作者 主題: DNS正解和反解不同E-MAIL被擋的問題  (閱讀 1583 次)

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tonyvan123

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DNS正解和反解不同E-MAIL被擋的問題
« 於: 2017-01-13 11:28 »
最近常遇上的問題,如第2點是燦坤的E-MAIL(replies@e.tkec.com.tw這只是例子之一,其實從去年11月類似狀況爆增,得到的回覆是DNS外包)
,但卻一直被擋下,想請教以下問題
第一. 如果正解.反解.MX Record不同的E-MAIL也開放可以收下來,會有什麼後果? 必需向主管解釋
第二. 請問是main.cf中的那個參數擋下的

« 上次編輯: 2017-01-13 11:39 由 tonyvan123 »

tonyvan123

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Re: DNS正解和反解不同E-MAIL被擋的問題
« 回覆 #1 於: 2017-01-13 11:31 »
1. LOG
Jan 12 00:00:03 ms7 postfix/smtpd[31363]: NOQUEUE: reject: RCPT from unknown[202.133.232.84]: 450 4.7.1 Client host rejected: cannot find your hostname, [202.133.232.84]; from=<rep
lies@e.tkec.com.tw> to=<andyxxx@xxxx.com.tw> proto=ESMTP helo=<mta107s1.e.flydove.net>

2. DNS 結果
C:\Users\tonyvan>nslookup
預設伺服器:  TONY-RT-N18.workgroup
Address:  10.6.17.254

> set type=PTR
> 202.133.232.84
伺服器:  TONY-RT-N18.workgroup
Address:  10.6.17.254

未經授權的回答:
84.232.133.202.in-addr.arpa     name = mta107s1.e.flydove.net
> set type=A
> e.tkec.com.tw
伺服器:  TONY-RT-N18.workgroup
Address:  10.6.17.254

未經授權的回答:
名稱:    e.tkec.com.tw
Address:  210.64.24.172

> set type=mx
> e.tkec.com.tw
伺服器:  TONY-RT-N18.workgroup
Address:  10.6.17.254

未經授權的回答:
e.tkec.com.tw   MX preference = 10, mail exchanger = mta1s1.e.flydove.net

(root)  nameserver = e.root-servers.net
(root)  nameserver = k.root-servers.net
(root)  nameserver = a.root-servers.net
(root)  nameserver = m.root-servers.net
(root)  nameserver = h.root-servers.net
(root)  nameserver = j.root-servers.net
(root)  nameserver = d.root-servers.net
(root)  nameserver = f.root-servers.net
(root)  nameserver = c.root-servers.net
(root)  nameserver = g.root-servers.net
(root)  nameserver = l.root-servers.net
(root)  nameserver = b.root-servers.net
(root)  nameserver = i.root-servers.net

3. main.cf
# DO NOT EDIT THIS FILE. EDIT THE MAIN.CF FILE INSTEAD. THE
# TEXT HERE JUST SHOWS DEFAULT SETTINGS BUILT INTO POSTFIX.
#
#add by tonyvan 20140324 start
mynetworks = 127.0.0.1/32,192.168.0.23/32,192.168.0.101/32,192.168.0.100,192.168.0.233/32,192.168.0.247/32,192.168.0.7/32
data_directory = /var/db/postfix
mydomain = xxxx.com.tw
myorigin = $mydomain
mydestination = /usr/local/etc/postfix/local-host-names
#add by tonyvan 20140324 end

