Dotaz: amavisd-new a pridani hlavicky SPAM

[Tomas3]

Zdravim vsechny, mam debian 4.0 a v nem spusteny amavisd-new + clamav + postfix + spamassassin. Rad bych vyuzil moznosti, kdy odesilam nebo prijimam e-mail, aby se mi v hlavicce e-mailu zobrazilo SCORE SPAMu e-mailové zprávy a např. počet hvězdiček. V debianu je spousta souboru v /etc/amavis/conf.d/ mam to nejak tak nakonfigurovano. V hlavicce se mi zobrazuje pouze X-Virus-Scanned tehdy kdyz mam odkomentovano toto:

@bypass_virus_checks_maps = (
   \%bypass_virus_checks, \@bypass_virus_checks_acl, \$bypass_virus_checks_re);

ale zadna zminka o SPAMu zde neni ma nekdo nejaky svuj konfigurak amavisu v debianu? popr. date mi radu kde mam SPAM tag zapnout? V /etc/amavis/conf.d/20-debian_defaults mam toto:

use strict;

# ADMINSTRATORS:
# Debian suggests that any changes you need to do that should never
# be "updated" by the Debian package should be made in another file,
# overriding the settings in this file.
#
# The package will *not* overwrite your settings, but by keeping
# them separate, you will make the task of merging changes on these
# configuration files much simpler...

#   see /usr/share/doc/amavisd-new/examples/amavisd.conf-default for
#       a list of all variables with their defaults;
#   see /usr/share/doc/amavisd-new/examples/amavisd.conf-sample for
#       a traditional-style commented file  
#   [note: the above files were not converted to Debian settings!]
#
#   for more details see documentation in /usr/share/doc/amavisd-new
#   and at http://www.ijs.si/software/amavisd/amavisd-new-docs.html

$QUARANTINEDIR = "$MYHOME/virusmails";

$mydomain = 'www3.domena.tld';   # a convenient default for other settings

$log_recip_templ = undef;    # disable by-recipient level-0 log entries
$DO_SYSLOG = 1;              # log via syslogd (preferred)
$syslog_ident = 'amavis';    # syslog ident tag, prepended to all messages
$syslog_facility = 'mail';
$syslog_priority = 'debug';  # switch to info to drop debug output, etc

$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;   # default listenting socket

$sa_spam_subject_tag = '***SPAM*** ';

$sa_tag_level_deflt  = -999;  # 1.0 / -999 vsem add spam info headers if at, or above that level
$sa_tag2_level_deflt = 4.9; # add 'spam detected' headers at that level
$sa_kill_level_deflt = 4.9; # triggers spam evasive actions
$sa_dsn_cutoff_level = 10;   # spam level beyond which a DSN is not sent

#$sa_tag_level_deflt  = 2.0;  # add spam info headers if at, or above that level
#$sa_tag2_level_deflt = 6.31; # add 'spam detected' headers at that level
#$sa_kill_level_deflt = 6.31; # triggers spam evasive actions
#$sa_dsn_cutoff_level = 10;   # spam level beyond which a DSN is not sent

$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?

# Quota limits to avoid bombs (like 42.zip)

$MAXLEVELS = 14;
$MAXFILES = 1500;
$MIN_EXPANSION_QUOTA =      100*1024;  # bytes
$MAX_EXPANSION_QUOTA = 300*1024*1024;  # bytes

$notify_method  = 'smtp:[127.0.0.1]:10025';
$forward_method = 'smtp:[127.0.0.1]:10025';  # set to undef with milter!


# You should:
#   Use D_DISCARD to discard data (viruses)
#   Use D_BOUNCE to generate local bounces by amavisd-new
#   Use D_REJECT to generate local or remote bounces by the calling MTA
#   Use D_PASS to deliver the message
#
# Whatever you do, *NEVER* use D_REJECT if you have other MTAs *forwarding*
# mail to your account.  Use D_BOUNCE instead, otherwise you are delegating
# the bounce work to your friendly forwarders, which might not like it at all.
#
# On dual-MTA setups, one can often D_REJECT, as this just makes your own
# MTA generate the bounce message.  Test it first.
#
# Bouncing viruses is stupid, always discard them after you are sure the AV
# is working correctly.  Bouncing real SPAM is also useless, if you cannot
# D_REJECT it (and don't D_REJECT mail coming from your forwarders!).

