtpd_sasl_type = cyrus smtpd_sender_login_maps = smtpd_sender_restrictions = smtpd_service_name = smtpd smtpd_soft_error_limit = 10 smtpd_starttls_timeout = ${stress?{10}:{300}}s smtpd_timeout = ${stress?{10}:{300}}s smtpd_tls_CAfile = smtpd_tls_CApath = smtpd_tls_always_issue_session_ids = yes smtpd_tls_ask_ccert = no smtpd_tls_auth_only = no smtpd_tls_ccert_verifydepth = 9 smtpd_tls_cert_file = smtpd_tls_chain_files = smtpd_tls_ciphers = medium smtpd_tls_dcert_file = smtpd_tls_dh1024_param_file = smtpd_tls_dh512_param_file = smtpd_tls_dkey_file = $smtpd_tls_dcert_file smtpd_tls_eccert_file = smtpd_tls_eckey_file = $smtpd_tls_eccert_file smtpd_tls_eecdh_grade = auto smtpd_tls_exclude_ciphers = smtpd_tls_fingerprint_digest = md5 smtpd_tls_key_file = $smtpd_tls_cert_file smtpd_tls_loglevel = 0 smtpd_tls_mandatory_ciphers = medium smtpd_tls_mandatory_exclude_ciphers = smtpd_tls_mandatory_protocols = !SSLv2, !SSLv3 smtpd_tls_protocols = !SSLv2, !SSLv3 smtpd_tls_received_header = no smtpd_tls_req_ccert = no smtpd_tls_security_level = smtpd_tls_session_cache_database = smtpd_tls_session_cache_timeout = 3600s smtpd_tls_wrappermode = no smtpd_upstream_proxy_protocol = smtpd_upstream_proxy_timeout = 5s smtpd_use_tls = no smtputf8_autodetect_classes = sendmail, verify smtputf8_enable = ${{$compatibility_level} < {1} ? {no} : {yes}} soft_bounce = no stale_lock_time = 500s stress = strict_7bit_headers = no strict_8bitmime = no strict_8bitmime_body = no strict_mailbox_ownership = yes strict_mime_encoding_domain = no strict_rfc821_envelopes = no strict_smtputf8 = no sun_mailtool_compatibility = no swap_bangpath = yes syslog_facility = mail syslog_name = ${multi_instance_name?{$multi_instance_name}:{postfix}} tcp_windowsize = 0 tls_append_default_CA = no tls_daemon_random_bytes = 32 tls_dane_digests = sha512 sha256 tls_disable_workarounds = tls_eecdh_auto_curves = X25519 X448 prime256v1 secp521r1 secp384r1 tls_eecdh_strong_curve = prime256v1 tls_eecdh_ultra_curve = secp384r1 tls_export_cipherlist = aNULL:-aNULL:HIGH:MEDIUM:LOW:EXPORT:+RC4:@STRENGTH tls_fast_shutdown_enable = yes tls_high_cipherlist = aNULL:-aNULL:HIGH:@STRENGTH tls_legacy_public_key_fingerprints = no tls_low_cipherlist = aNULL:-aNULL:HIGH:MEDIUM:LOW:+RC4:@STRENGTH tls_medium_cipherlist = aNULL:-aNULL:HIGH:MEDIUM:+RC4:@STRENGTH tls_null_cipherlist = eNULL:!aNULL tls_preempt_cipherlist = no tls_random_bytes = 32 tls_random_exchange_name = ${data_directory}/prng_exch tls_random_prng_update_period = 3600s tls_random_reseed_period = 3600s tls_random_source = dev:/dev/urandom tls_server_sni_maps = tls_session_ticket_cipher = aes-256-cbc tls_ssl_options = tls_wildcard_matches_multiple_labels = yes tlsmgr_service_name = tlsmgr tlsproxy_client_CAfile = $smtp_tls_CAfile tlsproxy_client_CApath = $smtp_tls_CApath tlsproxy_client_cert_file = $smtp_tls_cert_file tlsproxy_client_chain_files = $smtp_tls_chain_files tlsproxy_client_dcert_file = $smtp_tls_dcert_file tlsproxy_client_dkey_file = $smtp_tls_dkey_file tlsproxy_client_eccert_file = $smtp_tls_eccert_file tlsproxy_client_eckey_file = $smtp_tls_eckey_file tlsproxy_client_enforce_tls = $smtp_enforce_tls tlsproxy_client_fingerprint_digest = $smtp_tls_fingerprint_digest tlsproxy_client_key_file = $smtp_tls_key_file tlsproxy_client_level = $smtp_tls_security_level tlsproxy_client_loglevel = $smtp_tls_loglevel tlsproxy_client_loglevel_parameter = smtp_tls_loglevel tlsproxy_client_per_site = $smtp_tls_per_site tlsproxy_client_policy = $smtp_tls_policy_maps tlsproxy_client_scert_verifydepth = $smtp_tls_scert_verifydepth tlsproxy_client_use_tls = $smtp_use_tls tlsproxy_enforce_tls = $smtpd_enforce_tls tlsproxy_service_name = tlsproxy tlsproxy_tls_CAfile = $smtpd_tls_CAfile tlsproxy_tls_CApath = $smtpd_tls_CApath tlsproxy_tls_always_issue_session_ids = $smtpd_tls_always_issue_session_ids tlsproxy_tls_ask_ccert = $smtpd_tls_ask_ccert tlsproxy_tls_ccert_verifydepth = $smtpd_tls_ccert_verifydepth tlsproxy_tls_cert_file = $smtpd_tls_cert_file tlsproxy_tls_chain_files = $smtpd_tls_chain_files tlsproxy_tls_ciphers = $smtpd_tls_ciphers tlsproxy_tls_dcert_file = $smtpd_tls_dcert_file tlsproxy_tls_dh1024_param_file = $smtpd_tls_dh1024_param_file tlsproxy_tls_dh512_param_file = $smtpd_tls_dh512_param_file tlsproxy_tls_dkey_file = $smtpd_tls_dkey_file tlsproxy_tls_eccert_file = $smtpd_tls_eccert_file tlsproxy_tls_eckey_file = $smtpd_tls_eckey_file tlsproxy_tls_eecdh_grade = $smtpd_tls_eecdh_grade tlsproxy_tls_exclude_ciphers = $smtpd_tls_exclude_ciphers tlsproxy_tls_fingerprint_digest = $smtpd_tls_fingerprint_digest tlsproxy_tls_key_file = $smtpd_tls_key_file