Что делать если очередь забивается спамерами?

Question

[fischerufa]

Добрый день, проблема в следующем, очередь в postfix забивается спамерами

Типа такого

1C4C721A0A57 4096 Thu Jan 11 08:41:49 [e-mail]
(host mx-tw.mail.gm0.yahoodns.net[27.123.206.55] said: 421 4.7.0 [TSS04] Messages from 92.50.139.110 temporarily deferred due to user complaints - 4.16.55.1; see https://help.yahoo.com/kb/postmaster/SLN3434.html (in reply to MAIL FROM command))
[e-mail]
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[e-mail]

За час таких писем набегает около 3 тысяч, как можно с этим бороться?

main.cf

mydomain = example.com
smtpd_banner = mail.example.com
biff = no
maximal_queue_lifetime = 1m
append_dot_mydomain = no
readme_directory = no

smtp_header_checks = pcre:/etc/postfix/smtp_header_checks
header_checks = pcre:/etc/postfix/header_checks

smtpd_tls_cert_file=/etc/ssl/certs/example.crt
smtpd_tls_key_file=/etc/ssl/private/example.key
smtpd_tls_CAfile = /etc/ssl/certs/example.crt
smtpd_use_tls = yes
smtp_use_tls = yes
smtpd_tls_auth_only = yes
smtpd_tls_loglevel = 1
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
smtp_tls_note_starttls_offer = yes
#smtpd_sasl_auth_enable = yes
#smtpd_sasl_type = dovecot
#smtpd_sasl_path = private/auth

disable_vrfy_command = yes
strict_rfc821_envelopes = yes
smtpd_tls_security_level = may
smtp_tls_security_level = may
smtp_tls_ciphers = export
smtp_tls_protocols = !SSLv2, !SSLv3
smtpd_tls_received_header = yes
smtpd_tls_loglevel = 1
tls_random_source = dev:/dev/urandom

smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination
myhostname = example.com
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = $mydomain
mydestination = $myhostname, localhost.$mydomain, localhost
mynetworks = 192.168.0.0/16, 127.0.0.0/8
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = $myhostname
inet_protocols = ipv4
home_mailbox = Maildir/
mailbox_command =
smtp_tls_loglevel = 1
smtpd_delay_reject = yes
smtpd_helo_required = yes
policyd-spf_time_limit = 3600
queue_directory = /var/spool/postfix
command_directory = /usr/sbin
data_directory = /var/lib/postfix
smtpd_reject_unlisted_recipient = yes
smtpd_reject_unlisted_sender = yes

smtpd_client_restrictions = permit_mynetworks,
reject_non_fqdn_hostname,
reject_non_fqdn_sender,
reject_rbl_client cbl.abuseat.org,
reject_rbl_client pbl.spamhaus.org,
reject_rbl_client combined.njabl.org,
reject_rbl_client bl.spamcop.net,
reject_rbl_client dialups.mail-abuse.org

smtpd_recipient_restrictions =
reject_unknown_recipient_domain,
permit_mynetworks,
reject_non_fqdn_recipient,
reject_unauth_destination,
reject_unverified_recipient,
check_policy_service unix:private/policyd-spf
permit

milter_default_action = accept
milter_protocol = 2
smtpd_milters = inet:localhost:8891
non_smtpd_milters = inet:localhost:8891

Answer 1

[Владимир Дубровин]

У вас сейчас открытый релей без авторизации:

C:\Downloads>telnet 92.50.139.110 25
Trying 92.50.139.110...
Connected to 92.50.139.110.
Escape character is '^]'.
220 mail.medialabufa.ru
ehlo me
250-medialabufa.ru
250-PIPELINING
250-SIZE 10240000
250-ETRN
250-STARTTLS
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
mail from: <[e-mail]>
250 2.1.0 Ok
rcpt to: <[e-mail]>
250 2.1.5 Ok

проверьте что у вас в master.cf

Comments

[fischerufa]

А разве строчка mynetworks = 192.168.0.0/16, 127.0.0.0/8 не должна блокировать другие подкл?

