[Mailman-Users] Spam/DKIM issues
Marc Bourgeois
marc at kprod.net
Sun Oct 18 15:23:05 CEST 2015
Hi to everyone,
I'm trying to build a few mailing list with mailman.
I've got some trouble with spam/dkim
(In the past it was working out-of-the-box ! -without dkim)
I'm running a Debian 7.9 server, with postfix.
When I'm sending email from a system user, I can see in mail header :
dkim=pass header.i=@example.xyz
I'm experiencing some difficulties to understand how mailman process
outgoing mail with a valid DKIM header.
When a mailing list user send a mail through my list, sometimes header are
filled with a X-Google-DKIM-Signature (depend on sender, gmail/google app
domain...) but no sign of my original DKIM-Signature
I've tried using REMOVE_DKIM_HEADERS yes or no, with no success
Some opendkim issues can be found in mail.log:
opendkim[1507]: 19D41278A1A5: no signing table match for 'kemkem42 at gmail.com
'
Whats this ? Is there a link to my problem ?
Can someone help me with this ?
My conf files below
main.cf
#mtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU)
biff = no
# appending .domain is the MUA's job.
append_dot_mydomain = no
# Uncomment the next line to generate "delayed mail" warnings
#delay_warning_time = 4h
# TLS parameters
smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
smtpd_use_tls=yes
smtpd_tls_session_cache_database = btree:${queue_directory}/smtpd_scache
smtp_tls_session_cache_database = btree:${queue_directory}/smtp_scache
# See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for
# information on enabling SSL in the smtp client.
myhostname = example.xyz
alias_database = hash:/etc/aliases
alias_maps = hash:/var/lib/mailman/data/aliases
myorigin = example.xyz
mydestination = example.xyz, localhost.localdomain, localhost
#mynetworks = 127.0.0.0/8
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
mailbox_command = procmail -a "$EXTENSION"
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
relay_domains = example.xyz, localhost.localdomain, localhost
#secu
smtpd_helo_required = yes
strict_rfc821_envelopes = yes
smtpd_sender_restrictions = permit_mynetworks,
reject_unknown_sender_domain,
warn_if_reject reject_unverified_sender
smtpd_recipient_restrictions =
permit_mynetworks,
reject_non_fqdn_hostname,
reject_non_fqdn_sender,
reject_non_fqdn_recipient,
reject_unauth_destination,
reject_invalid_hostname
smtpd_client_restrictions =
reject_unknown_client,
permit_mynetworks
milter_protocol = 2
milter_default_action = accept
smtpd_milters = inet:localhost:12301
non_smtpd_milters = inet:localhost:12301
inet_protocols = all
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").
#
# 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
#submission inet n - - - - smtpd
# -o smtpd_tls_security_level=encrypt
# -o smtpd_sasl_auth_enable=yes
# -o smtpd_client_restrictions=permit_sasl_authenticated,reject
# -o milter_macro_daemon_name=ORIGINATING
#smtps inet n - - - - smtpd
# -o smtpd_tls_wrappermode=yes
# -o smtpd_sasl_auth_enable=yes
# -o smtpd_client_restrictions=permit_sasl_authenticated,reject
# -o milter_macro_daemon_name=ORIGINATING
#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
proxywrite unix - - n - 1 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}
#
# ====================================================================
#
# 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}
mm_cfg.py
"""This is the module which takes your site-specific settings.
>From a raw distribution it should be copied to mm_cfg.py. If you
already have an mm_cfg.py, be careful to add in only the new settings
you want. The complete set of distributed defaults, with annotation,
are in ./Defaults. In mm_cfg, override only those you want to
change, after the
from Defaults import *
line (see below).
Note that these are just default settings - many can be overridden via the
admin and user interfaces on a per-list or per-user basis.
Note also that some of the settings are resolved against the active list
setting by using the value as a format string against the
list-instance-object's dictionary - see the distributed value of
DEFAULT_MSG_FOOTER for an example."""
#######################################################
# Here's where we get the distributed defaults. #
from Defaults import *
##############################################################
# Put YOUR site-specific configuration below, in mm_cfg.py . #
# See Defaults.py for explanations of the values. #
#-------------------------------------------------------------
# The name of the list Mailman uses to send password reminders
# and similar. Don't change if you want mailman-owner to be
# a valid local part.
MAILMAN_SITE_LIST = 'mailman'
#-------------------------------------------------------------
# If you change these, you have to configure your http server
# accordingly (Alias and ScriptAlias directives in most httpds)
DEFAULT_URL_PATTERN = 'http://%s/cgi-bin/mailman/'
PRIVATE_ARCHIVE_URL = '/cgi-bin/mailman/private'
IMAGE_LOGOS = '/images/mailman/'
#-------------------------------------------------------------
# Default domain for email addresses of newly created MLs
DEFAULT_EMAIL_HOST = 'endymion.xyz'
#-------------------------------------------------------------
# Default host for web interface of newly created MLs
DEFAULT_URL_HOST = 'endymion.xyz'
#-------------------------------------------------------------
# Required when setting any of its arguments.
add_virtualhost(DEFAULT_URL_HOST, DEFAULT_EMAIL_HOST)
#-------------------------------------------------------------
# The default language for this server.
DEFAULT_SERVER_LANGUAGE = 'en'
#-------------------------------------------------------------
# Iirc this was used in pre 2.1, leave it for now
USE_ENVELOPE_SENDER = 0 # Still used?
#-------------------------------------------------------------
# Unset send_reminders on newly created lists
DEFAULT_SEND_REMINDERS = 0
#-------------------------------------------------------------
# Uncomment this if you configured your MTA such that it
# automatically recognizes newly created lists.
# (see /usr/share/doc/mailman/README.Exim4.Debian or
# /usr/share/mailman/postfix-to-mailman.py)
# MTA=None # Misnomer, suppresses alias output on newlist
#-------------------------------------------------------------
# Uncomment if you use Postfix virtual domains (but not
# postfix-to-mailman.py), but be sure to see
# /usr/share/doc/mailman/README.Debian first.
# MTA='Postfix'
#-------------------------------------------------------------
# Uncomment if you want to filter mail with SpamAssassin. For
# more information please visit this website:
# http://www.jamesh.id.au/articles/mailman-spamassassin/
# GLOBAL_PIPELINE.insert(1, 'SpamAssassin')
# Note - if you're looking for something that is imported from mm_cfg, but
you
# didn't find it above, it's probably in
/usr/lib/mailman/Mailman/Defaults.py.
REMOVE_DKIM_HEADERS = No
Thanks for reading
Marc
@obscur_moirage <https://twitter.com/obscur_moirage> | marc-bourgeois.net |
dev.kprod.net | g+ <https://plus.google.com/111579343717579702540>
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