tlsproxy_tls_loglevel = $smtpd_tls_loglevel tlsproxy_tls_mandatory_ciphers = $smtpd_tls_mandatory_ciphers tlsproxy_tls_mandatory_exclude_ciphers = $smtpd_tls_mandatory_exclude_ciphers tlsproxy_tls_mandatory_protocols = $smtpd_tls_mandatory_protocols tlsproxy_tls_protocols = $smtpd_tls_protocols tlsproxy_tls_req_ccert = $smtpd_tls_req_ccert tlsproxy_tls_security_level = $smtpd_tls_security_level tlsproxy_use_tls = $smtpd_use_tls tlsproxy_watchdog_timeout = 10s trace_service_name = trace transport_maps = transport_retry_time = 60s trigger_timeout = 10s undisclosed_recipients_header = unknown_address_reject_code = 450 unknown_address_tempfail_action = $reject_tempfail_action unknown_client_reject_code = 450 unknown_helo_hostname_tempfail_action = $reject_tempfail_action unknown_hostname_reject_code = 450 unknown_local_recipient_reject_code = 550 unknown_relay_recipient_reject_code = 550 unknown_virtual_alias_reject_code = 550 unknown_virtual_mailbox_reject_code = 550 unverified_recipient_defer_code = 450 unverified_recipient_reject_code = 450 unverified_recipient_reject_reason = unverified_recipient_tempfail_action = $reject_tempfail_action unverified_sender_defer_code = 450 unverified_sender_reject_code = 450 unverified_sender_reject_reason = unverified_sender_tempfail_action = $reject_tempfail_action verp_delimiter_filter = -=+ virtual_alias_address_length_limit = 1000 virtual_alias_domains = $virtual_alias_maps virtual_alias_expansion_limit = 1000 virtual_alias_maps = $virtual_maps virtual_alias_recursion_limit = 1000 virtual_delivery_slot_cost = $default_delivery_slot_cost virtual_delivery_slot_discount = $default_delivery_slot_discount virtual_delivery_slot_loan = $default_delivery_slot_loan virtual_delivery_status_filter = $default_delivery_status_filter virtual_destination_concurrency_failed_cohort_limit = $default_destination_concurrency_failed_cohort_limit virtual_destination_concurrency_limit = $default_destination_concurrency_limit virtual_destination_concurrency_negative_feedback = $default_destination_concurrency_negative_feedback virtual_destination_concurrency_positive_feedback = $default_destination_concurrency_positive_feedback virtual_destination_rate_delay = $default_destination_rate_delay virtual_destination_recipient_limit = $default_destination_recipient_limit virtual_extra_recipient_limit = $default_extra_recipient_limit virtual_gid_maps = virtual_initial_destination_concurrency = $initial_destination_concurrency virtual_mailbox_base = virtual_mailbox_domains = $virtual_mailbox_maps virtual_mailbox_limit = 51200000 virtual_mailbox_lock = fcntl, dotlock virtual_mailbox_maps = virtual_minimum_delivery_slots = $default_minimum_delivery_slots virtual_minimum_uid = 100 virtual_recipient_limit = $default_recipient_limit virtual_recipient_refill_delay = $default_recipient_refill_delay virtual_recipient_refill_limit = $default_recipient_refill_limit virtual_transport = virtual virtual_transport_rate_delay = $default_transport_rate_delay virtual_uid_maps = [user1@localhost ~]$

********************************************************************************

預設設定檔內容

[user1@localhost ~]$ vi /etc/postfix/main.cf

內容

# Global Postfix configuration file. This file lists only a subset # of all parameters. For the syntax, and for a complete parameter # list, see the postconf(5) manual page (command: "man 5 postconf"). # # For common configuration examples, see BASIC_CONFIGURATION_README # and STANDARD_CONFIGURATION_README. To find these documents, use # the command "postconf html_directory readme_directory", or go to # http://www.postfix.org/BASIC_CONFIGURATION_README.html etc. # # For best results, change no more than 2-3 parameters at a time, # and test if Postfix still works after every change. # COMPATIBILITY # # The compatibility_level determines what default settings Postfix # will use for main.cf and master.cf settings. These defaults will # change over time. # # To avoid breaking things, Postfix will use backwards-compatible # default settings and log where it uses those old backwards-compatible # default settings, until the system administrator has determined # if any backwards-compatible default settings need to be made # permanent in main.cf or master.cf. # # When this review is complete, update the compatibility_level setting # below as recommended in the RELEASE_NOTES file. # # The level below is what should be used with new (not upgrade) installs. # compatibility_level = 2 # SOFT BOUNCE # # The soft_bounce parameter provides a limited safety net for # testing. When soft_bounce is enabled, mail will remain queued that # would otherwise bounce. This parameter disables locally-generated # bounces, and prevents the SMTP server from rejecting mail permanently # (by changing 5xx replies into 4xx replies). However, soft_bounce # is no cure for address rewriting mistakes or mail routing mistakes. # #soft_bounce = no # LOCAL PATHNAME INFORMATION # # The queue_directory specifies the location of the Postfix queue. # This is also the root directory of Postfix daemons that run chrooted. # See the files in examples/chroot-setup for setting up Postfix chroot # environments on different UNIX systems. # queue_directory = /var/spool/postfix # The command_directory parameter specifies the location of all # postXXX commands. # command_directory = /usr/sbin # The daemon_directory parameter specifies the location of all Postfix # daemon programs (i.e. programs listed in the master.cf file). This # directory must be owned by root. # daemon_directory = /usr/libexec/postfix # The data_directory parameter specifies the location of Postfix-writable # data files (caches, random numbers). This directory must be owned # by the mail_owner account (see below). # data_directory = /var/lib/postfix # QUEUE AND PROCESS OWNERSHIP # # The mail_owner parameter specifies the owner of the Postfix queue # and of most Postfix daemon processes. Specify the name of a user # account THAT DOES NOT SHARE ITS USER OR GROUP ID WITH OTHER ACCOUNTS # AND THAT OWNS NO OTHER FILES OR PROCESSES ON THE SYSTEM. In # particular, don't specify nobody or daemon. PLEASE USE A DEDICATED # USER. # mail_owner = postfix # The default_privs parameter specifies the default rights used by # the local delivery agent for delivery to external file or command. # These rights are used in the absence of a recipient user context. # DO NOT SPECIFY A PRIVILEGED USER OR THE POSTFIX OWNER. # #default_privs = nobody # INTERNET HOST AND DOMAIN NAMES # # The myhostname parameter specifies the internet hostname of this # mail system. The default is to use the fully-qualified domain name # from gethostname(). $myhostname is used as a default value for many # other configuration parameters. # #myhostname = host.domain.tld #myhostname = virtual.domain.tld # The mydomain parameter specifies the local internet domain name. # The default is to use $myhostname minus the first component. # $mydomain is used as a default value for many other configuration # parameters. # #mydomain = domain.tld # SENDING MAIL # # The myorigin parameter specifies the domain that locally-posted # mail appears to come from. The default is to append $myhostname, # which is fine for small sites. If you run a domain with multiple # machines, you should (1) change this to $mydomain and (2) set up # a domain-wide alias database that aliases each user to # user@that.users.mailhost. # # For the sake of consistency between sender and recipient addresses, # myorigin also specifies the default domain name that is appended # to recipient addresses that have no @domain part. # #myorigin = $myhostname #myorigin = $mydomain # RECEIVING MAIL # The inet_interfaces parameter specifies the network interface # addresses that this mail system receives mail on. By default, # the software claims all active interfaces on the machine. The # parameter also controls delivery of mail to user@[ip.address]. # # See also the proxy_interfaces parameter, for network addresses that # are forwarded to us via a proxy or network address translator. # # Note: you need to stop/start Postfix when this parameter changes. # #inet_interfaces = all #inet_interfaces = $myhostname #inet_interfaces = $myhostname, localhost inet_interfaces = localhost # Enable IPv4, and IPv6 if supported inet_protocols = all # The proxy_interfaces parameter specifies the network interface # addresses that this mail system receives mail on by way of a # proxy or network address translation unit. This setting extends # the address list specified with the inet_interfaces parameter. # # You must specify your proxy/NAT addresses when your system is a # backup MX host for other domains, otherwise mail delivery loops # will happen when the primary MX host is down. # #proxy_interfaces = #proxy_interfaces = 1.2.3.4 # The mydestination parameter specifies the list of domains that this # machine considers itself the final destination for. # # These domains are routed to the delivery agent specified with the # local_transport parameter setting. By default, that is the UNIX # compatible delivery agent that lookups all recipients in /etc/passwd # and /etc/aliases or their equivalent. # # The default is $myhostname + localhost.