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enable spamassassin?
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pgentoo Offline
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Post: #1
enable spamassassin?
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
02-22-2009 04:19 AM
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rbtux Offline
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Post: #2
RE: enable spamassassin?
give me 30 minutes ;-)
02-22-2009 04:20 AM
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pgentoo Offline
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Post: #3
RE: enable spamassassin?
thanks!
02-22-2009 04:31 AM
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rbtux Offline
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Post: #4
RE: enable spamassassin?
might take another 45min ;-)
02-22-2009 04:48 AM
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pgentoo Offline
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Post: #5
RE: enable spamassassin?
No problem, I'll check back later today.

Thanks!
02-22-2009 04:54 AM
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rbtux Offline
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Post: #6
RE: enable spamassassin?
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:
Code:
$max_servers = 5;

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-...l#pid48255

EDIT: Consider using a ramdisk for the amavis temporary directory... this will boost performance... and let you use a higher $max_servers count...
(This post was last modified: 06-03-2009 08:18 AM by rbtux.)
02-22-2009 06:08 AM
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BeNe Offline
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Post: #7
RE: enable spamassassin?
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
(This post was last modified: 02-22-2009 06:46 AM by BeNe.)
02-22-2009 06:40 AM
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rbtux Offline
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Post: #8
RE: enable spamassassin?
yeah... well... maia... you know ;-))
02-22-2009 06:42 AM
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BeNe Offline
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Post: #9
RE: enable spamassassin?
I know Wink
But the Customers love´s it and it is a very easy GUI for them.

Greez BeNe
02-22-2009 06:48 AM
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rbtux Offline
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Post: #10
RE: enable spamassassin?
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.
02-22-2009 06:52 AM
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