Setting up DKIM mail signing and verification from http://www.ijs.si/software/amavisd/
use strict;
# a minimalistic configuration file for amavisd-new with all necessary settings
#
# see amavisd.conf-default for a list of all variables with their defaults;
# see amavisd.conf-sample for a traditional-style commented file;
# for more details see documentation in INSTALL, README_FILES/*
# and at http://www.ijs.si/software/amavisd/amavisd-new-docs.html
# HEADER
$allowed_added_header_fields{lc(‘X-Spam-Checker-Version’)} = 0;
# COMMONLY ADJUSTED SETTINGS:
# @bypass_virus_checks_maps = (1); # controls running of anti-virus code
# @bypass_spam_checks_maps = (1); # controls running of anti-spam code
# $bypass_decode_parts = 1; # controls running of decoders&dearchivers
$max_servers = 2; # num of pre-forked children (2..30 is common), -m
$daemon_user = "amavis"; # (no default; customary: vscan or amavis), -u
$daemon_group = "amavis"; # (no default; customary: vscan or amavis), -g
$mydomain = ‘mail.example.com’; # a convenient default for other settings
# $MYHOME = ‘/var/amavis’; # a convenient default for other settings, -H
$TEMPBASE = "$MYHOME/tmp"; # working directory, needs to exist, -T
$ENV{TMPDIR} = $TEMPBASE; # environment variable TMPDIR, used by SA, etc.
#$QUARANTINEDIR = "/var/virusmails";
# $quarantine_subdir_levels = 1; # add level of subdirs to disperse quarantine
# $release_format = ‘resend’; # ‘attach’, ‘plain’, ‘resend’
# $report_format = ‘arf’; # ‘attach’, ‘plain’, ‘resend’, ‘arf’
# $daemon_chroot_dir = $MYHOME; # chroot directory or undef, -R
$db_home = "$MYHOME/db"; # dir for bdb nanny/cache/snmp databases, -D
# $helpers_home = "$MYHOME/var"; # working directory for SpamAssassin, -S
# $lock_file = "$MYHOME/var/amavisd.lock"; # -L
# $pid_file = "$MYHOME/var/amavisd.pid"; # -P
#NOTE: create directories $MYHOME/tmp, $MYHOME/var, $MYHOME/db manually
$log_level = 0; # verbosity 0..5, -d
$log_recip_templ = undef; # disable by-recipient level-0 log entries
$DO_SYSLOG = 1; # log via syslogd (preferred)
$syslog_facility = ‘mail’; # Syslog facility as a string
# e.g.: mail, daemon, user, local0, … local7
$syslog_priority = ‘debug’; # Syslog base (minimal) priority as a string,
# choose from: emerg, alert, crit, err, warning, notice, info, 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
$nanny_details_level = 2; # nanny verbosity: 1: traditional, 2: detailed
$enable_dkim_verification = 1; # enable DKIM signatures verification
$enable_dkim_signing = 1; # load DKIM signing code, keys defined by dkim_key
dkim_key(‘example.com’, ‘dkim’, ‘/etc/dkim/example.com.key.pem’);
@dkim_signature_options_bysender_maps = ( { ‘.’ => { ttl => 21*24*3600, c => ‘relaxed/simple’ } } );
@mynetworks = qw(127.0.0.0/8 [::1] [FE80::]/10 [FEC0::]/10
); # list your internal networks
#@local_domains_maps = ( [".$mydomain"] ); # list of all local domains
@local_domains_maps = ( 1 );
#@local_domains_maps = ( ["."] ); # list of all local domains
#@mynetworks = qw( 127.0.0.0/8 [::1] [FE80::]/10 [FEC0::]/10
# 10.0.0.0/8 172.16.0.0/12 192.168.0.0/16 );
$unix_socketname = "$MYHOME/amavisd.sock"; # amavisd-release or amavis-milter
# option(s) -p overrides $inet_socket_port and $unix_socketname
# $inet_socket_port = 10024; # listen on this local TCP port(s)
$inet_socket_port = [10024,10026]; # listen on multiple TCP ports
$policy_bank{‘MYNETS’} = { # mail originating from @mynetworks
originating => 1, # is true in MYNETS by default, but let’s make it explicit
os_fingerprint_method => undef, # don’t query p0f for internal clients
};
# it is up to MTA to re-route mail from authenticated roaming users or
# from internal hosts to a dedicated TCP port (such as 10026) for filtering
$interface_policy{‘10026’} = ‘ORIGINATING’;
$policy_bank{‘ORIGINATING’} = { # mail supposedly originating from our users
originating => 1, # declare that mail was submitted by our smtp client
allow_disclaimers => 1, # enables disclaimer insertion if available
# notify administrator of locally originating malware
virus_admin_maps => ["virusalert\@$mydomain"],
spam_admin_maps => ["virusalert\@$mydomain"],
warnbadhsender => 1,
# forward to a smtpd service providing DKIM signing service
forward_method => ‘smtp:[127.0.0.1]:10027’,
# force MTA conversion to 7-bit (e.g. before DKIM signing)
smtpd_discard_ehlo_keywords => [‘8BITMIME’],
bypass_banned_checks_maps => [1], # allow sending any file names and types
terminate_dsn_on_notify_success => 0, # don’t remove NOTIFY=SUCCESS option
};
$interface_policy{‘SOCK’} = ‘AM.PDP-SOCK’; # only applies with $unix_socketname
# Use with amavis-release over a socket or with Petr Rehor’s amavis-milter.c
# (with amavis-milter.c from this package or old amavis.c client use ‘AM.CL’):
$policy_bank{‘AM.PDP-SOCK’} = {
protocol => ‘AM.PDP’,
auth_required_release => 0, # do not require secret_id for amavisd-release
};
$sa_tag_level_deflt = 2.0; # add spam info headers if at, or above that level
$sa_tag2_level_deflt = 14; # add ‘spam detected’ headers at that level
$sa_kill_level_deflt = 11.9; # triggers spam evasive actions (e.g. blocks mail)
$sa_dsn_cutoff_level = 13; # spam level beyond which a DSN is not sent
$sa_crediblefrom_dsn_cutoff_level = 18; # likewise, but for a likely valid From
# $sa_quarantine_cutoff_level = 25; # spam level beyond which quarantine is off
$penpals_bonus_score = 8; # (no effect without a @storage_sql_dsn database)
$penpals_threshold_high = $sa_kill_level_deflt; # don’t waste time on hi spam
$bounce_killer_score = 100; # spam score points to add for joe-jobbed bounces
$sa_mail_body_size_limit = 400*1024; # don’t waste time on SA if mail is larger
$sa_local_tests_only = 0; # only tests which do not require internet access?
