Thank you for answering, here is the requested information:
According to the instructions in the mailing list welcome message,
send postconf -n output instead of cut-and-paste.
alias_database = hash:/etc/mail/aliases
alias_maps = hash:/etc/mail/aliases
allow_min_user = yes
allow_percent_hack = no
anvil_rate_time_unit = 300
body_checks = hash:/usr/local/etc/postfix/body_checks
bounce_queue_lifetime = 1d
broken_sasl_auth_clients = yes
command_directory = /usr/local/sbin
config_directory = /usr/local/etc/postfix
daemon_directory = /usr/local/libexec/postfix
data_directory = /var/db/postfix
debug_peer_level = 2
default_destination_concurrency_limit = 8
default_process_limit = 200
delay_notice_recipient = postmastercopy_delay
disable_vrfy_command = yes
error_notice_recipient = postmastercopy_error
header_checks = regexp:/usr/local/etc/postfix/header_checks
html_directory = /usr/local/share/doc/postfix
initial_destination_concurrency = 5
mail_owner = postfix
mailbox_size_limit = 1073741824
mailq_path = /usr/local/bin/mailq
manpage_directory = /usr/local/man
max_use = 30
maximal_queue_lifetime = 1d
message_size_limit = 52428800
minimal_backoff_time = 1000s
mydestination = $myhostname, localhost.$mydomain,
mydomain = vol.cz
myhostname = smtp1.vol.cz
mynetworks = $config_directory/our_network_blocks
myorigin = $myhostname
newaliases_path = /usr/local/bin/newaliases
notify_classes = resource,software
queue_directory = /var/spool/postfix
readme_directory = /usr/local/share/doc/postfix
recipient_delimiter = +
sample_directory = /usr/local/etc/postfix
sendmail_path = /usr/local/sbin/sendmail
setgid_group = maildrop
smtp_destination_concurrency_limit = 20
smtp_sasl_type = cyrus
smtp_tls_security_level = may
smtpd_banner = $myhostname ESMTP Mailer
smtpd_client_connection_rate_limit = 30
smtpd_client_message_rate_limit = 100
smtpd_client_recipient_rate_limit = 60
smtpd_client_restrictions = hash:/usr/local/etc/postfix/access_local,
hash:/usr/local/etc/postfix/access, permit
smtpd_delay_reject = yes
smtpd_error_sleep_time = 5
smtpd_hard_error_limit = 20
smtpd_helo_required = yes
smtpd_recipient_limit = 100
smtpd_recipient_restrictions = hash:/usr/local/etc/postfix/access,
permit_mynetworks, permit_sasl_authenticated,
reject_unauth_destination
smtpd_sasl_exceptions_networks = $mynetworks
smtpd_sender_restrictions = reject_unknown_sender_domain,
reject_non_fqdn_sender,
hash:/usr/local/etc/postfix/access, permit
smtpd_soft_error_limit = 10
smtpd_tls_auth_only = yes
smtpd_tls_loglevel = 1
smtpd_tls_received_header = yes
smtpd_tls_session_cache_timeout = 3600s
tls_random_source = dev:/dev/urandom
transport_maps = hash:/usr/local/etc/postfix/transport
unknown_local_recipient_reject_code = 550
According to the instructions in the mailing list welcome message,
show Postfix LOGGING to demonstrate that the mail actually arrived
via the Postfix SMTP SERVER and not via a PHP script that invokes
the Postfix SENDMAIL command.