$mydomain + localhost. On # a mail domain gateway, you should also include $mydomain. # # Do not specify the names of virtual domains - those domains are # specified elsewhere (see VIRTUAL_README). # # Do not specify the names of domains that this machine is backup MX # host for. Specify those names via the relay_domains settings for # the SMTP server, or use permit_mx_backup if you are lazy (see # STANDARD_CONFIGURATION_README). # # The local machine is always the final destination for mail addressed # to user@[the.net.work.address] of an interface that the mail system # receives mail on (see the inet_interfaces parameter). # # Specify a list of host or domain names, /file/name or type:table # patterns, separated by commas and/or whitespace. A /file/name # pattern is replaced by its contents; a type:table is matched when # a name matches a lookup key (the right-hand side is ignored). # Continue long lines by starting the next line with whitespace. # # See also below, section "REJECTING MAIL FOR UNKNOWN LOCAL USERS". # mydestination = $myhostname, localhost.$mydomain, localhost #mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain #mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain, # mail.$mydomain, www.$mydomain, ftp.$mydomain # REJECTING MAIL FOR UNKNOWN LOCAL USERS # # The local_recipient_maps parameter specifies optional lookup tables # with all names or addresses of users that are local with respect # to $mydestination, $inet_interfaces or $proxy_interfaces. # # If this parameter is defined, then the SMTP server will reject # mail for unknown local users. This parameter is defined by default. # # To turn off local recipient checking in the SMTP server, specify # local_recipient_maps = (i.e. empty). # # The default setting assumes that you use the default Postfix local # delivery agent for local delivery. You need to update the # local_recipient_maps setting if: # # - You define $mydestination domain recipients in files other than # /etc/passwd, /etc/aliases, or the $virtual_alias_maps files. # For example, you define $mydestination domain recipients in # the $virtual_mailbox_maps files. # # - You redefine the local delivery agent in master.cf. # # - You redefine the "local_transport" setting in main.cf. # # - You use the "luser_relay", "mailbox_transport", or "fallback_transport" # feature of the Postfix local delivery agent (see local(8)). # # Details are described in the LOCAL_RECIPIENT_README file. # # Beware: if the Postfix SMTP server runs chrooted, you probably have # to access the passwd file via the proxymap service, in order to # overcome chroot restrictions. The alternative, having a copy of # the system passwd file in the chroot jail is just not practical. # # The right-hand side of the lookup tables is conveniently ignored. # In the left-hand side, specify a bare username, an @domain.tld # wild-card, or specify a user@domain.tld address. # #local_recipient_maps = unix:passwd.byname $alias_maps #local_recipient_maps = proxy:unix:passwd.byname $alias_maps #local_recipient_maps = # The unknown_local_recipient_reject_code specifies the SMTP server # response code when a recipient domain matches $mydestination or # ${proxy,inet}_interfaces, while $local_recipient_maps is non-empty # and the recipient address or address local-part is not found. # # The default setting is 550 (reject mail) but it is safer to start # with 450 (try again later) until you are certain that your # local_recipient_maps settings are OK. # unknown_local_recipient_reject_code = 550 # TRUST AND RELAY CONTROL # The mynetworks parameter specifies the list of "trusted" SMTP # clients that have more privileges than "strangers". # # In particular, "trusted" SMTP clients are allowed to relay mail # through Postfix. See the smtpd_recipient_restrictions parameter # in postconf(5). # # You can specify the list of "trusted" network addresses by hand # or you can let Postfix do it for you (which is the default). # # By default (mynetworks_style = subnet), Postfix "trusts" SMTP # clients in the same IP subnetworks as the local machine. # On Linux, this works correctly only with interfaces specified # with the "ifconfig" command. # # Specify "mynetworks_style = class" when Postfix should "trust" SMTP # clients in the same IP class A/B/C networks as the local machine. # Don't do this with a dialup site - it would cause Postfix to "trust" # your entire provider's network. Instead, specify an explicit # mynetworks list by hand, as described below. # # Specify "mynetworks_style = host" when Postfix should "trust" # only the local machine. # #mynetworks_style = class #mynetworks_style = subnet #mynetworks_style = host # Alternatively, you can specify the mynetworks list by hand, in # which case Postfix ignores the mynetworks_style setting. # # Specify an explicit list of network/netmask patterns, where the # mask specifies the number of bits in the network part of a host # address. # # You can also specify the absolute pathname of a pattern file instead # of listing the patterns here. Specify type:table for table-based lookups # (the value on the table right-hand side is not used). # #mynetworks = 168.100.189.0/28, 127.0.0.0/8 #mynetworks = $config_directory/mynetworks #mynetworks = hash:/etc/postfix/network_table # The relay_domains parameter restricts what destinations this system will # relay mail to. See the smtpd_recipient_restrictions description in # postconf(5) for detailed information. # # By default, Postfix relays mail # - from "trusted" clients (IP address matches $mynetworks) to any destination, # - from "untrusted" clients to destinations that match $relay_domains or # subdomains thereof, except addresses with sender-specified routing. # The default relay_domains value is $mydestination. # # In addition to the above, the Postfix SMTP server by default accepts mail # that Postfix is final destination for: # - destinations that match $inet_interfaces or $proxy_interfaces, # - destinations that match $mydestination # - destinations that match $virtual_alias_domains, # - destinations that match $virtual_mailbox_domains. # These destinations do not need to be listed in $relay_domains. # # Specify a list of hosts or domains, /file/name patterns or type:name # lookup tables, separated by commas and/or whitespace. Continue # long lines by starting the next line with whitespace. A file name # is replaced by its contents; a type:name table is matched when a # (parent) domain appears as lookup key. # # NOTE: Postfix will not automatically forward mail for domains that # list this system as their primary or backup MX host. See the # permit_mx_backup restriction description in postconf(5). # #relay_domains = $mydestination # INTERNET OR INTRANET # The relayhost parameter specifies the default host to send mail to # when no entry is matched in the optional transport(5) table. When # no relayhost is given, mail is routed directly to the destination. # # On an intranet, specify the organizational domain name. If your # internal DNS uses no MX records, specify the name of the intranet # gateway host instead. # # In the case of SMTP, specify a domain, host, host:port, [host]:port, # [address] or [address]:port; the form [host] turns off MX lookups. # # If you're connected via UUCP, see also the default_transport parameter. # #relayhost = $mydomain #relayhost = [gateway.my.domain] #relayhost = [mailserver.isp.tld] #relayhost = uucphost #relayhost = [an.ip.add.ress] # REJECTING UNKNOWN RELAY USERS # # The relay_recipient_maps parameter specifies optional lookup tables # with all addresses in the domains that match $relay_domains. # # If this parameter is defined, then the SMTP server will reject # mail for unknown relay users. This feature is off by default. # # The right-hand side of the lookup tables is conveniently ignored. # In the left-hand side, specify an @domain.tld wild-card, or specify # a user@domain.tld address. # #relay_recipient_maps = hash:/etc/postfix/relay_recipients # INPUT RATE CONTROL # # The in_flow_delay configuration parameter implements mail input # flow control. This feature is turned on by default, although it # still needs further development (it's disabled on SCO UNIX due # to an SCO bug). # # A Postfix process will pause for $in_flow_delay seconds before # accepting a new message, when the message arrival rate exceeds the # message delivery rate. With the default 100 SMTP server process # limit, this limits the mail inflow to 100 messages a second more # than the number of messages delivered per second. # # Specify 0 to disable the feature. Valid delays are 0..10. # #in_flow_delay = 1s # ADDRESS REWRITING # # The ADDRESS_REWRITING_README document gives information about # address masquerading or other forms of address rewriting including # username->Firstname.Lastname mapping. # ADDRESS REDIRECTION (VIRTUAL DOMAIN) # # The VIRTUAL_README document gives information about the many forms # of domain hosting that Postfix supports. # "USER HAS MOVED" BOUNCE MESSAGES # # See the discussion in the ADDRESS_REWRITING_README document. # TRANSPORT MAP # # See the discussion in the ADDRESS_REWRITING_README document. # ALIAS DATABASE # # The alias_maps parameter specifies the list of alias