# @lookup_sql_dsn =
# ( [‘DBI:mysql:database=mail;host=127.0.0.1;port=3306’, ‘user1’, ‘passwd1’],
# [‘DBI:mysql:database=mail;host=host2’, ‘username2’, ‘password2’],
# ["DBI:SQLite:dbname=$MYHOME/sql/mail_prefs.sqlite", ”, ”] );
# @storage_sql_dsn = @lookup_sql_dsn; # none, same, or separate database
# $timestamp_fmt_mysql = 1; # if using MySQL *and* msgs.time_iso is TIMESTAMP;
# defaults to 0, which is good for non-MySQL or if msgs.time_iso is CHAR(16)
$virus_admin = "virusalert\@$mydomain"; # 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
$hdr_encoding = ‘utf-8’; # header field bodies charset
$bdy_encoding = ‘utf-8’; # notification body text charset
$hdr_encoding_qb = ‘Q’; # quoted-printable (Q or B)
$warnvirussender = 1; # I want to warn people, who have got virus.
$warnbannedsender = 1;
$warnbadhsender = 1;
$warnspamsender = 1;
$warnvirusrecip = 1; # I want to warn my users about virus send to them.
$warnbannedrecip = 1;
$warnbadhrecip = 1;
$warn_offsite = 0; # I want to warn senders/recipients, that are not
#$hdrfrom_notify_sender = ‘spam.police’;
$hdrfrom_notify_sender = "\"Content-filter at mx.example.com\" <spam.police\@$myhostname>";
@addr_extension_virus_maps = (‘virus’);
@addr_extension_banned_maps = (‘banned’);
@addr_extension_spam_maps = (‘spam’);
@addr_extension_bad_header_maps = (‘badh’);
# $recipient_delimiter = ‘+’; # undef disables address extensions altogether
# when enabling addr extensions do also Postfix/main.cf: recipient_delimiter=+
$path = ‘/usr/local/sbin:/usr/local/bin:/usr/sbin:/sbin:/usr/bin:/bin’;
# $dspam = ‘dspam’;
$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
# for defanging bad headers only turn on certain minor contents categories:
$defang_by_ccat{+CC_BADH.",3"} = 1; # NUL or CR character in header
$defang_by_ccat{+CC_BADH.",5"} = 1; # header line longer than 998 characters
$defang_by_ccat{+CC_BADH.",6"} = 1; # header field syntax error
# OTHER MORE COMMON SETTINGS (defaults may suffice):
$myhostname = ‘mx.example.com’; # must be a fully-qualified domain name!
$notify_method = ‘smtp:[127.0.0.1]:10027’;
$forward_method = ‘smtp:[127.0.0.1]:10025’; # set to undef with milter!