No such thing is possible in this case, php is not even installed on the
server, and no scripts that would parse client input from the outside are
used. Maillog excerpts:
Nov 20 00:16:10 smtp1 postfix/smtpd[76127]: B054899114:
client=unknown[212.27.195.34]
Nov 20 00:16:11 smtp1 postfix/smtpd[69825]: 14B859916D:
client=unknown[212.27.195.34]
Nov 20 00:16:11 smtp1 postfix/smtpd[70486]: 171A29916E:
client=unknown[212.27.195.34]
Nov 20 00:16:11 smtp1 postfix/smtpd[70251]: 172BE9916F:
client=unknown[212.27.195.34]
Nov 20 00:16:11 smtp1 postfix/smtpd[69709]: 1EA4999170:
client=unknown[212.27.195.34]
Nov 20 00:16:11 smtp1 postfix/smtpd[71764]: 3452299187:
client=unknown[212.27.195.34]
Nov 20 00:16:11 smtp1 postfix/smtpd[76193]: 474C599193:
client=unknown[212.27.195.34]
Nov 20 00:16:11 smtp1 postfix/smtpd[92549]: 7F21B991A2:
client=unknown[212.27.195.34]
Nov 20 00:16:11 smtp1 postfix/smtpd[70588]: 870E2991B7:
client=unknown[212.27.195.34]
Nov 20 00:16:11 smtp1 postfix/smtpd[70708]: 9550999152:
client=unknown[212.27.195.34]
Nov 20 00:16:11 smtp1 postfix/smtpd[72303]: B5A5C99184:
client=unknown[212.27.195.34]
Nov 20 00:16:11 smtp1 postfix/smtpd[72416]: B881599190:
client=unknown[212.27.195.34]
Nov 20 00:16:11 smtp1 postfix/smtpd[72378]: B892899191:
client=unknown[212.27.195.34]
Nov 20 00:16:11 smtp1 postfix/smtpd[72415]: BF6EE9919F:
client=unknown[212.27.195.34]
Nov 20 00:16:12 smtp1 postfix/smtpd[69844]: 058E2991B1:
client=unknown[212.27.195.34]
Nov 20 00:16:12 smtp1 postfix/smtpd[70183]: 061C4991B2:
client=unknown[212.27.195.34]
Nov 20 00:16:12 smtp1 postfix/smtpd[72751]: 24F66991C0:
client=unknown[212.27.195.34]
Nov 20 00:16:12 smtp1 postfix/smtpd[88614]: B2468991E6:
client=unknown[212.27.195.34]
Nov 20 00:16:12 smtp1 postfix/smtpd[69853]: B2FFF991D9:
client=unknown[212.27.195.34]
Number of connection that day:
# zgrep 212.27.195.34 /var/log/maillog.4.gz | wc -l
227123
Example of a mail that made it through:
zgrep B5A5C99184 /var/log/maillog.4.gz
Nov 20 00:16:11 smtp1 postfix/smtpd[72303]: B5A5C99184:
client=unknown[212.27.195.34]
Nov 20 00:16:12 smtp1 postfix/cleanup[94057]: B5A5C99184:
message-id=<7f8eab84.40...@uj8g.org>
Nov 20 00:16:13 smtp1 postfix/qmgr[23822]: B5A5C99184:
from=<ntvuuy...@gmail.com>, size=1003, nrcpt=9 (queue active)
Nov 20 00:17:37 smtp1 postfix/error[94968]: B5A5C99184:
to=<abuszgi...@yahoo.com>, relay=none, delay=87, delays=2/85/0/0.01,
dsn=4.7.0, status=deferred (delivery temporarily suspended: host
e.mx.mail.yahoo.com[67.195.168.230] refused to talk to me: 421 4.7.0
[TS01] Messages from 195.250.128.78 temporarily deferred due to user
complaints - 4.16.55.1; see http://postmaster.yahoo.com/421-ts01.html)
Nov 20 00:17:37 smtp1 postfix/error[94968]: B5A5C99184:
to=<agentil...@yahoo.com>, relay=none, delay=87, delays=2/85/0/0.03,
dsn=4.7.0, status=deferred (delivery temporarily suspended: host
e.mx.mail.yahoo.com[67.195.168.230] refused to talk to me: 421 4.7.0
[TS01] Messages from 195.250.128.78 temporarily deferred due to user
complaints - 4.16.55.1; see http://postmaster.yahoo.com/421-ts01.html)
Nov 20 00:17:37 smtp1 postfix/error[94968]: B5A5C99184:
