Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (CentOS 6.3 x86_64) - Page 4
This tutorial exists for these OS versions
- CentOS 6.3
- CentOS 6.2
- CentOS 6
- CentOS 5.3
- CentOS 5.1
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12 Install Amavisd-new, SpamAssassin And ClamAV
To install amavisd-new, spamassassin and clamav, run the following command:
yum install amavisd-new spamassassin clamav clamd unzip bzip2 unrar perl-DBD-mysql
Now we must edit /etc/amavisd/amavisd.conf.
vi /etc/amavisd/amavisd.conf
In this file we change five places:
1) Change
$mydomain = 'example.com'; # a convenient default for other settings |
to
$mydomain = 'localhost'; |
2) Change
$sa_tag_level_deflt = 2.0; # add spam info headers if at, or above that level |
to
$sa_tag_level_deflt = 2.0; # add spam info headers if at, or above that level |
(Of course, you can adjust the spam scores to your liking.)
3) Change
# @lookup_sql_dsn = |
to
# @lookup_sql_dsn = |
(Make sure you fill in the correct database details!)
4) Change
# $recipient_delimiter = '+'; # undef disables address extensions altogether |
to
$recipient_delimiter = undef; # undef disables address extensions altogether |
5) Change
$final_virus_destiny = D_DISCARD; |
to
$final_virus_destiny = D_REJECT; |
(Of course, it's up to you to decide what should happen with spam and viruses. I decide to accept spam (D_PASS) so that Spam can be filtered in my email client with a simple filter rule (based on the subject that gets rewritten by amavisd-new if it thinks a mail is spam). The allowed actions (D_PASS, D_DISCARD, D_BOUNCE, and D_REJECT) are explained here: http://www.ijs.si/software/amavisd/amavisd-new-docs.html#actions)
After my changes, /etc/amavisd/amavisd.conf looks like this:
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 # 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 $mydomain = 'localhost'; #$mydomain = 'example.com'; # a convenient default for other settings $MYHOME = '/var/spool/amavisd'; # 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 = undef; # -Q # $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 = "/var/run/amavisd/amavisd.lock"; # -L $pid_file = "/var/run/amavisd/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 $enable_dkim_signing = 1; # load DKIM signing code, keys defined by dkim_key @local_domains_maps = ( [".$mydomain"] ); # 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 = 4.0; # add 'spam detected' headers at that level $sa_kill_level_deflt = $sa_tag2_level_deflt; # triggers spam evasive actions (e.g. blocks mail) $sa_dsn_cutoff_level = 10; # spam level beyond which a DSN is not sent #$sa_tag_level_deflt = 2.0; # add spam info headers if at, or above that level #$sa_tag2_level_deflt = 6.2; # add 'spam detected' headers at that level #$sa_kill_level_deflt = 6.9; # triggers spam evasive actions (e.g. blocks mail) #$sa_dsn_cutoff_level = 10; # 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 @lookup_sql_dsn = ( ['DBI:mysql:database=mail;host=127.0.0.1;port=3306', 'mail_admin', 'mail_admin_password'] ); $sql_select_policy = 'SELECT "Y" as local FROM domains WHERE CONCAT("@",domain) IN (%k)'; $sql_select_white_black_list = undef; # undef disables SQL white/blacklisting $recipient_delimiter = '+'; # (default is '+') $replace_existing_extension = 1; # (default is false) $localpart_is_case_sensitive = 0; # (default is false) # $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 = undef; # notifications recip. $mailfrom_notify_admin = undef; # notifications sender $mailfrom_notify_recip = undef; # notifications sender $mailfrom_notify_spamadmin = undef; # notifications sender $mailfrom_to_quarantine = ''; # null return path; uses original sender if undef @addr_extension_virus_maps = ('virus'); @addr_extension_banned_maps = ('banned'); @addr_extension_spam_maps = ('spam'); @addr_extension_bad_header_maps = ('badh'); $recipient_delimiter = undef; # undef disables address extensions altogether # $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 = 'host.example.com'; # must be a fully-qualified domain name! # $notify_method = 'smtp:[127.0.0.1]:10025'; # $forward_method = 'smtp:[127.0.0.1]:10025'; # set to undef with milter! $final_virus_destiny = D_REJECT; $final_banned_destiny = D_REJECT; $final_spam_destiny = D_PASS; $final_bad_header_destiny = D_PASS; #$final_virus_destiny = D_DISCARD; #$final_banned_destiny = D_BOUNCE; #$final_spam_destiny = D_DISCARD; #$final_bad_header_destiny = D_BOUNCE; # $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) # '[email protected]' => [{'[email protected]' => 10.0}], # '[email protected]' => [{'.ebay.com' => -3.0}], # '[email protected]' => [{'[email protected]' => -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) '[email protected]' => -3.0, '[email protected]' => -3.0, '[email protected]' => -3.0, '[email protected]' => -3.0, 'securityfocus.com' => -3.0, '[email protected]' => -3.0, '[email protected]' => -3.0, '[email protected]' => -3.0, '[email protected]'=> -3.0, '[email protected]' => -3.0, 'spamassassin.apache.org' => -3.0, '[email protected]' => -3.0, '[email protected]' => -3.0, '[email protected]' => -3.0, '[email protected]' => -3.0, '[email protected]' => -3.0, '[email protected]' => -3.0, '[email protected]' => -3.0, '[email protected]' => -3.0, '[email protected]' => -3.0, '[email protected]' => -3.0, '[email protected]' => -3.0, '[email protected]' => -3.0, '[email protected]' => -3.0, '[email protected]' => -3.0, '[email protected]' => -5.0, '[email protected]' => -3.0, 'returns.groups.yahoo.com' => -3.0, '[email protected]' => -3.0, lc('[email protected]') => -3.0, lc('[email protected]') => -5.0, # soft-blacklisting (positive score) '[email protected]' => 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]* $/m ], # ### http://www.csupomona.edu/~henson/www/projects/SAVI-Perl/ # ['Sophos SAVI', \&sophos_savi ], # ### http://www.clamav.net/ ['ClamAV-clamd', \&ask_daemon, ["CONTSCAN {}\n", "/var/spool/amavisd/clamd.sock"], qr/\bOK$/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/ 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 |
amavisd-new is the program that glues together Postfix and SpamAssassin/ClamAV. Postfix passes the mails to amavisd-new which then invokes SpamAssassin and ClamAV to scan the emails. Please have a look at the Spamassassin and ClamAV settings in /etc/amavisd/amavisd.conf. Of course, you can customize that file a lot more. Feel free to do so, and have a look at the explanations in the original /etc/amavisd/amavisd.conf file!
Now let's create the system startup links for ClamAV and amavisd-new, update ClamAV's virus signature database, and start both services:
chkconfig --levels 235 amavisd on
chkconfig --levels 235 clamd.amavisd on
/usr/bin/freshclam
/etc/init.d/amavisd start
/etc/init.d/clamd.amavisd start
Now we have to configure Postfix to pipe incoming email through amavisd-new:
postconf -e 'content_filter = amavis:[127.0.0.1]:10024'
postconf -e 'receive_override_options = no_address_mappings'
Afterwards append the following lines to /etc/postfix/master.cf:
vi /etc/postfix/master.cf
[...] |
and restart Postfix:
/etc/init.d/postfix restart