On 2020/08/31 22:39, Wietse Venema wrote:
kawakami:
And this problem occurs NOT always, only in following situatision,
2, A message was sent on IPv4, but resuted 451 error.
3, A message was sent on IPv6, but resuted 451 error.
After a 4xx error, the SAME Postfix SMTP client process may
IMMEDIATELY try to make the SAME delivery to a different MX host.
If this is new, please read the SMTP protocol spec, RFC 5321.
Wietse
I understood that specification.
But I think that spec doesn't explain the reason why
postfix "max_use=1" doesn't work on the situation.
To make this situation clear, I explain that again and
show settings as you request.
2, A message was sent on IPv4, but resuted 451 error.
3, A message was sent on IPv6, but resuted 451 error.
Setting "max_use=1" on /etc/master.cf, but the same process ID was
assigned to different connections(postfix/smtpd process) like above.
Senders and Recipients are diffrent between 2 and 3.
On that time, following LOGs apperred.
Aug 3 15:10:11 dummy postfix/smtpd[5254]: connect from
example.com[X.X.X.X]:56925
Aug 3 15:10:11 dummy postfix/smtpd[5254]: NOQUEUE: reject: MAIL from
example.com[X.X.X.X]:56925: 451 4.7.1 : Sender address
rejected: denied temporary; from= proto=ESMTP
helo=
Aug 3 15:10:11 dummy postfix/smtpd[5254]: disconnect from
example.com[X.X.X.X]:56925
Aug 3 15:10:11 dummy postfix/smtpd[5254]: connect from
example.net[aa:bb:ccc::e]:15480
Aug 3 15:10:21 dummy postfix/smtpd[5254]: NOQUEUE: reject: MAIL from
example.net[aa:bb:ccc::e]:15480: 451 4.7.1 : Sender
address rejected: denied temporary; from= proto=ESMTP
helo=
Aug 3 15:10:26 dummy postfix/smtpd[5254]: lost connection after MAIL
from example.net[aa:bb:ccc::e]:15480
Aug 3 15:10:26 dummy postfix/smtpd[5254]: disconnect from
example.net[aa:bb:ccc::e]:15480
Postfix setting are here;
# posgconf -n
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
allow_min_user = yes
bounce_queue_lifetime = 3d
bounce_size_limit = 5
bounce_template_file = /etc/postfix/bounce.cf
broken_sasl_auth_clients = yes
command_directory = /usr/sbin
config_directory = /etc/postfix
daemon_directory = /usr/libexec/postfix
data_directory = /var/lib/postfix
debug_peer_level = 2
debugger_command = PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin ddd
$daemon_directory/$process_name $process_id & sleep 5
default_destination_concurrency_limit = 40
default_destination_recipient_limit = 200
default_transport = smtp:[192.168.x.y] ★
disable_vrfy_command = yes
header_size_limit = 102400
html_directory = no
inet_interfaces = all
inet_protocols = all
initial_destination_concurrency = 40
mail_owner = postfix
mailbox_size_limit = 0
mailq_path = /usr/bin/mailq.postfix
manpage_directory = /usr/share/man
maximal_queue_lifetime = 3d
message_size_limit = 20971520
mydestination = $myhostname, dummy.example.jp
mydomain = example.jp
myhostname = dummy.example.jp
myorigin = example.jp
newaliases_path = /usr/bin/newaliases.postfix
queue_directory = /var/spool/postfix
readme_directory = /usr/share/doc/postfix-2.10.1/README_FILES
relay_domains = hash:/etc/postfix/relaydomain
relay_recipient_maps = ldap:/etc/postfix/ldap-basic.cf
sample_directory = /usr/share/doc/postfix-2.10.1/samples
sendmail_path = /usr/sbin/sendmail.postfix
setgid_group = postdrop
smtp_data_xfer_timeout = 300s
smtpd_banner = $myhostname ESMTP
smtpd_client_port_logging = yes
smtpd_data_restrictions = check_policy_service inet:127.0.0.1:2525 permit
smtpd_delay_reject = no
smtpd_milters = unix:/var/run/milter-manager/milter-manager.sock
smtpd_recipient_restrictions = check_policy_service inet:127.0.0.1:2525
reject_unauth_destination
smtpd_sender_restrictions = check_policy_service inet:127.0.0.1:2525
reject_non_fqdn_sender permit
smtpd_timeout = 60s
transport_maps = hash:/etc/postfix/transport
unknown_local_recipient_reject_code = 550
virtual_alias_maps = hash:/etc/postfix/virtual
# postconf -Mf
smtp inet n - n - 300 smtpd -o max_use=1
pickup unix n - n 60 1 pickup
cleanupunix n - n - 0 cleanup
qmgr unix n - n 300 1 qmgr
tlsmgr unix - - n 1000? 1 tlsmgr
rewriteunix - - n - - trivial-rewrite
bounce unix - - n - 0 bounce
defer unix - - n - 0 bounce
trace unix - - n - 0 bounce
verify unix - - n - 1 verify
flush unix n - n 1000? 0 flush
proxymap unix - - n - - proxymap
proxywrite unix - - n - 1 proxymap
smtp unix - - n - -
smtp.(masked program)
relay unix - - n - - smtp