databases used # by the local delivery agent. The default list is system dependent. # # On systems with NIS, the default is to search the local alias # database, then the NIS alias database. See aliases(5) for syntax # details. # # If you change the alias database, run "postalias /etc/aliases" (or # wherever your system stores the mail alias file), or simply run # "newaliases" to build the necessary DBM or DB file. # # It will take a minute or so before changes become visible. Use # "postfix reload" to eliminate the delay. # #alias_maps = dbm:/etc/aliases alias_maps = hash:/etc/aliases #alias_maps = hash:/etc/aliases, nis:mail.aliases #alias_maps = netinfo:/aliases # The alias_database parameter specifies the alias database(s) that # are built with "newaliases" or "sendmail -bi". This is a separate # configuration parameter, because alias_maps (see above) may specify # tables that are not necessarily all under control by Postfix. # #alias_database = dbm:/etc/aliases #alias_database = dbm:/etc/mail/aliases alias_database = hash:/etc/aliases #alias_database = hash:/etc/aliases, hash:/opt/majordomo/aliases # ADDRESS EXTENSIONS (e.g., user+foo) # # The recipient_delimiter parameter specifies the separator between # user names and address extensions (user+foo). See canonical(5), # local(8), relocated(5) and virtual(5) for the effects this has on # aliases, canonical, virtual, relocated and .forward file lookups. # Basically, the software tries user+foo and .forward+foo before # trying user and .forward. # #recipient_delimiter = + # DELIVERY TO MAILBOX # # The home_mailbox parameter specifies the optional pathname of a # mailbox file relative to a user's home directory. The default # mailbox file is /var/spool/mail/user or /var/mail/user. Specify # "Maildir/" for qmail-style delivery (the / is required). # #home_mailbox = Mailbox #home_mailbox = Maildir/ # The mail_spool_directory parameter specifies the directory where # UNIX-style mailboxes are kept. The default setting depends on the # system type. # #mail_spool_directory = /var/mail #mail_spool_directory = /var/spool/mail # The mailbox_command parameter specifies the optional external # command to use instead of mailbox delivery. The command is run as # the recipient with proper HOME, SHELL and LOGNAME environment settings. # Exception: delivery for root is done as $default_user. # # Other environment variables of interest: USER (recipient username), # EXTENSION (address extension), DOMAIN (domain part of address), # and LOCAL (the address localpart). # # Unlike other Postfix configuration parameters, the mailbox_command # parameter is not subjected to $parameter substitutions. This is to # make it easier to specify shell syntax (see example below). # # Avoid shell meta characters because they will force Postfix to run # an expensive shell process. Procmail alone is expensive enough. # # IF YOU USE THIS TO DELIVER MAIL SYSTEM-WIDE, YOU MUST SET UP AN # ALIAS THAT FORWARDS MAIL FOR ROOT TO A REAL USER. # #mailbox_command = /some/where/procmail #mailbox_command = /some/where/procmail -a "$EXTENSION" # The mailbox_transport specifies the optional transport in master.cf # to use after processing aliases and .forward files. This parameter # has precedence over the mailbox_command, fallback_transport and # luser_relay parameters. # # Specify a string of the form transport:nexthop, where transport is # the name of a mail delivery transport defined in master.cf. The # :nexthop part is optional. For more details see the sample transport # configuration file. # # NOTE: if you use this feature for accounts not in the UNIX password # file, then you must update the "local_recipient_maps" setting in # the main.cf file, otherwise the SMTP server will reject mail for # non-UNIX accounts with "User unknown in local recipient table". # # Cyrus IMAP over LMTP. Specify ``lmtpunix cmd="lmtpd" # listen="/var/imap/socket/lmtp" prefork=0'' in cyrus.conf. #mailbox_transport = lmtp:unix:/var/lib/imap/socket/lmtp # If using the cyrus-imapd IMAP server deliver local mail to the IMAP # server using LMTP (Local Mail Transport Protocol), this is prefered # over the older cyrus deliver program by setting the # mailbox_transport as below: # # mailbox_transport = lmtp:unix:/var/lib/imap/socket/lmtp # # The efficiency of LMTP delivery for cyrus-imapd can be enhanced via # these settings. # # local_destination_recipient_limit = 300 # local_destination_concurrency_limit = 5 # # Of course you should adjust these settings as appropriate for the # capacity of the hardware you are using. The recipient limit setting # can be used