to=<amr...@yahoo.com>, relay=none, delay=87, delays=2/85/0/0.03,
dsn=4.7.0, status=deferred (delivery temporarily suspended: host
e.mx.mail.yahoo.com[67.195.168.230] refused to talk to me: 421 4.7.0
[TS01] Messages from 195.250.128.78 temporarily deferred due to user
complaints - 4.16.55.1; see http://postmaster.yahoo.com/421-ts01.html)
Nov 20 00:17:37 smtp1 postfix/error[94968]: B5A5C99184:
to=<asusa...@yahoo.com>, relay=none, delay=87, delays=2/85/0/0.05,
dsn=4.7.0, status=deferred (delivery temporarily suspended: host
e.mx.mail.yahoo.com[67.195.168.230] refused to talk to me: 421 4.7.0
[TS01] Messages from 195.250.128.78 temporarily deferred due to user
complaints - 4.16.55.1; see http://postmaster.yahoo.com/421-ts01.html)
Nov 20 00:17:37 smtp1 postfix/error[94968]: B5A5C99184:
to=<basketballrulz_4_...@yahoo.com>, relay=none, delay=87,
delays=2/85/0/0.06, dsn=4.7.0, status=deferred (delivery temporarily
suspended: host e.mx.mail.yahoo.com[67.195.168.230] refused to talk to me:
421 4.7.0 [TS01] Messages from 195.250.128.78 temporarily deferred due to
user complaints - 4.16.55.1; see
http://postmaster.yahoo.com/421-ts01.html)
Nov 20 00:17:37 smtp1 postfix/error[94968]: B5A5C99184:
to=<blackche...@yahoo.com>, relay=none, delay=87, delays=2/85/0/0.07,
dsn=4.7.0, status=deferred (delivery temporarily suspended: host
e.mx.mail.yahoo.com[67.195.168.230] refused to talk to me: 421 4.7.0
[TS01] Messages from 195.250.128.78 temporarily deferred due to user
complaints - 4.16.55.1; see http://postmaster.yahoo.com/421-ts01.html)
Nov 20 00:17:37 smtp1 postfix/error[94968]: B5A5C99184:
to=<bloollus...@yahoo.com>, relay=none, delay=87, delays=2/85/0/0.16,
dsn=4.7.0, status=deferred (delivery temporarily suspended: host
e.mx.mail.yahoo.com[67.195.168.230] refused to talk to me: 421 4.7.0
[TS01] Messages from 195.250.128.78 temporarily deferred due to user
complaints - 4.16.55.1; see http://postmaster.yahoo.com/421-ts01.html)
Nov 20 00:17:37 smtp1 postfix/error[94968]: B5A5C99184:
to=<brokenhy...@yahoo.com>, relay=none, delay=87, delays=2/85/0/0.16,
dsn=4.7.0, status=deferred (delivery temporarily suspended: host
e.mx.mail.yahoo.com[67.195.168.230] refused to talk to me: 421 4.7.0
[TS01] Messages from 195.250.128.78 temporarily deferred due to user
complaints - 4.16.55.1; see http://postmaster.yahoo.com/421-ts01.html)
Nov 20 00:17:37 smtp1 postfix/error[94968]: B5A5C99184:
to=<cf...@yahoo.com>, relay=none, delay=87, delays=2/85/0/0.17, dsn=4.7.0,
status=deferred (delivery temporarily suspended: host
e.mx.mail.yahoo.com[67.195.168.230] refused to talk to me: 421 4.7.0
[TS01] Messages from 195.250.128.78 temporarily deferred due to user
complaints - 4.16.55.1; see http://postmaster.yahoo.com/421-ts01.html)
Nov 20 00:36:47 smtp1 postfix/qmgr[23822]: B5A5C99184:
from=<ntvuuy...@gmail.com>, size=1003, nrcpt=9 (queue active)
Nov 20 00:52:03 smtp1 postfix/error[15014]: B5A5C99184:
to=<abuszgi...@yahoo.com>, relay=none, delay=2153, delays=1236/917/0/0.03,
dsn=4.7.0, status=deferred (delivery temporarily suspended: host
c.mx.mail.yahoo.com[209.191.88.254] refused to talk to me: 421 4.7.0