$final_virus_destiny = D_DISCARD;
$final_banned_destiny = D_BOUNCE;
$final_spam_destiny = D_PASS;
$final_bad_header_destiny = D_PASS;
# $bad_header_quarantine_method = undef;
# $os_fingerprint_method = ‘p0f:*:2345’; # to query p0f-analyzer.pl
## hierarchy by which a final setting is chosen:
## policy bank (based on port or IP address) -> *_by_ccat
## *_by_ccat (based on mail contents) -> *_maps
## *_maps (based on recipient address) -> final configuration value
# SOME OTHER VARIABLES WORTH CONSIDERING (see amavisd.conf-default for all)
# $warnbadhsender,
# $warnvirusrecip, $warnbannedrecip, $warnbadhrecip, (or @warn*recip_maps)
#
# @bypass_virus_checks_maps, @bypass_spam_checks_maps,
# @bypass_banned_checks_maps, @bypass_header_checks_maps,
#
# @virus_lovers_maps, @spam_lovers_maps,
# @banned_files_lovers_maps, @bad_header_lovers_maps,
#
# @blacklist_sender_maps, @score_sender_maps,
#
# $clean_quarantine_method, $virus_quarantine_to, $banned_quarantine_to,
# $bad_header_quarantine_to, $spam_quarantine_to,
#
# $defang_bad_header, $defang_undecipherable, $defang_spam
# REMAINING IMPORTANT VARIABLES ARE LISTED HERE BECAUSE OF LONGER ASSIGNMENTS
@keep_decoded_original_maps = (new_RE(
qr’^MAIL$’, # retain full original message for virus checking
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
$banned_filename_re = new_RE(
### BLOCKED ANYWHERE
# qr’^UNDECIPHERABLE$’, # is or contains any undecipherable components
# qr’^\.(exe-ms|dll)$’, # banned file(1) types, rudimentary
qr’^\.(exe|lha|tnef|cab|dll)$’, # banned file(1) types
### BLOCK THE FOLLOWING, EXCEPT WITHIN UNIX ARCHIVES:
# [ qr’^\.(gz|bz2)$’ => 0 ], # allow any in gzip or bzip2
[ qr’^\.(rpm|cpio|tar)$’ => 0 ], # allow any in Unix-type archives
qr’.\.(pif|scr)$’i, # banned extensions – rudimentary
# qr’^\.zip$’, # block zip type
### BLOCK THE FOLLOWING, EXCEPT WITHIN ARCHIVES:
# [ qr’^\.(zip|rar|arc|arj|zoo)$’=> 0 ], # allow any within these archives
qr’^application/x-msdownload$’i, # block these MIME types
qr’^application/x-msdos-program$’i,
qr’^application/hta$’i,
# qr’^message/partial$’i, # rfc2046 MIME type
# qr’^message/external-body$’i, # rfc2046 MIME type
# qr’^(application/x-msmetafile|image/x-wmf)$’i, # Windows Metafile MIME type
# qr’^\.wmf$’, # Windows Metafile file(1) type
# block certain double extensions in filenames
qr’\.[^./]*[A-Za-z][^./]*\.\s*(exe|vbs|pif|scr|bat|cmd|com|cpl|dll)[.\s]*$’i,
# qr’\{[0-9a-f]{8}(-[0-9a-f]{4}){3}-[0-9a-f]{12}\}?’i, # Class ID CLSID, strict
# qr’\{[0-9a-z]{4,}(-[0-9a-z]{4,}){0,7}\}?’i, # Class ID extension CLSID, loose
qr’.\.(exe|vbs|pif|scr|cpl)$’i, # banned extension – basic
# qr’.\.(exe|vbs|pif|scr|cpl|bat|cmd|com)$’i, # banned extension – basic+cmd
# qr’.\.(ade|adp|app|bas|bat|chm|cmd|com|cpl|crt|emf|exe|fxp|grp|hlp|hta|
# inf|ins|isp|js|jse|lnk|mda|mdb|mde|mdw|mdt|mdz|msc|msi|msp|mst|
# ops|pcd|pif|prg|reg|scr|sct|shb|shs|vb|vbe|vbs|
# wmf|wsc|wsf|wsh)$’ix, # banned ext – long
# qr’.\.(ani|cur|ico)$’i, # banned cursors and icons filename
# qr’^\.ani$’, # banned animated cursor file(1) type
# qr’.\.(mim|b64|bhx|hqx|xxe|uu|uue)$’i, # banned extension – WinZip vulnerab.
);
# 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
});
@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_uncompress, ‘gzip -d’],
[‘gz’, \&do_gunzip],
[‘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’] ],
[‘deb’, \&do_ar, ‘ar’],
# [‘a’, \&do_ar, ‘ar’], # unpacking .a seems an overkill
[‘zip’, \&do_unzip],
[‘7z’, \&do_7zip, [‘7zr’,’7za’,’7z’] ],
[‘rar’, \&do_unrar, [‘rar’,’unrar’] ],
[‘arj’, \&do_unarj, [‘arj’,’unarj’] ],
[‘arc’, \&do_arc, [‘nomarch’,’arc’] ],
[‘zoo’, \&do_zoo, [‘zoo’,’unzoo’] ],
[‘lha’, \&do_lha, ‘lha’],
# [‘doc’, \&do_ole, ‘ripole’],
[‘cab’, \&do_cabextract, ‘cabextract’],
[‘tnef’, \&do_tnef_ext, ‘tnef’],
[‘tnef’, \&do_tnef],
# [‘sit’, \&do_unstuff, ‘unstuff’], # broken/unsafe decoder
[‘exe’, \&do_executable, [‘rar’,’unrar’], ‘lha’, [‘arj’,’unarj’] ],
);
