Postfix

Serveritarkvara paigaldus

amavisd-new

clamav

Kogu süsteem toimib nii, et postfix annab kirja edasi amavisd'le, mis kontrollib seda kasutades amavisd'd ja smapsassassinit

Seadistus postfix

main.cf

content_filter = amavis:[127.0.0.1]:10024

smtpd_sender_restrictions =
       reject_unknown_sender_domain,
       permit_mynetworks,
       reject_rbl_client bl.spamcop.net,
       reject_rbl_client relays.ordb.org,
       reject_rbl_client sbl-xbl.spamhaus.org

master.cf

localhost:10025 inet  n  -      n       -       -       smtpd
   -o content_filter=
   -o local_recipient_maps=
   -o relay_recipient_maps=
   -o myhostname=localhost.eenet.ee
   -o smtpd_helo_restrictions=
   -o smtpd_client_restrictions=
   -o smtpd_sender_restrictions=
   -o smtpd_recipient_restrictions=permit_mynetworks,reject
   -o mynetworks=127.0.0.0/8
#
amavis    unix  -       -       n       -       4       smtp
   -o smtp_data_done_timeout=1200
   -o smtp_send_xforward_command=yes
   -o disable_dns_lookups=yes

konfig amavisd

use strict;

$max_servers = 4;            # number of pre-forked children (2..15 is common)
$daemon_user  = 'vscan';     # (no default;  customary: vscan or amavis)
$daemon_group = 'vscan';     # (no default;  customary: vscan or amavis) 

$mydomain = 'eenet.ee';   # a convenient default for other settings 

$MYHOME   = '/var/amavis';   # a convenient default for other settings
$TEMPBASE = "$MYHOME/tmp";   # working directory, needs to be created manually
$ENV{TMPDIR} = $TEMPBASE;    # environment variable TMPDIR
$QUARANTINEDIR = '/var/virusmails';
@local_domains_maps = ( [".$mydomain"] ); 

$log_level = 2;              # verbosity 0..5
$log_recip_templ = undef;    # disable by-recipient level-0 log entries
$DO_SYSLOG = 1;              # log via syslogd (preferred)
$SYSLOG_LEVEL = 'mail.debug'; 

$enable_db = 1;              # enable use of BerkeleyDB/libdb (SNMP and nanny)
$enable_global_cache = 1;    # enable use of libdb-based cache if $enable_db=1 

$inet_socket_port = 10024;   # listen on this local TCP port(s) (see $protocol)

$sa_tag_level_deflt  = undef;  # add spam info headers if at, or above that level
$sa_tag2_level_deflt = 5.0; # add 'spam detected' headers at that level
$sa_kill_level_deflt = 7.0; # triggers spam evasive actions
$sa_dsn_cutoff_level = 9;    # spam level beyond which a DSN is not sent
$sa_quarantine_cutoff_level = 20;  # spam level beyond which quarantine is off
$sa_mail_body_size_limit = 200*1024; # don't waste time on SA if mail is larger
$sa_local_tests_only = 0;    # only tests which do not require internet access?
$sa_auto_whitelist = 1;      # turn on AWL in SA 2.63 or older (irrelevant
$virus_admin               = undef;  # notifications recip.

$mailfrom_notify_admin     = "virusalert\@$mydomain";  # notifications sender
$mailfrom_notify_recip     = "virusalert\@$mydomain";  # notifications sender
$mailfrom_notify_spamadmin = "spam.police\@$mydomain"; # notifications sender
$mailfrom_to_quarantine = ; # null return path; uses original sender if undef

@addr_extension_virus_maps      = ('virus');
@addr_extension_spam_maps       = ('spam');
@addr_extension_banned_maps     = ('banned');
@addr_extension_bad_header_maps = ('badh');

$path = '/usr/local/sbin:/usr/local/bin:/usr/sbin:/sbin:/usr/bin:/bin';

$MAXLEVELS = 14;
$MAXFILES = 1500;
$MIN_EXPANSION_QUOTA =      100*1024;  # bytes  (default undef, not enforced)
$MAX_EXPANSION_QUOTA = 300*1024*1024;  # bytes  (default undef, not enforced)

$sa_spam_subject_tag = '***SPAM*** ';
$defang_virus  = 1;  # MIME-wrap passed infected mail
$defang_banned = 1;  # MIME-wrap passed mail containing banned name
 
$final_virus_destiny      = D_DISCARD;
$final_banned_destiny     = D_DISCARD;
$final_spam_destiny       = D_DISCARD;
$final_bad_header_destiny = D_PASS;

 [qr/^/ => 1],  # true for everything else
));

@keep_decoded_original_maps = (new_RE(
 qr'^MAIL-UNDECIPHERABLE$', # recheck full mail if it contains undecipherables
 qr'^(ASCII(?! cpio)|text|uuencoded|xxencoded|binhex)'i,
));

$banned_filename_re = new_RE(

 # block certain double extensions anywhere in the base name
 qr'\.[^./]*[A-Za-z][^./]*\.(exe|vbs|pif|scr|bat|cmd|com|cpl|dll)\.?$'i,

 qr'^application/x-msdownload$'i,                  # block these MIME types
 qr'^application/x-msdos-program$'i,
 qr'^application/hta$'i,

 [ qr'^\.(rpm|cpio|tar)$'       => 0 ],  # allow any in Unix-type archives
 qr'.\.(exe|vbs|pif|scr|bat|cmd|com|cpl)$'i, # banned extension - basic
 qr'^\.(exe-ms)$',                       # banned file(1) types
);