[TS01] Messages from 195.250.128.78 temporarily deferred due to user
complaints - 4.16.55.1; see http://postmaster.yahoo.com/421-ts01.html)
Nov 20 00:52:04 smtp1 postfix/error[15014]: B5A5C99184:
to=<agentil...@yahoo.com>, relay=none, delay=2153, delays=1236/917/0/0.19,
dsn=4.7.0, status=deferred (delivery temporarily suspended: host
c.mx.mail.yahoo.com[209.191.88.254] refused to talk to me: 421 4.7.0
[TS01] Messages from 195.250.128.78 temporarily deferred due to user
complaints - 4.16.55.1; see http://postmaster.yahoo.com/421-ts01.html)
Nov 20 00:52:04 smtp1 postfix/error[15014]: B5A5C99184:
to=<amr...@yahoo.com>, relay=none, delay=2153, delays=1236/917/0/0.2,
dsn=4.7.0, status=deferred (delivery temporarily suspended: host
c.mx.mail.yahoo.com[209.191.88.254] refused to talk to me: 421 4.7.0
[TS01] Messages from 195.250.128.78 temporarily deferred due to user
complaints - 4.16.55.1; see http://postmaster.yahoo.com/421-ts01.html)
Nov 20 00:52:04 smtp1 postfix/error[15014]: B5A5C99184:
to=<asusa...@yahoo.com>, relay=none, delay=2153, delays=1236/917/0/0.24,
dsn=4.7.0, status=deferred (delivery temporarily suspended: host
c.mx.mail.yahoo.com[209.191.88.254] refused to talk to me: 421 4.7.0
[TS01] Messages from 195.250.128.78 temporarily deferred due to user
complaints - 4.16.55.1; see http://postmaster.yahoo.com/421-ts01.html)
Nov 20 00:52:04 smtp1 postfix/error[15014]: B5A5C99184:
to=<basketballrulz_4_...@yahoo.com>, relay=none, delay=2153,
delays=1236/917/0/0.32, dsn=4.7.0, status=deferred (delivery temporarily
suspended: host c.mx.mail.yahoo.com[209.191.88.254] refused to talk to me:
421 4.7.0 [TS01] Messages from 195.250.128.78 temporarily deferred due to
user complaints - 4.16.55.1; see
http://postmaster.yahoo.com/421-ts01.html)
Nov 20 00:52:04 smtp1 postfix/error[15014]: B5A5C99184:
to=<blackche...@yahoo.com>, relay=none, delay=2153,
delays=1236/917/0/0.38, dsn=4.7.0, status=deferred (delivery temporarily
suspended: host c.mx.mail.yahoo.com[209.191.88.254] refused to talk to me:
421 4.7.0 [TS01] Messages from 195.250.128.78 temporarily deferred due to
user complaints - 4.16.55.1; see
http://postmaster.yahoo.com/421-ts01.html)
Nov 20 00:52:04 smtp1 postfix/error[15014]: B5A5C99184:
to=<bloollus...@yahoo.com>, relay=none, delay=2153,
delays=1236/917/0/0.43, dsn=4.7.0, status=deferred (delivery temporarily
suspended: host c.mx.mail.yahoo.com[209.191.88.254] refused to talk to me:
421 4.7.0 [TS01] Messages from 195.250.128.78 temporarily deferred due to
user complaints - 4.16.55.1; see
http://postmaster.yahoo.com/421-ts01.html)
Nov 20 00:52:04 smtp1 postfix/error[15014]: B5A5C99184:
to=<brokenhy...@yahoo.com>, relay=none, delay=2153,
delays=1236/917/0/0.44, dsn=4.7.0, status=deferred (delivery temporarily
suspended: host c.mx.mail.yahoo.com[209.191.88.254] refused to talk to me:
421 4.7.0 [TS01] Messages from 195.250.128.78 temporarily deferred due to
user complaints - 4.16.55.1; see
http://postmaster.yahoo.com/421-ts01.html)
Nov 20 00:52:04 smtp1 postfix/error[15014]: B5A5C99184:
to=<cf...@yahoo.com>, relay=none, delay=2153, delays=1236/917/0/0.46,