@av_scanners = (
# ### http://www.clanfield.info/sophie/ (http://www.vanja.com/tools/sophie/)
# [‘Sophie’,
# \&ask_daemon, ["{}/\n", ‘/var/run/sophie’],
# qr/(?x)^ 0+ ( : | [\000\r\n]* $)/m, qr/(?x)^ 1 ( : | [\000\r\n]* $)/m,
# qr/(?x)^ [-+]? \d+ : (.*?) [\000\r\n]* $/m ],
# ### http://www.csupomona.edu/~henson/www/projects/SAVI-Perl/
# [‘Sophos SAVI’, \&sophos_savi ],
# ### http://www.clamav.net/
# [‘ClamAV-clamd’,
# \&ask_daemon, ["CONTSCAN {}\n", "/var/run/clamav/clamd"],
# qr/\bOK$/m, qr/\bFOUND$/m,
# qr/^.*?: (?!Infected Archive)(.*) FOUND$/m ],
# # NOTE: run clamd under the same user as amavisd, or run it under its own
# # uid such as clamav, add user clamav to the amavis group, and then add
# # AllowSupplementaryGroups to clamd.conf;
# # NOTE: match socket name (LocalSocket) in clamav.conf to the socket name in
# # this entry; when running chrooted one may prefer socket "$MYHOME/clamd".
### http://www.clamav.net/
[‘ClamAV-clamd’,
\&ask_daemon, ["CONTSCAN {}\n", "/var/run/clamav/clamd.sock"],
qr/\bOK$/, qr/\bFOUND$/,
qr/^.*?: (?!Infected Archive)(.*) FOUND$/ ],
# ### http://www.clamav.net/ and CPAN (memory-hungry! clamd is preferred)
# # note that Mail::ClamAV requires perl to be build with threading!
# [‘Mail::ClamAV’, \&ask_clamav, "*", [0], [1], qr/^INFECTED: (.+)/m ],
# ### http://www.openantivirus.org/
# [‘OpenAntiVirus ScannerDaemon (OAV)’,
# \&ask_daemon, ["SCAN {}\n", ‘127.0.0.1:8127’],
# qr/^OK/m, qr/^FOUND: /m, qr/^FOUND: (.+)/m ],
# ### http://www.vanja.com/tools/trophie/
# [‘Trophie’,
# \&ask_daemon, ["{}/\n", ‘/var/run/trophie’],
# qr/(?x)^ 0+ ( : | [\000\r\n]* $)/m, qr/(?x)^ 1 ( : | [\000\r\n]* $)/m,
# qr/(?x)^ [-+]? \d+ : (.*?) [\000\r\n]* $/m ],
# ### http://www.grisoft.com/
# [‘AVG Anti-Virus’,
# \&ask_daemon, ["SCAN {}\n", ‘127.0.0.1:55555’],
# qr/^200/m, qr/^403/m, qr/^403 .*?: ([^\r\n]+)/m ],
# ### http://www.f-prot.com/
# [‘F-Prot fpscand’, # F-PROT Antivirus for BSD/Linux/Solaris, version 6
# \&ask_daemon,
# ["SCAN FILE {}/*\n", ‘127.0.0.1:10200’],
# qr/^(0|8|64) /m,
# qr/^([1235679]|1[01345]) |<[^>:]*(?i)(infected|suspicious|unwanted)/m,
# qr/(?i)<[^>:]*(?:infected|suspicious|unwanted)[^>:]*: ([^>]*)>/m ],
# ### http://www.f-prot.com/
# [‘F-Prot f-protd’, # old version
# \&ask_daemon,
# ["GET {}/*?-dumb%20-archive%20-packed HTTP/1.0\r\n\r\n",
# [‘127.0.0.1:10200’, ‘127.0.0.1:10201’, ‘127.0.0.1:10202’,
# ‘127.0.0.1:10203’, ‘127.0.0.1:10204’] ],
# qr/(?i)<summary[^>]*>clean<\/summary>/m,
# qr/(?i)<summary[^>]*>infected<\/summary>/m,
# qr/(?i)<name>(.+)<\/name>/m ],
# ### http://www.sald.com/, http://www.dials.ru/english/, http://www.drweb.ru/
# [‘DrWebD’, \&ask_daemon, # DrWebD 4.31 or later
# [pack(‘N’,1). # DRWEBD_SCAN_CMD
# pack(‘N’,0x00280001). # DONT_CHANGEMAIL, IS_MAIL, RETURN_VIRUSES
# pack(‘N’, # path length
# length("$TEMPBASE/amavis-yyyymmddTHHMMSS-xxxxx/parts/pxxx")).
# ‘{}/*’. # path
# pack(‘N’,0). # content size
# pack(‘N’,0),
# ‘/var/drweb/run/drwebd.sock’,
# # ‘/var/amavis/var/run/drwebd.sock’, # suitable for chroot
# # ‘/usr/local/drweb/run/drwebd.sock’, # FreeBSD drweb ports default
# # ‘127.0.0.1:3000’, # or over an inet socket
# ],
# qr/\A\x00[\x10\x11][\x00\x10]\x00/sm, # IS_CLEAN,EVAL_KEY; SKIPPED
# qr/\A\x00[\x00\x01][\x00\x10][\x20\x40\x80]/sm,# KNOWN_V,UNKNOWN_V,V._MODIF
# qr/\A.{12}(?:infected with )?([^\x00]+)\x00/sm,
# ],
# # NOTE: If using amavis-milter, change length to:
# # length("$TEMPBASE/amavis-milter-xxxxxxxxxxxxxx/parts/pxxx").