to take advantage of the single instance message store # capability of Cyrus. The concurrency limit can be used to control # how many simultaneous LMTP sessions will be permitted to the Cyrus # message store. # # Cyrus IMAP via command line. Uncomment the "cyrus...pipe" and # subsequent line in master.cf. #mailbox_transport = cyrus # The fallback_transport specifies the optional transport in master.cf # to use for recipients that are not found in the UNIX passwd database. # This parameter has precedence over the luser_relay parameter. # # Specify a string of the form transport:nexthop, where transport is # the name of a mail delivery transport defined in master.cf. The # :nexthop part is optional. For more details see the sample transport # configuration file. # # NOTE: if you use this feature for accounts not in the UNIX password # file, then you must update the "local_recipient_maps" setting in # the main.cf file, otherwise the SMTP server will reject mail for # non-UNIX accounts with "User unknown in local recipient table". # #fallback_transport = lmtp:unix:/var/lib/imap/socket/lmtp #fallback_transport = # The luser_relay parameter specifies an optional destination address # for unknown recipients. By default, mail for unknown@$mydestination, # unknown@[$inet_interfaces] or unknown@[$proxy_interfaces] is returned # as undeliverable. # # The following expansions are done on luser_relay: $user (recipient # username), $shell (recipient shell), $home (recipient home directory), # $recipient (full recipient address), $extension (recipient address # extension), $domain (recipient domain), $local (entire recipient # localpart), $recipient_delimiter. Specify ${name?value} or # ${name:value} to expand value only when $name does (does not) exist. # # luser_relay works only for the default Postfix local delivery agent. # # NOTE: if you use this feature for accounts not in the UNIX password # file, then you must specify "local_recipient_maps =" (i.e. empty) in # the main.cf file, otherwise the SMTP server will reject mail for # non-UNIX accounts with "User unknown in local recipient table". # #luser_relay = $user@other.host #luser_relay = $local@other.host #luser_relay = admin+$local # JUNK MAIL CONTROLS # # The controls listed here are only a very small subset. The file # SMTPD_ACCESS_README provides an overview. # The header_checks parameter specifies an optional table with patterns # that each logical message header is matched against, including # headers that span multiple physical lines. # # By default, these patterns also apply to MIME headers and to the # headers of attached messages. With older Postfix versions, MIME and # attached message headers were treated as body text. # # For details, see "man header_checks". # #header_checks = regexp:/etc/postfix/header_checks # FAST ETRN SERVICE # # Postfix maintains per-destination logfiles with information about # deferred mail, so that mail can be flushed quickly with the SMTP # "ETRN domain.tld" command, or by executing "sendmail -qRdomain.tld". # See the ETRN_README document for a detailed description. # # The fast_flush_domains parameter controls what destinations are # eligible for this service. By default, they are all domains that # this server is willing to relay mail to. # #fast_flush_domains = $relay_domains # SHOW SOFTWARE VERSION OR NOT # # The smtpd_banner parameter specifies the text that follows the 220 # code in the SMTP server's greeting banner. Some people like to see # the mail version advertised. By default, Postfix shows no version. # # You MUST specify $myhostname at the start of the text. That is an # RFC requirement. Postfix itself does not care. # #smtpd_banner = $myhostname ESMTP $mail_name #smtpd_banner = $myhostname ESMTP $mail_name ($mail_version) # PARALLEL DELIVERY TO THE SAME DESTINATION # # How many parallel deliveries to the same user or domain? With local # delivery, it does not make sense to do massively parallel delivery # to the same user, because mailbox updates must happen sequentially, # and expensive pipelines in .forward files can cause disasters when # too many are run at the same time. With SMTP deliveries, 10 # simultaneous connections to the same domain could be sufficient to # raise eyebrows. # # Each message delivery transport has its XXX_destination_concurrency_limit # parameter. The default is $default_destination_concurrency_limit for # most delivery transports. For the local delivery agent the default is 2. #local_destination_concurrency_limit = 2 #default_destination_concurrency_limit = 20 # DEBUGGING CONTROL # # The debug_peer_level parameter