dsn=4.7.0, status=deferred (delivery temporarily suspended: host
c.mx.mail.yahoo.com[209.191.88.254] refused to talk to me: 421 4.7.0
[TS01] Messages from 195.250.128.78 temporarily deferred due to user
complaints - 4.16.55.1; see http://postmaster.yahoo.com/421-ts01.html)
Nov 20 02:03:17 smtp1 postfix/qmgr[23822]: B5A5C99184:
from=<ntvuuy...@gmail.com>, size=1003, nrcpt=9 (queue active)
Nov 20 02:18:29 smtp1 postfix/error[65667]: B5A5C99184:
to=<abuszgi...@yahoo.com>, relay=none, delay=7338, delays=6427/912/0/0.02,
dsn=4.7.0, status=deferred (delivery temporarily suspended: host
g.mx.mail.yahoo.com[98.137.54.238] refused to talk to me: 421 4.7.0 [TS01]
Messages from 195.250.128.78 temporarily deferred due to user complaints -
4.16.55.1; see http://postmaster.yahoo.com/421-ts01.html)
Nov 20 02:18:29 smtp1 postfix/error[65667]: B5A5C99184:
to=<agentil...@yahoo.com>, relay=none, delay=7338, delays=6427/912/0/0.05,
dsn=4.7.0, status=deferred (delivery temporarily suspended: host
g.mx.mail.yahoo.com[98.137.54.238] refused to talk to me: 421 4.7.0 [TS01]
Messages from 195.250.128.78 temporarily deferred due to user complaints -
4.16.55.1; see http://postmaster.yahoo.com/421-ts01.html)
Nov 20 02:18:29 smtp1 postfix/error[65667]: B5A5C99184:
to=<amr...@yahoo.com>, relay=none, delay=7338, delays=6427/912/0/0.08,
dsn=4.7.0, status=deferred (delivery temporarily suspended: host
g.mx.mail.yahoo.com[98.137.54.238] refused to talk to me: 421 4.7.0 [TS01]
Messages from 195.250.128.78 temporarily deferred due to user complaints -
4.16.55.1; see http://postmaster.yahoo.com/421-ts01.html)
Nov 20 02:18:29 smtp1 postfix/error[65667]: B5A5C99184:
to=<asusa...@yahoo.com>, relay=none, delay=7338, delays=6427/912/0/0.11,
dsn=4.7.0, status=deferred (delivery temporarily suspended: host
g.mx.mail.yahoo.com[98.137.54.238] refused to talk to me: 421 4.7.0 [TS01]
Messages from 195.250.128.78 temporarily deferred due to user complaints -
4.16.55.1; see http://postmaster.yahoo.com/421-ts01.html)
Nov 20 02:18:29 smtp1 postfix/error[65667]: B5A5C99184:
to=<basketballrulz_4_...@yahoo.com>, relay=none, delay=7338,
delays=6427/912/0/0.13, dsn=4.7.0, status=deferred (delivery temporarily
suspended: host g.mx.mail.yahoo.com[98.137.54.238] refused to talk to me:
421 4.7.0 [TS01] Messages from 195.250.128.78 temporarily deferred due to
user complaints - 4.16.55.1; see
http://postmaster.yahoo.com/421-ts01.html)
Nov 20 02:18:29 smtp1 postfix/error[65667]: B5A5C99184:
to=<blackche...@yahoo.com>, relay=none, delay=7338,
delays=6427/912/0/0.15, dsn=4.7.0, status=deferred (delivery temporarily
suspended: host g.mx.mail.yahoo.com[98.137.54.238] refused to talk to me:
421 4.7.0 [TS01] Messages from 195.250.128.78 temporarily deferred due to
user complaints - 4.16.55.1; see
http://postmaster.yahoo.com/421-ts01.html)
Nov 20 02:18:29 smtp1 postfix/error[65667]: B5A5C99184:
to=<bloollus...@yahoo.com>, relay=none, delay=7338,
delays=6427/912/0/0.18, dsn=4.7.0, status=deferred (delivery temporarily
suspended: host g.mx.mail.yahoo.com[98.137.54.238] refused to talk to me:
421 4.7.0 [TS01] Messages from 195.250.128.78 temporarily deferred due to