### http://www.kaspersky.com/ (kav4mailservers)
# [‘KasperskyLab AVP – aveclient’,
# [‘/usr/local/kav/bin/aveclient’,’/usr/local/share/kav/bin/aveclient’,
# ‘/opt/kav/5.5/kav4mailservers/bin/aveclient’,’aveclient’],
# ‘-p /var/run/aveserver -s {}/*’,
# [0,3,6,8], qr/\b(INFECTED|SUSPICION|SUSPICIOUS)\b/m,
# qr/(?:INFECTED|WARNING|SUSPICION|SUSPICIOUS) (.+)/m,
# ],
# NOTE: one may prefer [0],[2,3,4,5], depending on how suspicious,
# currupted or protected archives are to be handled
### http://www.kaspersky.com/
# [‘KasperskyLab AntiViral Toolkit Pro (AVP)’, [‘avp’],
# ‘-* -P -B -Y -O- {}’, [0,3,6,8], [2,4], # any use for -A -K ?
# qr/infected: (.+)/m,
# sub {chdir(‘/opt/AVP’) or die "Can’t chdir to AVP: $!"},
# sub {chdir($TEMPBASE) or die "Can’t chdir back to $TEMPBASE $!"},
# ],
### The kavdaemon and AVPDaemonClient have been removed from Kasperky
### products and replaced by aveserver and aveclient
# [‘KasperskyLab AVPDaemonClient’,
# [ ‘/opt/AVP/kavdaemon’, ‘kavdaemon’,
# ‘/opt/AVP/AvpDaemonClient’, ‘AvpDaemonClient’,
# ‘/opt/AVP/AvpTeamDream’, ‘AvpTeamDream’,
# ‘/opt/AVP/avpdc’, ‘avpdc’ ],
# "-f=$TEMPBASE {}", [0,8], [3,4,5,6], qr/infected: ([^\r\n]+)/m ],
# change the startup-script in /etc/init.d/kavd to:
# DPARMS="-* -Y -dl -f=/var/amavis /var/amavis"
# (or perhaps: DPARMS="-I0 -Y -* /var/amavis" )
# adjusting /var/amavis above to match your $TEMPBASE.
# The ‘-f=/var/amavis’ is needed if not running it as root, so it
# can find, read, and write its pid file, etc., see ‘man kavdaemon’.
# defUnix.prf: there must be an entry "*/var/amavis" (or whatever
# directory $TEMPBASE specifies) in the ‘Names=’ section.
# cd /opt/AVP/DaemonClients; configure; cd Sample; make
# cp AvpDaemonClient /opt/AVP/
# su – vscan -c "${PREFIX}/kavdaemon ${DPARMS}"
### http://www.centralcommand.com/
# [‘CentralCommand Vexira (new) vascan’,
# [‘vascan’,’/usr/lib/Vexira/vascan’],
# "-a s –timeout=60 –temp=$TEMPBASE -y $QUARANTINEDIR ".
# "–log=/var/log/vascan.log {}",
# [0,3], [1,2,5],
# qr/(?x)^\s* (?:virus|iworm|macro|mutant|sequence|trojan)\ found:\ ( [^\]\s’]+ )\ \.\.\.\ /m ],
# Adjust the path of the binary and the virus database as needed.
# ‘vascan’ does not allow to have the temp directory to be the same as
# the quarantine directory, and the quarantine option can not be disabled.
# If $QUARANTINEDIR is not used, then another directory must be specified
# to appease ‘vascan’. Move status 3 to the second list if password
# protected files are to be considered infected.
### http://www.avira.com/
### Avira AntiVir (formerly H+BEDV) or (old) CentralCommand Vexira Antivirus
# [‘Avira AntiVir’, [‘antivir’,’vexira’],
# ‘–allfiles -noboot -nombr -rs -s -z {}’, [0], qr/ALERT:|VIRUS:/m,
# qr/(?x)^\s* (?: ALERT: \s* (?: \[ | [^’]* ‘ ) |
# (?i) VIRUS:\ .*?\ virus\ ‘?) ( [^\]\s’]+ )/m ],
# NOTE: if you only have a demo version, remove -z and add 214, as in:
# ‘–allfiles -noboot -nombr -rs -s {}’, [0,214], qr/ALERT:|VIRUS:/,
### http://www.commandsoftware.com/
# [‘Command AntiVirus for Linux’, ‘csav’,
# ‘-all -archive -packed {}’, [50], [51,52,53],
# qr/Infection: (.+)/m ],
### http://www.symantec.com/
# [‘Symantec CarrierScan via Symantec CommandLineScanner’,
# ‘cscmdline’, ‘-a scan -i 1 -v -s 127.0.0.1:7777 {}’,
# qr/^Files Infected:\s+0$/m, qr/^Infected\b/m,
# qr/^(?:Info|Virus Name):\s+(.+)/m ],
### http://www.symantec.com/
# [‘Symantec AntiVirus Scan Engine’,
# ‘savsecls’, ‘-server 127.0.0.1:7777 -mode scanrepair -details -verbose {}’,
# [0], qr/^Infected\b/m,
# qr/^(?:Info|Virus Name):\s+(.+)/m ],
# NOTE: check options and patterns to see which entry better applies
# ### http://www.f-secure.com/products/anti-virus/ version 4.65
# [‘F-Secure Antivirus for Linux servers’,
# [‘/opt/f-secure/fsav/bin/fsav’, ‘fsav’],
# ‘–delete=no –disinf=no –rename=no –archive=yes –auto=yes ‘.
