Hello postfix users
First Ill say that its about 10 days I read Mailing list history, and I
that I Google around in order to understand Bounce Handling in postfix. (Im
a former Exim user)
Ive found with Google several sites explaining how to set up bounce
handling, but up to now all methods tested do not work for me
Let me explain first what we want to do and what is done up to now :
- We have approx 150 customers that wish to do marketing email with their
customers, and we have had these customers knowing former spam listing,
because they / we did not cope feedback loops, list retrieval and all the
quality service recommendations. These customers are mostly Automotive
software users that use our integrated mailing service in the software,
using simple outlook mailing dlls (software is made under windev, and uses
all Windows dlls).
- We want to offer our customers a service that will allow them by using
their software, to mail their customers, through a mailing platform,
independent of their outlook / email software and that will cope : Mailing
unsubscription, feedback loops with webmail / ISP, bounce handling to bring
their mailing lists to quality
.
What we have setup :
- Postfix mailing servers (5), (servers A E) with authorized (login /
password) account set in our software, and ID control of our users sending
their marketing mail. These servers are only purposed to mail sending, all
web and bounce treatment is done on 2 other servers (F/G) loadbalanced, that
cope bounces (return path sends to these 2 servers domain name, it is set to
send bounce emails to @F.net). These five servers work to our needs with no
problem.
- Mailing List unsubscription, feedback loops, online data handling, mysql
mailing statistics, on servers F/G
- Bounce Handling php script, checking bounces and coping in databases all
post-bounce treatements on servers F / G
- Bounce Handling administrative script allowing us to learn new Bounce
codes not already treated automatically by system on servers F/G.
What we havent managed to setup.
- On servers F/G, postfix is not able to send bounced email received to php
script.
- Postfix answers to all bounces received on these servers :
bounce.kiuk0xhqtmkr-jf3t8kmh-mfs8q6qvq5s...@bounces.f.net: unknown user
bounce.kiuk0xhqtmkr-jf3t8kmh-mfs8q6qvq5s5cq
I know I havent setup things correctly on these servers, and I would
appreciate your help to identify my errors.
Here is master.cf which I think meets most websites indications in term of
bounce handling to php scripts :
#
# Postfix master process configuration file. For details on the format
# of the file, see the master(5) manual page (command: "man 5 master").
#
# ==========================================================================
# service type private unpriv chroot wakeup maxproc command + args
# (yes) (yes) (yes) (never) (100)
# ==========================================================================
smtp inet n - - - - smtpd
#submission inet n - - - - smtpd
# -o smtpd_enforce_tls=yes
# -o smtpd_sasl_auth_enable=yes
# -o smtpd_client_restrictions=permit_sasl_authenticated,reject
#smtps inet n - - - - smtpd
# -o smtpd_tls_wrappermode=yes
# -o smtpd_sasl_auth_enable=yes
# -o smtpd_client_restrictions=permit_sasl_authenticated,reject
#628 inet n - - - - qmqpd
pickup fifo n - - 60 1 pickup
cleanup unix n - - - 0 cleanup
qmgr fifo n - n 300 1 qmgr
#qmgr fifo 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
smtp unix - - - - - smtp
# When relaying mail as backup MX, disable fallback_relay to avoid MX loops
relay unix - - - - - smtp
-o smtp_fallback_relay=
# -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 ${recipient}
#
# See the Postfix UUCP_README file for configuration details.
#
uucp unix - n n - - pipe
flags=Fqhu user=uucp argv=uux -r -n -z -a$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}
bounceh unix - n n - - pipe
user=mailadmin argv=/srv/F/www/F.net/htdocs/get_bounces.php $sender
$recipient
Here is main.cf, as installed by default by host :
unknown_local_recipient_reject_code = 550
unknown_address_reject_code = 450
unknown_client_reject_code = 450
unknown_hostname_reject_code = 450
smtp-filter_destination_concurrency_limit = 2
lmtp-filter_destination_concurrency_limit = 2
inet_interfaces = all
mynetworks_style = host
mynetworks = 127.0.0.0/8
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
mydomain = bounces.F.net
myorigin = $mydomain
myhostname = $mydomain
mydestination = $mydomain, mail.$domain, localhost, localhost.$mydomain
masquerade_exceptions = root
masquerade_domains = $mydomain
mail_spool_directory = /var/spool/mail
recipient_delimiter = +
local_destination_concurrency_limit = 2
default_destination_concurrency_limit = 10
smtpd_banner = $myhostname ESMTP
mailbox_delivery_lock = fcntl
debug_peer_level = 1
relay_recipient_maps = hash:/etc/postfix/relay_recipients
local_recipient_maps = hash:/etc/postfix/local_recipient_maps
relay_domains = hash:/etc/postfix/relay_domains
smtpd_client_restrictions =
reject_rbl_client,
permit_tls_clientcerts,
reject_invalid_hostname,
permit_mynetworks
smtpd_helo_restrictions =
reject_rbl_client,
permit_mynetworks,
permit_tls_clientcerts,
reject_non_fqdn_hostname
smtpd_sender_restrictions =
reject_rbl_client,
reject_non_fqdn_sender,
reject_unknown_address
smtpd_recipient_restrictions =
reject_rbl_client,
permit_mynetworks,
permit_sasl_authenticated,
reject_invalid_hostname,
reject_unauth_pipelining,
check_relay_domains
delay_warning_time = 12h
queue_run_delay = 500
maximal_queue_lifetime = 2d
bounce_queue_lifetime = 8h
smtpd_helo_required = yes
line_length_limit = 2048
bounce_size_limit = 50000
notify_classes= resource,software
soft_bounce=no
message_size_limit = 10000000
queue_minfree = 0
default_destination_recipient_limit = 20
command_time_limit = 240
maps_rbl_reject_code = 550
maps_rbl_domains =
relays.ordb.org,
relays.visi.com,
ipwhos.rfc-ignorant.org,
list.dsbl.org,
bl.spamcop.net,
opm.blitzed.org,
list.dsbl.org,
sbl.spamhaus.org,
blackholes.easynet.nl,
cbl.abuseat.org
Final Things : Here are some conf files I added :
local_recipient_maps
@bounces.F.net OK
@F.net OK
transport.map
bounces.F.net bounceh:
relay_recipients
127.0.0.1 OK
XX.XX.XX.XX OK (ip of F.net server)
Relays_domains
bounces.F.net OK
F.net OK
A.net OK
mailing.client1.fr OK
mailing.client2.fr OK
Where am I wrong, and what is necessary to setup bounce handling knowing
that :
1- Bounces return addresses are constructed dynamically, and there is no
real user account corresponding to bounce.xxxx-xxxx-x...@bounces.f.net
2- All bounces received on bounces.f.net must go to php script with no
exception, and must be treated by the script
.
In Any case, thanks for any help that can allow me to understand and set up
bounce handling under postfix
T. de LASSAT
