enable spamassassin? - pgentoo - 02-22-2009 04:19 AM
Whats the best way to integrate spamassassin to filter mails after they past postgrey and other postfix checks?
Anyone have a good howto for this?
Thanks,
pGentoo
RE: enable spamassassin? - rbtux - 02-22-2009 04:20 AM
give me 30 minutes ;-)
RE: enable spamassassin? - pgentoo - 02-22-2009 04:31 AM
thanks!
RE: enable spamassassin? - rbtux - 02-22-2009 04:48 AM
might take another 45min ;-)
RE: enable spamassassin? - pgentoo - 02-22-2009 04:54 AM
No problem, I'll check back later today.
Thanks!
RE: enable spamassassin? - rbtux - 02-22-2009 06:08 AM
This is how I would enable spamassassin, along with amavis and clamav. Unlike the amavis configuration with maia or the one that partially comes with ispcp, this method uses amavis as pre-queue filter. That makes it possible to reject spam mails instead of only tagging them...
Code:
apt-get install amavisd-new clamav spamassassin clamav-daemon lzop rpm pax unrar zoo arj p7zip-full lha arc cabextract ripole
add the following lines to /etc/postfix/master.cf after:
Code:
smtp inet n - - - - smtpd
Code:
-o smtpd_proxy_filter=localhost:10024
-o content_filter=
localhost:10025 inet n - n - - smtpd
-o content_filter=
-o smtpd_proxy_filter=
-o smtpd_authorized_xforward_hosts=127.0.0.0/8
-o smtpd_client_restrictions=
-o smtpd_helo_restrictions=
-o smtpd_sender_restrictions=
-o smtpd_recipient_restrictions=permit_mynetworks,reject
-o smtpd_data_restrictions=
-o mynetworks=127.0.0.0/8
-o reveive_override_options=no_unknown_recipient_checks
remove the following from /etc/postfix/master.cf:
Code:
amavis unix - - n - 2 smtp
-o smtp_data_done_timeout=1200
-o smtp_send_xforward_command=yes
-o disable_dns_lookups=yes
localhost:10025 inet n - n - - smtpd
-o content_filter=
-o local_recipient_maps=
-o relay_recipient_maps=
-o smtpd_restriction_classes=
-o smtpd_client_restrictions=
-o smtpd_helo_restrictions=
-o smtpd_sender_restrictions=
-o smtpd_recipient_restrictions=permit_mynetworks,reject
-o smtpd_override_options=no_address_mappings
-o mynetworks=127.0.0.0/8
-o strict_rfc821_envelopes=yes
/etc/master.cf will look like:
Code:
#
# 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
-o smtpd_proxy_filter=localhost:10024
-o content_filter=
localhost:10025 inet n - n - - smtpd
-o content_filter=
-o smtpd_proxy_filter=
-o smtpd_authorized_xforward_hosts=127.0.0.0/8
-o smtpd_client_restrictions=
-o smtpd_helo_restrictions=
-o smtpd_sender_restrictions=
-o smtpd_recipient_restrictions=permit_mynetworks,reject
-o smtpd_data_restrictions=
-o mynetworks=127.0.0.0/8
-o reveive_override_options=no_unknown_recipient_checks
#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
# For AOL-Accounts
587 inet n - - - - smtpd
-o smtpd_client_restrictions=permit_sasl_authenticated,reject_unauth_destination
#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 fallback_relay=
# -o smtp_helo_timeout=5 -o smtp_connect_timeout=5
showq unix n - - - - showq
error 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
# ====================================================================
# ispCP ω (OMEGA) a Virtual Hosting Control System
#
# @copyright 2001-2006 by moleSoftware GmbH
# @copyright 2006-2008 by ispCP | http://isp-control.net
# @version SVN: $Id$
# @link http://isp-control.net
# @author ispCP Team
# ====================================================================
# AMaViS => Antivir / Antispam
# ispCP autoresponder
ispcp-arpl unix - n n - - pipe
flags=O user=vmail argv=/var/www/ispcp/engine/messager/ispcp-arpl-msgr
# TLS - Activate, if TLS is avaiable/used
smtps inet n - - - - smtpd
-o smtpd_tls_wrappermode=yes
-o smtpd_sasl_auth_enable=yes
# -o smtpd_client_restrictions=permit_sasl_authenticated,reject
#
# ====================================================================
# 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} ${user}
change /etc/amavis/conf.d/01-debian:
uncomment
Code:
#$lha = 'lha'; #disabled (non-free, no security support)
#$unrar = ['rar', 'unrar']; #disabled (non-free, no security support)
comment
Code:
$lha = undef;
$unrar = undef;
change /etc/amavis/conf.d/20-debian_defaults:
Code:
$sa_tag2_level_deflt = 5.8;
$sa_kill_level_deflt = 6.41;
$final_virus_destiny = D_REJECT; # (data not lost, see virus quarantine)
$final_banned_destiny = D_REJECT; # D_REJECT when front-end MTA
$final_spam_destiny = D_REJECT;
$final_bad_header_destiny = D_PASS; # False-positive prone (for spam)
change /etc/amavis/conf.d/15-content_filter_mode:
uncomment
Code:
@bypass_virus_checks_maps = (
\%bypass_virus_checks, \@bypass_virus_checks_acl, \$bypass_virus_checks_re);
@bypass_spam_checks_maps = (
\%bypass_spam_checks, \@bypass_spam_checks_acl, \$bypass_spam_checks_re);
change /etc/amavis/conf.d/50-user:
change in /etc/group:
amavis:x:112:
to
amavis:x:112:clamav
to uid may be different
/etc/init.d/clamav-daemon restart
/etc/init.d/amavis restart
/etc/init.d/postfix restart
EDIT: http://www.isp-control.net/forum/thread-5789-post-48255.html#pid48255
EDIT: Consider using a ramdisk for the amavis temporary directory... this will boost performance... and let you use a higher $max_servers count...
RE: enable spamassassin? - BeNe - 02-22-2009 06:40 AM
Thanks rbtux for your nice write up!
Problem is that the AMaVis Daemon which comes with Maia can´t handle DSN.
But i switched yesterday to the proxy version with Maia and disabled dsn.
We will see how it works. The new Version should be able to handle with it.
Greez BeNe
RE: enable spamassassin? - rbtux - 02-22-2009 06:42 AM
yeah... well... maia... you know ;-))
RE: enable spamassassin? - BeNe - 02-22-2009 06:48 AM
I know
But the Customers love´s it and it is a very easy GUI for them.
Greez BeNe
RE: enable spamassassin? - rbtux - 02-22-2009 06:52 AM
well i don't want my customers to do any antispam config... As most of the people here they don't have a clue;-) a robust default setup is enough imho.
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