# ‘–dumb=yes –list=no –mime=yes {}’, [0], [3,6,8],
# qr/(?:infection|Infected|Suspected): (.+)/m ],
### http://www.f-secure.com/products/anti-virus/ version 5.52
# [‘F-Secure Antivirus for Linux servers’,
# [‘/opt/f-secure/fsav/bin/fsav’, ‘fsav’],
# ‘–virus-action1=report –archive=yes –auto=yes ‘.
# ‘–dumb=yes –list=no –mime=yes {}’, [0], [3,4,6,8],
# qr/(?:infection|Infected|Suspected|Riskware): (.+)/m ],
# NOTE: internal archive handling may be switched off by ‘–archive=no’
# to prevent fsav from exiting with status 9 on broken archives
# ### http://www.avast.com/
# [‘avast! Antivirus daemon’,
# \&ask_daemon, # greets with 220, terminate with QUIT
# ["SCAN {}\015\012QUIT\015\012", ‘/var/run/avast4/mailscanner.sock’],
# qr/\t\[\+\]/m, qr/\t\[L\]\t/m, qr/\t\[L\]\t([^[ \t\015\012]+)/m ],
# ### http://www.avast.com/
# [‘avast! Antivirus – Client/Server Version’, ‘avastlite’,
# ‘-a /var/run/avast4/mailscanner.sock -n {}’, [0], [1],
# qr/\t\[L\]\t([^[ \t\015\012]+)/m ],
# [‘CAI InoculateIT’, ‘inocucmd’, # retired product
# ‘-sec -nex {}’, [0], [100],
# qr/was infected by virus (.+)/m ],
# see: http://www.flatmtn.com/computer/Linux-Antivirus_CAI.html
### http://www3.ca.com/Solutions/Product.asp?ID=156 (ex InoculateIT)
# [‘CAI eTrust Antivirus’, ‘etrust-wrapper’,
# ‘-arc -nex -spm h {}’, [0], [101],
# qr/is infected by virus: (.+)/m ],
# NOTE: requires suid wrapper around inocmd32; consider flag: -mod reviewer
# see http://marc.theaimsgroup.com/?l=amavis-user&m=109229779912783
### http://mks.com.pl/english.html
# [‘MkS_Vir for Linux (beta)’, [‘mks32′,’mks’],
# ‘-s {}/*’, [0], [1,2],
# qr/–[ \t]*(.+)/m ],
### http://mks.com.pl/english.html
# [‘MkS_Vir daemon’, ‘mksscan’,
# ‘-s -q {}’, [0], [1..7],
# qr/^… (\S+)/m ],
# ### http://www.nod32.com/, version v2.52 (old)
# [‘ESET NOD32 for Linux Mail servers’,
# [‘/opt/eset/nod32/bin/nod32cli’, ‘nod32cli’],
# ‘–subdir –files -z –sfx –rtp –adware –unsafe –pattern –heur ‘.
# ‘-w -a –action-on-infected=accept –action-on-uncleanable=accept ‘.
# ‘–action-on-notscanned=accept {}’,
# [0,3], [1,2], qr/virus="([^"]+)"/m ],
# ### http://www.eset.com/, version v2.7 (old)
# [‘ESET NOD32 Linux Mail Server – command line interface’,
# [‘/usr/bin/nod32cli’, ‘/opt/eset/nod32/bin/nod32cli’, ‘nod32cli’],
# ‘–subdir {}’, [0,3], [1,2], qr/virus="([^"]+)"/m ],
# ### http://www.eset.com/, version 2.71.12
# [‘ESET Software ESETS Command Line Interface’,
# [‘/usr/bin/esets_cli’, ‘esets_cli’],
# ‘–subdir {}’, [0], [1,2,3], qr/virus="([^"]+)"/m ],
### http://www.eset.com/, version 3.0
# [‘ESET Software ESETS Command Line Interface’,
# [‘/usr/bin/esets_cli’, ‘esets_cli’],
# ‘–subdir {}’, [0], [1,2,3],
# qr/:\s*action="(?!accepted)[^"]*"\n.*:\s*virus="([^"]*)"/m ],
## http://www.nod32.com/, NOD32LFS version 2.5 and above
# [‘ESET NOD32 for Linux File servers’,
# [‘/opt/eset/nod32/sbin/nod32′,’nod32’],
# ‘–files -z –mail –sfx –rtp –adware –unsafe –pattern –heur ‘.
# ‘-w -a –action=1 -b {}’,
# [0], [1,10], qr/^object=.*, virus="(.*?)",/m ],
# Experimental, based on posting from Rado Dibarbora (Dibo) on 2002-05-31
# [‘ESET Software NOD32 Client/Server (NOD32SS)’,
# \&ask_daemon2, # greets with 200, persistent, terminate with QUIT
# ["SCAN {}/*\r\n", ‘127.0.0.1:8448’ ],
# qr/^200 File OK/m, qr/^201 /m, qr/^201 (.+)/m ],
### http://www.norman.com/products_nvc.shtml
# [‘Norman Virus Control v5 / Linux’, ‘nvcc’,
# ‘-c -l:0 -s -u -temp:$TEMPBASE {}’, [0,10,11], [1,2,14],
# qr/(?i).* virus in .* -> \'(.