$final_virus_destiny      = D_DISCARD;  # (data not lost, see virus quarantine)
$final_banned_destiny     = D_BOUNCE;   # D_REJECT when front-end MTA
$final_spam_destiny       = D_BOUNCE;
$final_bad_header_destiny = D_PASS;     # False-positive prone (for spam)

$virus_admin = "postmaster\@$mydomain"; # due to D_DISCARD default

$X_HEADER_TAG = 'X-Virus-Scanned';	# (default: 'X-Virus-Scanned')
# Leave empty (undef) to add no header
$X_HEADER_LINE = "Debian $myproduct_name at $mydomain";
#$X_HEADER_LINE = "by $myproduct_name using ClamAV na serveru $mydomain";
#$X_HEADER_LINE = "$myproduct_name $myversion_id ($myversion_date) na serveru $mydomain";

$remove_existing_x_scanned_headers = 0; # leave existing X-Virus-Scanned alone
#$remove_existing_x_scanned_headers= 1; # remove existing headers
					# (defaults to false)
#$remove_existing_spam_headers = 0;     # leave existing X-Spam* headers alone
$remove_existing_spam_headers  = 1;     # remove existing spam headers if
					# spam scanning is enabled (default)

$undecipherable_subject_tag = '***UNCHECKED*** ';
$sa_spam_subject_tag = undef;
$sa_spam_modifies_subj = 1;
$sa_spam_level_char = '*';
$sa_spam_report_header = undef;


# REMAINING IMPORTANT VARIABLES ARE LISTED HERE BECAUSE OF LONGER ASSIGNMENTS

#
# DO NOT SEND VIRUS NOTIFICATIONS TO OUTSIDE OF YOUR DOMAIN. EVER.
#
# These days, almost all viruses fake the envelope sender and mail headers.
# Therefore, "virus notifications" became nothing but undesired, aggravating
# SPAM.  This holds true even inside one's domain.  We disable them all by
# default, except for the EICAR test pattern.
#

@viruses_that_fake_sender_maps = (new_RE(
  [qr'\bEICAR\b'i => 0],            # av test pattern name
  [qr/.*/ => 1],  # true for everything else
));

@keep_decoded_original_maps = (new_RE(
# qr'^MAIL$',   # retain full original message for virus checking (can be slow)
  qr'^MAIL-UNDECIPHERABLE$', # recheck full mail if it contains undecipherables
  qr'^(ASCII(?! cpio)|text|uuencoded|xxencoded|binhex)'i,
# qr'^Zip archive data',     # don't trust Archive::Zip
));


# for $banned_namepath_re, a new-style of banned table, see amavisd.conf-sample

$banned_filename_re = new_RE(
# qr'^UNDECIPHERABLE$',  # is or contains any undecipherable components

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

  qr'\{[0-9a-f]{8}(-[0-9a-f]{4}){3}-[0-9a-f]{12}\}?'i, # Windows Class ID CLSID, strict

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

# qr'^application/x-msmetafile$'i,	# Windows Metafile MIME type
# qr'^\.wmf$',				# Windows Metafile file(1) type

# qr'^message/partial$'i, qr'^message/external-body$'i, # rfc2046 MIME types

# [ qr'^\.(Z|gz|bz2)$'           => 0 ],  # allow any in Unix-compressed
# [ qr'^\.(rpm|cpio|tar)$'       => 0 ],  # allow any in Unix-type archives
# [ qr'^\.(zip|rar|arc|arj|zoo)$'=> 0 ],  # allow any within such archives

  qr'.\.(exe|vbs|pif|scr|bat|cmd|com|cpl)$'i, # banned extension - basic
# qr'.\.(ade|adp|app|bas|bat|chm|cmd|com|cpl|crt|emf|exe|fxp|grp|hlp|hta|
#        inf|ins|isp|js|jse|lnk|mda|mdb|mde|mdw|mdt|mdz|msc|msi|msp|mst|
#        ops|pcd|pif|prg|reg|scr|sct|shb|shs|vb|vbe|vbs|
#        wmf|wsc|wsf|wsh)$'ix,  # banned ext - long