specifies the increment in verbose # 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 # The debug_peer_list parameter specifies an optional list of domain # or network patterns, /file/name patterns or type:name tables. When # an SMTP client or server host name or address matches a pattern, # increase the verbose logging level by the amount specified in the # debug_peer_level parameter. # #debug_peer_list = 127.0.0.1 #debug_peer_list = some.domain # The debugger_command specifies the external command that is executed # when a Postfix daemon program is run with the -D option. # # Use "command .. & sleep 5" so that the debugger can attach before # the process marches on. If you use an X-based debugger, be sure to # set up your XAUTHORITY environment variable before starting Postfix. # debugger_command = PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin ddd $daemon_directory/$process_name $process_id & sleep 5 # If you can't use X, use this to capture the call stack when a # daemon crashes. The result is in a file in the configuration # directory, and is named after the process name and the process ID. # # debugger_command = # PATH=/bin:/usr/bin:/usr/local/bin; export PATH; (echo cont; # echo where) | gdb $daemon_directory/$process_name $process_id 2>&1 # >$config_directory/$process_name.$process_id.log & sleep 5 # # Another possibility is to run gdb under a detached screen session. # To attach to the screen session, su root and run "screen -r # <id_string>" where <id_string> uniquely matches one of the detached # sessions (from "screen -list"). # # debugger_command = # PATH=/bin:/usr/bin:/sbin:/usr/sbin; export PATH; screen # -dmS $process_name gdb $daemon_directory/$process_name # $process_id & sleep 1 # INSTALL-TIME CONFIGURATION INFORMATION # # The following parameters are used when installing a new Postfix version. # # sendmail_path: The full pathname of the Postfix sendmail command. # This is the Sendmail-compatible mail posting interface. # sendmail_path = /usr/sbin/sendmail.postfix # newaliases_path: The full pathname of the Postfix newaliases command. # This is the Sendmail-compatible command to build alias databases. # newaliases_path = /usr/bin/newaliases.postfix # mailq_path: The full pathname of the Postfix mailq command. This # is the Sendmail-compatible mail queue listing command. # mailq_path = /usr/bin/mailq.postfix # setgid_group: The group for mail submission and queue management # commands. This must be a group name with a numerical group ID that # is not shared with other accounts, not even with the Postfix account. # setgid_group = postdrop # html_directory: The location of the Postfix HTML documentation. # html_directory = no # manpage_directory: The location of the Postfix on-line manual pages. # manpage_directory = /usr/share/man # sample_directory: The location of the Postfix sample configuration files. # This parameter is obsolete as of Postfix 2.1. # sample_directory = /usr/share/doc/postfix/samples # readme_directory: The location of the Postfix README files. # readme_directory = /usr/share/doc/postfix/README_FILES # TLS CONFIGURATION # # Basic Postfix TLS configuration by default with self-signed certificate # for inbound SMTP and also opportunistic TLS for outbound SMTP. # The full pathname of a file with the Postfix SMTP server RSA certificate # in PEM format. Intermediate certificates should be included in general, # the server certificate first, then the issuing CA(s) (bottom-up order). # smtpd_tls_cert_file = /etc/pki/tls/certs/postfix.pem # The full pathname of a file with the Postfix SMTP server RSA private key # in PEM format. The private key must be accessible without a pass-phrase, # i.e. it must not be encrypted. # smtpd_tls_key_file = /etc/pki/tls/private/postfix.key # Announce STARTTLS support to remote SMTP clients, but do not require that # clients use TLS encryption (opportunistic TLS inbound). # smtpd_tls_security_level = may # Directory with PEM format Certification Authority certificates that the # Postfix SMTP client uses to verify a remote SMTP server certificate. # smtp_tls_CApath = /etc/pki/tls/certs # The full pathname of a file containing CA certificates of root CAs # trusted to sign either remote SMTP server certificates or intermediate CA # certificates. # smtp_tls_CAfile = /etc/pki/tls/certs/ca-bundle.crt # Use TLS if this is supported by the remote SMTP server, otherwise use # plaintext (opportunistic TLS outbound). # smtp_tls_security_level = may meta_directory = /etc/postfix shlib_directory = /usr/lib64/postfix

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