@score_sender_maps = ({ # a by-recipient hash lookup table,
                        # results from all matching recipient tables are summed
 '.' => [  # the _first_ matching sender determines the score boost

  new_RE(  # regexp-type lookup table, just happens to be all soft-blacklist
   [qr'^(bulkmail|offers|cheapbenefits|earnmoney|foryou)@'i         => 5.0],
   [qr'^(greatcasino|investments|lose_weight_today|market\.alert)@'i=> 5.0],
   [qr'^(money2you|MyGreenCard|new\.tld\.registry|opt-out|opt-in)@'i=> 5.0],
   [qr'^(optin|saveonlsmoking2002k|specialoffer|specialoffers)@'i   => 5.0],
   [qr'^(stockalert|stopsnoring|wantsome|workathome|yesitsfree)@'i  => 5.0],
   [qr'^(your_friend|greatoffers)@'i                                => 5.0],
   [qr'^(inkjetplanet|marketopt|MakeMoney)\d*@'i                    => 5.0],
  ),

  { # a hash-type lookup table (associative array)
    'pac@c-s.fr'                             => -3.0,
    'nobody@cert.org'                        => -3.0,
    'cert-advisory@us-cert.gov'              => -3.0,
    'owner-alert@iss.net'                    => -3.0,
    'slashdot@slashdot.org'                  => -3.0,
    'bugtraq@securityfocus.com'              => -3.0,
    'ntbugtraq@listserv.ntbugtraq.com'       => -3.0,
    'security-alerts@linuxsecurity.com'      => -3.0,
    'mailman-announce-admin@python.org'      => -3.0,
    'amavis-user-admin@lists.sourceforge.net'=> -3.0,
    'notification-return@lists.sophos.com'   => -3.0,
    'owner-postfix-users@postfix.org'        => -3.0,
    'owner-postfix-announce@postfix.org'     => -3.0,
    'owner-sendmail-announce@lists.sendmail.org'   => -3.0,
    'sendmail-announce-request@lists.sendmail.org' => -3.0,
    'donotreply@sendmail.org'                => -3.0,
    'ca+envelope@sendmail.org'               => -3.0,
    'noreply@freshmeat.net'                  => -3.0,
    'owner-technews@postel.acm.org'          => -3.0,
    'ietf-123-owner@loki.ietf.org'           => -3.0,
    'cvs-commits-list-admin@gnome.org'       => -3.0,
    'rt-users-admin@lists.fsck.com'          => -3.0,
    'clp-request@comp.nus.edu.sg'            => -3.0,
    'surveys-errors@lists.nua.ie'            => -3.0,
    'emailnews@genomeweb.com'                => -5.0,
    'yahoo-dev-null@yahoo-inc.com'           => -3.0,
    'returns.groups.yahoo.com'               => -3.0,
    'clusternews@linuxnetworx.com'           => -3.0,
    lc('lvs-users-admin@LinuxVirtualServer.org')    => -3.0,
    lc('owner-textbreakingnews@CNNIMAIL12.CNN.COM') => -5.0,

    # soft-blacklisting (positive score)
    'sender@example.net'                     =>  3.0,
    '.example.net'                           =>  1.0,
  },
 ],  # end of site-wide tables
});

@decoders = (
 ['mail', \&do_mime_decode],
 ['asc',  \&do_ascii],
 ['uue',  \&do_ascii],
 ['hqx',  \&do_ascii],
 ['ync',  \&do_ascii],
 ['F',    \&do_uncompress, ['unfreeze','freeze -d','melt','fcat'] ],
 ['Z',    \&do_uncompress, ['uncompress','gzip -d','zcat'] ],
 ['gz',   \&do_gunzip],
 ['gz',   \&do_uncompress,  'gzip -d'],
 ['bz2',  \&do_uncompress,  'bzip2 -d'],
 ['lzo',  \&do_uncompress,  'lzop -d'],
 ['rpm',  \&do_uncompress, ['rpm2cpio.pl','rpm2cpio'] ],
 ['cpio', \&do_pax_cpio,   ['pax','gcpio','cpio'] ],
 ['tar',  \&do_pax_cpio,   ['pax','gcpio','cpio'] ],
 ['tar',  \&do_tar],
 ['deb',  \&do_ar,          'ar'],
 ['zip',  \&do_unzip],
 ['rar',  \&do_unrar,      ['rar','unrar'] ],
 ['arj',  \&do_unarj,      ['arj','unarj'] ],
 ['arc',  \&do_arc,        ['nomarch','arc'] ],
 ['zoo',  \&do_zoo,         'zoo'],
 ['lha',  \&do_lha,         'lha'],
 ['cab',  \&do_cabextract,  'cabextract'],
 ['tnef', \&do_tnef],
 ['exe',  \&do_executable, ['rar','unrar'], 'lha', ['arj','unarj'] ],
);

@av_scanners = (

### http://www.clamav.net/
['ClamAV-clamd',
  \&ask_daemon, ["CONTSCAN {}\n", "/var/run/clamav/clamd"],
  qr/\bOK$/, qr/\bFOUND$/,
  qr/^.*?: (?!Infected Archive)(.*) FOUND$/ ],
 
);

@av_scanners_backup = (
);

Automaatne start

amavisd_enable="YES"
clamav_clamd_enable="YES"
clamav_freshclam_enable="YES"

Spamitõrje uuendus

sa-update -D

spamassassin --lint && /usr/local/etc/rc.d/spamd.sh.sample restart

--lint kontrollib ega reeglites kala pole

Kontroll töötamisel

Heidame pilgu maillog faili, kõigi kirjadekohta peaks tekkima rida