# qr'.\.(mim|b64|bhx|hqx|xxe|uu|uue)$'i,  # banned extension - WinZip vulnerab.

  qr'^\.(exe-ms)$',                       # banned file(1) types
# qr'^\.(exe|lha|tnef|cab|dll)$',         # banned file(1) types
);
# See http://support.microsoft.com/default.aspx?scid=kb;EN-US;q262631
# and http://www.cknow.com/vtutor/vtextensions.htm


# ENVELOPE SENDER SOFT-WHITELISTING / SOFT-BLACKLISTING

@score_sender_maps = ({ # a by-recipient hash lookup table,
                        # results from all matching recipient tables are summed

# ## per-recipient personal tables  (NOTE: positive: black, negative: white)
# 'user1@example.com'  => [{'bla-mobile.press@example.com' => 10.0}],
# 'user3@example.com'  => [{'.ebay.com'                 => -3.0}],
# 'user4@example.com'  => [{'cleargreen@cleargreen.com' => -7.0,
#                           '.cleargreen.com'           => -5.0}],

  ## site-wide opinions about senders (the '.' matches any recipient)
  '.' => [  # 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],
   ),

#  read_hash("/var/amavis/sender_scores_sitewide"),

   { # a hash-type lookup table (associative array)
     'nobody@cert.org'                        => -3.0,
     'cert-advisory@us-cert.gov'              => -3.0,
     'owner-alert@iss.net'                    => -3.0,
     'slashdot@slashdot.org'                  => -3.0,
     '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,
     'amavis-user-bounces@lists.sourceforge.net' => -3.0,
     'spamassassin.apache.org'                => -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
});

1;  # insure a defined return

Odpovědi

[Null]

Povodne som to hladal aj ja tam ale nenasiel som to.

Poriesil som to to celkom jednoduchov metodov "Hack the source & compile it"

Problem spociva v tom, ze spamassassin tam sice tu hlavicku prida ale amavis ju nasledne odstrani, a tomuto chceme zabranit

prejdi si amavis (je to v perle takze by nemal byt problem)

v gentoo to mam v /usr/sbin/amavisd

keby daco locate amavisd ;)

teraz nemam moc casu ale potom (snad) napisem aj presne co treba upravit ;)

[Null]

Tak som sa predsa na to pozrel :)

okolo riadku 8600
najdi

 $do_tag = $is_local && !$bypassed &&
       ( $blacklisted || !defined $tag_level ||
        ($spam_level+$boost + ($whitelisted?-10:0) >= $tag_level) );

vyhod podmienku $id_local
Vysledok by mal vyzerat asi takto:

      $do_tag = !$bypassed &&
        ( $blacklisted || !defined $tag_level ||
          ($spam_level+$boost + ($whitelisted?-10:0) >= $tag_level) );

Odporucam si to pred upravov odzalohovat Restartni amavis a skus :) a niesom si isty ci som upravoval len toto, ak by to nefungovalo napis

[Tomas3]

Vyreseno problem byl zde:

@local_domains_acl = ( ".$mydomain" ); jsem zmenil takto
@local_domains_acl = (".");

kdy vlastne hlavicku prida vsem domenam

a dale pak nastaveni

$sa_tag_level_deflt  = -999;  # 2.0 add spam info headers if at, or above that level

kde prida do kazdeho mailu hlavicku se SPAM tagem

[Null]

aj takto sa to da :) mne sa to cez konfiguraky nepodarilo :) hlavne ze to ide

[Tomas3]

tedy jeste jedna uprava takto:

@local_domains_acl = ( ".$mydomain","." );

jinak mi z venku nechodily maily

[nold]

Co třeba tady ?

http://cs.wikibooks.org/wiki/Linux_jako_server/Etch/Po%C5%A1ta

# 6.4 Další poladění