user complaints - 4.16.55.1; see
http://postmaster.yahoo.com/421-ts01.html)
Nov 20 02:18:29 smtp1 postfix/error[65667]: B5A5C99184:
to=<brokenhy...@yahoo.com>, relay=none, delay=7338,
delays=6427/912/0/0.21, dsn=4.7.0, status=deferred (delivery temporarily
suspended: host g.mx.mail.yahoo.com[98.137.54.238] refused to talk to me:
421 4.7.0 [TS01] Messages from 195.250.128.78 temporarily deferred due to
user complaints - 4.16.55.1; see
http://postmaster.yahoo.com/421-ts01.html)
Nov 20 02:18:29 smtp1 postfix/error[65667]: B5A5C99184:
to=<cf...@yahoo.com>, relay=none, delay=7338, delays=6427/912/0/0.23,
dsn=4.7.0, status=deferred (delivery temporarily suspended: host
g.mx.mail.yahoo.com[98.137.54.238] refused to talk to me: 421 4.7.0 [TS01]
Messages from 195.250.128.78 temporarily deferred due to user complaints -
4.16.55.1; see http://postmaster.yahoo.com/421-ts01.html)
Nov 20 07:14:09 smtp1 postfix/qmgr[23822]: B5A5C99184:
from=<ntvuuy...@gmail.com>, size=1003, nrcpt=9 (queue active)
Nov 20 07:47:44 smtp1 postfix/error[75633]: B5A5C99184:
to=<abuszgi...@yahoo.com>, relay=none, delay=27094,
delays=25078/2015/0/0.11, dsn=4.7.0, status=deferred (delivery temporarily
suspended: host a.mx.mail.yahoo.com[67.195.168.31] refused to talk to me:
421 4.7.0 [TS01] Messages from 195.250.128.78 temporarily deferred due to
user complaints - 4.16.55.1; see
http://postmaster.yahoo.com/421-ts01.html)
Nov 20 07:47:44 smtp1 postfix/error[75633]: B5A5C99184:
to=<agentil...@yahoo.com>, relay=none, delay=27094,
delays=25078/2015/0/0.14, dsn=4.7.0, status=deferred (delivery temporarily
suspended: host a.mx.mail.yahoo.com[67.195.168.31] refused to talk to me:
421 4.7.0 [TS01] Messages from 195.250.128.78 temporarily deferred due to
user complaints - 4.16.55.1; see
http://postmaster.yahoo.com/421-ts01.html)
Nov 20 07:47:44 smtp1 postfix/error[75633]: B5A5C99184:
to=<amr...@yahoo.com>, relay=none, delay=27094, delays=25078/2015/0/0.23,
dsn=4.7.0, status=deferred (delivery temporarily suspended: host
a.mx.mail.yahoo.com[67.195.168.31] refused to talk to me: 421 4.7.0 [TS01]
Messages from 195.250.128.78 temporarily deferred due to user complaints -
4.16.55.1; see http://postmaster.yahoo.com/421-ts01.html)
Nov 20 07:47:45 smtp1 postfix/error[75633]: B5A5C99184:
to=<asusa...@yahoo.com>, relay=none, delay=27094,
delays=25078/2015/0/0.43, dsn=4.7.0, status=deferred (delivery temporarily
suspended: host a.mx.mail.yahoo.com[67.195.168.31] refused to talk to me:
421 4.7.0 [TS01] Messages from 195.250.128.78 temporarily deferred due to
user complaints - 4.16.55.1; see
http://postmaster.yahoo.com/421-ts01.html)
Nov 20 07:47:45 smtp1 postfix/error[75633]: B5A5C99184:
to=<basketballrulz_4_...@yahoo.com>, relay=none, delay=27094,
delays=25078/2015/0/0.6, dsn=4.7.0, status=deferred (delivery temporarily
suspended: host a.mx.mail.yahoo.com[67.195.168.31] refused to talk to me:
421 4.7.0 [TS01] Messages from 195.250.128.78 temporarily deferred due to
user complaints - 4.16.55.1; see
http://postmaster.yahoo.com/421-ts01.html)
Nov 20 07:47:45 smtp1 postfix/error[75633]: B5A5C99184:
to=<blackche...@yahoo.com>, relay=none, delay=27094,