2bounce_notice_recipient = postmaster
access_map_defer_code = 450
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 = 10m
address_verify_negative_refresh_time = 10m
address_verify_poll_count = ${stress?1}${stress: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_maps = hash:/usr/local/etc/postfix/aliases
alias_database = $alias_maps
allow_mail_to_commands = alias, forward
allow_mail_to_files = alias, forward
allow_min_user = no
allow_percent_hack = yes
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 = yes
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_size_limit = 51200
bounce_notice_recipient = postmaster
bounce_queue_lifetime = 5s
bounce_service_name = bounce
#bounce_size_limit = 50000
#bounce_size_limit modify by tonyvan 20150812,set to 2MB
bounce_size_limit = 200000 
#message_size_limit add by tonyvan 20150813,set to 20MB
message_size_limit = 20480000
bounce_template_file =
canonical_classes = envelope_sender, envelope_recipient, header_sender, header_recipient
canonical_maps =
cleanup_service_name = cleanup
command_directory = /usr/local/sbin
command_execution_directory =
command_expansion_filter = 1234567890!@%-_=+:,./abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ
command_time_limit = 1000s
config_directory = /usr/local/etc/postfix
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/local/libexec/postfix
daemon_table_open_error_is_fatal = no
daemon_timeout = 18000s
data_directory = /var/db/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_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_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
dnsblog_reply_delay = 0s
dnsblog_service_name = dnsblog
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_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
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_size_limit = 102400
header_checks = regexp:/usr/local/etc/postfix/header_checks
body_checks = regexp:/usr/local/etc/postfix/body_checks
helpful_warnings = yes
home_mailbox =
hopcount_limit = 50
html_directory = /usr/local/share/doc/postfix
ignore_mx_lookup_error = no
import_environment = MAIL_CONFIG MAIL_DEBUG MAIL_LOGTAG TZ XAUTHORITY DISPLAY LANG=C
in_flow_delay = 1s
inet_interfaces = all
inet_protocols = all
initial_destination_concurrency = 5
internal_mail_filter_classes =
ipc_idle = 5s
ipc_timeout = 3600s
ipc_ttl = 1000s
line_length_limit = 2048
lmtp_address_preference = any
lmtp_assume_final = no
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_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_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_resolver_options =
lmtp_enforce_tls = no
lmtp_extra_recipient_limit = $default_extra_recipient_limit
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_ciphers = export
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_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
lmtp_tls_note_starttls_offer = no
lmtp_tls_per_site =
lmtp_tls_policy_maps =
lmtp_tls_protocols = !SSLv2
lmtp_tls_scert_verifydepth = 9
lmtp_tls_secure_cert_match = nexthop
lmtp_tls_security_level =
lmtp_tls_session_cache_database =
lmtp_tls_session_cache_timeout = 3600s
lmtp_tls_verify_cert_match = hostname
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_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
luser_relay =
mail_name = Postfix
mail_owner = postfix
mail_release_date = 20130905
mail_spool_directory = /var/mail
mail_version = 2.10.2
mailbox_command =
mailbox_command_maps =
mailbox_delivery_lock = flock, dotlock
mailbox_size_limit = 0
mailbox_transport =
mailbox_transport_maps =
mailq_path = /usr/local/bin/mailq
manpage_directory = /usr/local/man
maps_rbl_domains =
masquerade_classes = envelope_sender, header_sender, header_recipient
masquerade_domains =
masquerade_exceptions =
master_service_disable =
max_idle = 100s
max_use = 100
maximal_backoff_time = 300h
maximal_queue_lifetime = 1h
recipient_bcc_maps = hash:/usr/local/etc/postfix/recipient_bcc
sender_bcc_maps = hash:/usr/local/etc/postfix/sender_bcc
#add by tonyvan 20140509
smtp_sasl_security_options = noanonymous
#add by tonyvan 20140324
smtpd_sasl_auth_enable = yes
smtpd_client_restrictions = permit_sasl_authenticated check_client_access hash:/usr/local/etc/postfix/client_access permit_mynetworks reject_unknown_client
smtpd_helo_restrictions = permit_mynetworks,reject_invalid_hostname
smtpd_relay_restrictions = permit_mynetworks
smtpd_sender_restrictions = permit_mynetworks,reject_unknown_sender_domain,reject_non_fqdn_sender,permit_sasl_authenticated,reject_unauthenticated_sender_login_mismatch,hash:/usr/local/etc/postfix/sender
#modify by tonyvan 20160406,according http://www.cyberciti.biz/tips/postfix-spam-filtering-with-blacklists-howto.html
smtpd_recipient_restrictions = permit_sasl_authenticated permit_mynetworks permit_auth_destination reject_unknown_client_hostname reject_unauth_destination check_recipient_access hash:/usr/local/etc/postfix/recipients check_policy_service inet:127.0.0.1:10025 reject_rbl_client sbl.spamhaus.org reject_rbl_client cbl.abuseat.org reject_rbl_client dul.dnsbl.sorbs.net
smtpd_sasl_local_domain = $myhostname
smtpd_helo_required = yes
smtpd_error_sleep_time = 60s
smtpd_soft_error_limit = 10
smtpd_hard_error_limit = 20
smtpd_client_connection_count_limit = 10
smtpd_client_connection_rate_limit = 10
 
« 上次編輯: 2017-01-13 11:33 由 tonyvan123 »

tonyvan123

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Re: DNS正解和反解不同E-MAIL被擋的問題
« 回覆 #2 於: 2017-01-13 14:55 »
找到了https://www.flydove.net的首頁
« 上次編輯: 2017-01-13 14:56 由 tonyvan123 »