master.cf

#
# Postfix master process configuration file. For details on the format
# of the file, see the master(5) manual page (command: "man 5 master" or
# on-line: www.postfix.org/master.5.html).
#
# Do not forget to execute "postfix reload" after editing this file.
#
# ==========================================================================
# service type private unpriv chroot wakeup maxproc command + args
# (yes) (yes) (yes) (never) (100)
# ==========================================================================
#smtp inet n - - - - smtpd
smtp inet n - - - 1 postscreen
smtpd pass - - - - - smtpd
#dnsblog unix - - - - 0 dnsblog
tlsproxy unix - - - - 0 tlsproxy
submission inet n - - - - smtpd
# -o syslog_name=postfix/submission
-o smtpd_tls_security_level=may
-o smtpd_sasl_auth_enable=yes
-o smtpd_sasl_security_options=noanonymous
-o smtpd_sasl_path=private/auth
-o smtpd_client_restrictions=permit_sasl_authenticated,reject
-o smtpd_sender_restrictions=reject_sender_login_mismatch
-o smtpd_recipient_restrictions=reject_unverified_recipient,reject_unknown_recipient_domain,reject_non_fqdn_recipient,permit_sasl_authenticated,reject
-o smtpd_sasl_type=dovecot
# -o smtpd_reject_unlisted_recipient=no
# -o smtpd_client_restrictions=$mua_client_restrictions
# -o smtpd_helo_restrictions=$mua_helo_restrictions
# -o smtpd_sender_restrictions=$mua_sender_restrictions
# -o smtpd_recipient_restrictions=
# -o smtpd_relay_restrictions=permit_sasl_authenticated,reject
# -o milter_macro_daemon_name=ORIGINATING
smtps inet n - - - - smtpd
# -o syslog_name=postfix/smtps
# -o smtpd_tls_wrappermode=yes
-o smtpd_sasl_auth_enable=yes
# -o smtpd_reject_unlisted_recipient=no
# -o smtpd_client_restrictions=$mua_client_restrictions
# -o smtpd_helo_restrictions=$mua_helo_restrictions
# -o smtpd_sender_restrictions=$mua_sender_restrictions
# -o smtpd_recipient_restrictions=
# -o smtpd_relay_restrictions=permit_sasl_authenticated,reject
# -o milter_macro_daemon_name=ORIGINATING
#628 inet n - - - - qmqpd
pickup unix n - - 60 1 pickup
cleanup unix n - - - 0 cleanup
qmgr unix n - n 300 1 qmgr
#qmgr unix n - n 300 1 oqmgr
tlsmgr unix - - - 1000? 1 tlsmgr
rewrite unix - - - - - trivial-rewrite
bounce unix - - - - 0 bounce
defer unix - - - - 0 bounce
trace unix - - - - 0 bounce
verify unix - - - - 1 verify
flush unix n - - 1000? 0 flush
proxymap unix - - n - - proxymap
proxywrite unix - - n - 1 proxymap
smtp unix - - - - - smtp
relay unix - - - - - smtp
# -o smtp_helo_timeout=5 -o smtp_connect_timeout=5
showq unix n - - - - showq
error unix - - - - - error
retry unix - - - - - error
discard unix - - - - - discard
local unix - n n - - local
virtual unix - n n - - virtual
lmtp unix - - - - - lmtp
anvil unix - - - - 1 anvil
scache unix - - - - 1 scache
#
# ====================================================================
# Interfaces to non-Postfix software. Be sure to examine the manual
# pages of the non-Postfix software to find out what options it wants.
#
# Many of the following services use the Postfix pipe(8) delivery
# agent. See the pipe(8) man page for information about ${recipient}
# and other message envelope options.
# ====================================================================
#
# maildrop. See the Postfix MAILDROP_README file for details.
# Also specify in main.cf: maildrop_destination_recipient_limit=1
#
maildrop unix - n n - - pipe
flags=DRhu user=vmail argv=/usr/bin/maildrop -d ${recipient}
#
# ====================================================================
#
# Recent Cyrus versions can use the existing "lmtp" master.cf entry.
#
# Specify in cyrus.conf:
# lmtp cmd="lmtpd -a" listen="localhost:lmtp" proto=tcp4
#
# Specify in main.cf one or more of the following:
# mailbox_transport = lmtp:inet:localhost
# virtual_transport = lmtp:inet:localhost
#
# ====================================================================
#
# Cyrus 2.1.5 (Amos Gouaux)
# Also specify in main.cf: cyrus_destination_recipient_limit=1
#
#cyrus unix - n n - - pipe
# user=cyrus argv=/cyrus/bin/deliver -e -r ${sender} -m ${extension} ${user}
#
# ====================================================================
# Old example of delivery via Cyrus.
#
#old-cyrus unix - n n - - pipe
# flags=R user=cyrus argv=/cyrus/bin/deliver -e -m ${extension} ${user}
#
# ====================================================================
#
# See the Postfix UUCP_README file for configuration details.
#
uucp unix - n n - - pipe
flags=Fqhu user=uucp argv=uux -r -n -z -a$sender - $nexthop!rmail ($recipient)
#
# Other external delivery methods.
#
ifmail unix - n n - - pipe
flags=F user=ftn argv=/usr/lib/ifmail/ifmail -r $nexthop ($recipient)
bsmtp unix - n n - - pipe
flags=Fq. user=bsmtp argv=/usr/lib/bsmtp/bsmtp -t$nexthop -f$sender $recipient
scalemail-backend unix - n n - 2 pipe
flags=R user=scalemail argv=/usr/lib/scalemail/bin/scalemail-store ${nexthop} ${user} ${extension}
mailman unix - n n - - pipe
flags=FR user=list argv=/usr/lib/mailman/bin/postfix-to-mailman.py
${nexthop} ${user}

policyd-spf unix - n n - 0 spawn
user=nobody argv=/usr/bin/python /usr/bin/policyd-spf

[Владимир Дубровин]

fischerufa, скорее всего проблема из-за запятых в mynetworks, их быть не должно.
P.S.
нет, это не влияет. Убедитесь что вы перезапустили постфикс с этим конфигом и он стартанул успешно.
Если у вас где-то есть проброс портов, убедитесь что он сохраняет IP адрес клиента, а не перезаписывает его локальным.

[fischerufa]

Владимир Дубровин, Запятую убрал, оставил 192.168.0.0/16 проблема всё та же, проброс портов есть но IP не перезаписываются, фиг знает в чем проблема, видимо надо как то жестче прописывать правила в main.cf