+)\’/m ],
### http://www.pandasoftware.com/
# [‘Panda CommandLineSecure 9 for Linux’,
# [‘/opt/pavcl/usr/bin/pavcl’,’pavcl’],
# ‘-auto -aex -heu -cmp -nbr -nor -nos -eng -nob {}’,
# qr/Number of files infected[ .]*: 0+(?!\d)/m,
# qr/Number of files infected[ .]*: 0*[1-9]/m,
# qr/Found virus :\s*(\S+)/m ],
# NOTE: for efficiency, start the Panda in resident mode with ‘pavcl -tsr’
# before starting amavisd – the bases are then loaded only once at startup.
# To reload bases in a signature update script:
# /opt/pavcl/usr/bin/pavcl -tsr -ulr; /opt/pavcl/usr/bin/pavcl -tsr
# Please review other options of pavcl, for example:
# -nomalw, -nojoke, -nodial, -nohackt, -nospyw, -nocookies
# ### http://www.pandasoftware.com/
# [‘Panda Antivirus for Linux’, [‘pavcl’],
# ‘-TSR -aut -aex -heu -cmp -nbr -nor -nso -eng {}’,
# [0], [0x10, 0x30, 0x50, 0x70, 0x90, 0xB0, 0xD0, 0xF0],
# qr/Found virus :\s*(\S+)/m ],
# GeCAD AV technology is acquired by Microsoft; RAV has been discontinued.
# Check your RAV license terms before fiddling with the following two lines!
# [‘GeCAD RAV AntiVirus 8’, ‘ravav’,
# ‘–all –archive –mail {}’, [1], [2,3,4,5], qr/Infected: (.+)/m ],
# # NOTE: the command line switches changed with scan engine 8.5 !
# # (btw, assigning stdin to /dev/null causes RAV to fail)
### http://www.nai.com/
# [‘NAI McAfee AntiVirus (uvscan)’, ‘uvscan’,
# ‘–secure -rv –mime –summary –noboot – {}’, [0], [13],
# qr/(?x) Found (?:
# \ the\ (.+)\ (?:virus|trojan) |
# \ (?:virus|trojan)\ or\ variant\ ([^ ]+) |
# :\ (.+)\ NOT\ a\ virus)/m,
# sub {$ENV{LD_PRELOAD}=’/lib/libc.so.6′},
# sub {delete $ENV{LD_PRELOAD}},
# ],
# NOTE1: with RH9: force the dynamic linker to look at /lib/libc.so.6 before
# anything else by setting environment variable LD_PRELOAD=/lib/libc.so.6
# and then clear it when finished to avoid confusing anything else.
# NOTE2: to treat encrypted files as viruses replace the [13] with:
# qr/^\s{5,}(Found|is password-protected|.*(virus|trojan))/
### http://www.virusbuster.hu/en/
# [‘VirusBuster’, [‘vbuster’, ‘vbengcl’],
# "{} -ss -i ‘*’ -log=$MYHOME/vbuster.log", [0], [1],
# qr/: ‘(.*)’ – Virus/m ],
# VirusBuster Ltd. does not support the daemon version for the workstation
# engine (vbuster-eng-1.12-linux-i386-libc6.tgz) any longer. The names of
# binaries, some parameters AND return codes have changed (from 3 to 1).
# See also the new Vexira entry ‘vascan’ which is possibly related.
# ### http://www.virusbuster.hu/en/
# [‘VirusBuster (Client + Daemon)’, ‘vbengd’,
# ‘-f -log scandir {}’, [0], [3],
# qr/Virus found = (.*);/m ],
# # HINT: for an infected file it always returns 3,
# # although the man-page tells a different story
### http://www.cyber.com/
# [‘CyberSoft VFind’, ‘vfind’,
# ‘–vexit {}/*’, [0], [23], qr/##==>>>> VIRUS ID: CVDL (.+)/m,
# sub {$ENV{VSTK_HOME}=’/usr/lib/vstk’},
# ],
### http://www.avast.com/
# [‘avast! Antivirus’, [‘/usr/bin/avastcmd’,’avastcmd’],
# ‘-a -i -n -t=A {}’, [0], [1], qr/\binfected by:\s+([^ \t\n\[\]]+)/m ],
### http://www.ikarus-software.com/
# [‘Ikarus AntiVirus for Linux’, ‘ikarus’,
# ‘{}’, [0], [40], qr/Signature (.+) found/m ],
### http://www.bitdefender.com/
# [‘BitDefender’, ‘bdscan’, # new version
# ‘–action=ignore –no-list {}’, qr/^Infected files\s*:\s*0+(?!\d)/m,
# qr/^(?:Infected files|Identified viruses|Suspect files)\s*:\s*0*[1-9]/m,
# qr/(?:suspected|infected)\s*:\s*(.*)(?:\033|$)/m ],
### http://www.bitdefender.com/
# [‘BitDefender’, ‘bdc’, # old version
# ‘–arc –mail {}’, qr/^Infected files *:0+(?!\d)/m,
# qr/^(?:Infected files|Identified viruses|Suspect files) *:0*[1-9]/m,
# qr/(?:suspected|infected): (.