delays=25078/2015/0/0.7, dsn=4.7.0, status=deferred (delivery temporarily
suspended: host a.mx.mail.yahoo.com[67.195.168.31] refused to talk to me:
421 4.7.0 [TS01] Messages from 195.250.128.78 temporarily deferred due to
user complaints - 4.16.55.1; see
http://postmaster.yahoo.com/421-ts01.html)
Nov 20 07:47:45 smtp1 postfix/error[75633]: B5A5C99184:
to=<bloollus...@yahoo.com>, relay=none, delay=27094,
delays=25078/2015/0/0.85, dsn=4.7.0, status=deferred (delivery temporarily
suspended: host a.mx.mail.yahoo.com[67.195.168.31] refused to talk to me:
421 4.7.0 [TS01] Messages from 195.250.128.78 temporarily deferred due to
user complaints - 4.16.55.1; see
http://postmaster.yahoo.com/421-ts01.html)
Nov 20 07:47:45 smtp1 postfix/error[75633]: B5A5C99184:
to=<brokenhy...@yahoo.com>, relay=none, delay=27095,
delays=25078/2015/0/0.99, dsn=4.7.0, status=deferred (delivery temporarily
suspended: host a.mx.mail.yahoo.com[67.195.168.31] refused to talk to me:
421 4.7.0 [TS01] Messages from 195.250.128.78 temporarily deferred due to
user complaints - 4.16.55.1; see
http://postmaster.yahoo.com/421-ts01.html)
Nov 20 07:47:45 smtp1 postfix/error[75633]: B5A5C99184:
to=<cf...@yahoo.com>, relay=none, delay=27095, delays=25078/2015/0/1,
dsn=4.7.0, status=deferred (delivery temporarily suspended: host
a.mx.mail.yahoo.com[67.195.168.31] refused to talk to me: 421 4.7.0 [TS01]
Messages from 195.250.128.78 temporarily deferred due to user complaints -
4.16.55.1; see http://postmaster.yahoo.com/421-ts01.html)
Nov 20 11:36:02 smtp1 postfix/qmgr[23822]: B5A5C99184:
from=<ntvuuy...@gmail.com>, size=1003, nrcpt=9 (queue active)
Nov 20 11:36:12 smtp1 postfix/postsuper[22492]: B5A5C99184: removed
Thank you once again.
Best Regards
Daniel Ryslink
On Wed, 25 Nov 2009, Wietse Venema wrote:
Daniel Ryslink:
Hello,
I am trying to set rate limits on our smtp relays to prevent abusive
(compromised) user hosts from flooding the service with fast, intensive mail
floods.
I have used the following directives (I can post whole main.cf, but I don't
think it's necessary):
smtpd_recipient_limit = 100
smtpd_error_sleep_time = 5
smtpd_client_recipient_rate_limit = 60
smtpd_client_connection_rate_limit = 30
smtpd_client_message_rate_limit = 100
smtpd_soft_error_limit = 10
smtpd_hard_error_limit = 20
anvil_rate_time_unit = 300
According to the instructions in the mailing list welcome message,
send postconf -n output instead of cut-and-paste.
However, these limits do not seem to apply, I have recently experienced a
massive flood from a single user that managed to send hundreds of thousands of
mails overnight.
According to the instructions in the mailing list welcome message,
show Postfix LOGGING to demonstrate that the mail actually arrived
via the Postfix SMTP SERVER and not via a PHP script that invokes
the Postfix SENDMAIL command.
Wietse
I thought that especially limiting the number of recipients to 60 / 5 minutes
will be quite effective against spam floods, but the anvil is probably working
in a different way than I thought, please advice.
Thank you kindly in advance.
Best regards
Daniel Ryslink