*)(?:\033|$)/m ],
# consider also: –all –nowarn –alev=15 –flev=15. The –all argument may
# not apply to your version of bdc, check documentation and see ‘bdc –help’
### ArcaVir for Linux and Unix http://www.arcabit.pl/
# [‘ArcaVir for Linux’, [‘arcacmd’,’arcacmd.static’],
# ‘-v 1 -summary 0 -s {}’, [0], [1,2],
# qr/(?:VIR|WIR):[ \t]*(.+)/m ],
# ### a generic SMTP-client interface to a SMTP-based virus scanner
# [‘av_smtp’, \&ask_av_smtp,
# [‘{}’, ‘smtp:[127.0.0.1]:5525’, ‘dummy@localhost’],
# qr/^2/, qr/^5/, qr/^\s*(.*?)\s*$/m ],
# [‘File::Scan’, sub {Amavis::AV::ask_av(sub{
# use File::Scan; my($fn)=@_;
# my($f)=File::Scan->new(max_txt_size=>0, max_bin_size=>0);
# my($vname) = $f->scan($fn);
# $f->error ? (2,"Error: ".$f->error)
# : ($vname ne ”) ? (1,"$vname FOUND") : (0,"Clean")}, @_) },
# ["{}/*"], [0], [1], qr/^(.*) FOUND$/m ],
# ### fully-fledged checker for JPEG marker segments of invalid length
# [‘check-jpeg’,
# sub { use JpegTester (); Amavis::AV::ask_av(\&JpegTester::test_jpeg, @_) },
# ["{}/*"], undef, [1], qr/^(bad jpeg: .*)$/m ],
# # NOTE: place file JpegTester.pm somewhere where Perl can find it,
# # for example in /usr/local/lib/perl5/site_perl
);
@av_scanners_backup = (
### http://www.clamav.net/ – backs up clamd or Mail::ClamAV
[‘ClamAV-clamscan’, ‘clamscan’,
"–stdout –no-summary -r –tempdir=$TEMPBASE {}",
[0], qr/:.*\sFOUND$/m, qr/^.*?: (?!Infected Archive)(.*) FOUND$/m ],
### http://www.f-prot.com/ – backs up F-Prot Daemon, V6
# [‘F-PROT Antivirus for UNIX’, [‘fpscan’],
# ‘–report –mount –adware {}’, # consider: –applications -s 4 -u 3 -z 10
# [0,8,64], [1,2,3, 4+1,4+2,4+3, 8+1,8+2,8+3, 12+1,12+2,12+3],
# qr/^\[Found\s+[^\]]*\]\s+<([^ \t(>]*)/m ],
### http://www.f-prot.com/ – backs up F-Prot Daemon (old)
# [‘FRISK F-Prot Antivirus’, [‘f-prot’,’f-prot.sh’],
# ‘-dumb -archive -packed {}’, [0,8], [3,6], # or: [0], [3,6,8],
# qr/(?:Infection:|security risk named) (.+)|\s+contains\s+(.+)$/m ],
### http://www.trendmicro.com/ – backs up Trophie
# [‘Trend Micro FileScanner’, [‘/etc/iscan/vscan’,’vscan’],
# ‘-za -a {}’, [0], qr/Found virus/m, qr/Found virus (.+) in/m ],
### http://www.sald.com/, http://drweb.imshop.de/ – backs up DrWebD
# [‘drweb – DrWeb Antivirus’, # security LHA hole in Dr.Web 4.33 and earlier
# [‘/usr/local/drweb/drweb’, ‘/opt/drweb/drweb’, ‘drweb’],
# ‘-path={} -al -go -ot -cn -upn -ok-‘,
# [0,32], [1,9,33], qr’ infected (?:with|by)(?: virus)? (.*)$’m ],
### http://www.kaspersky.com/
# [‘Kaspersky Antivirus v5.5’,
# [‘/opt/kaspersky/kav4fs/bin/kav4fs-kavscanner’,
# ‘/opt/kav/5.5/kav4unix/bin/kavscanner’,
# ‘/opt/kav/5.5/kav4mailservers/bin/kavscanner’, ‘kavscanner’],
# ‘-i0 -xn -xp -mn -R -ePASBME {}/*’, [0,10,15], [5,20,21,25],
# qr/(?:INFECTED|WARNING|SUSPICION|SUSPICIOUS) (.*)/m,
# sub {chdir(‘/opt/kav/bin’) or die "Can’t chdir to kav: $!"},
# sub {chdir($TEMPBASE) or die "Can’t chdir back to $TEMPBASE $!"},
# ],
# Commented out because the name ‘sweep’ clashes with Debian and FreeBSD
# package/port of an audio editor. Make sure the correct ‘sweep’ is found
# in the path when enabling.
#
# ### http://www.sophos.com/ – backs up Sophie or SAVI-Perl
# [‘Sophos Anti Virus (sweep)’, ‘sweep’,
# ‘-nb -f -all -rec -ss -sc -archive -cab -mime -oe -tnef ‘.
# ‘–no-reset-atime {}’,
# [0,2], qr/Virus .*? found/m,
# qr/^>>> Virus(?: fragment)? ‘?(.*?)’? found/m,
# ],
# # other options to consider: -idedir=/usr/local/sav
# Always succeeds and considers mail clean.
# Potentially useful when all other scanners fail and it is desirable
# to let mail continue to flow with no virus checking (when uncommented).
# [‘always-clean’, sub {0}],
);
1; # insure a defined return value