1

Topic: Help with setting my DKIM to sign email from all virtual domains

==== Required information ====
- iRedMail version: 0.8.4
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Linux/BSD distribution name and version: CentOS v6.4 64-bit edition
- Related log if you're reporting an issue:
====

I found an older post talking about this and I made the suggested changes:

1.> added all of my domains to the @local_domains_maps list.
2.> made the one default dkim_key line look like this:
          dkim_key(".", "dkim", "/var/lib/dkim/<my domain>.pem");

My server is still only singing emails with DKIM for the primary local domain. What else am I missing to make DKIM work as a catch-all?

2

Re: Help with setting my DKIM to sign email from all virtual domains

Did you update "@dkim_signature_options_bysender_maps =" parameter in Amavisd config file?

3

Re: Help with setting my DKIM to sign email from all virtual domains

yes i did. it was setup as i thought it should be for a catch all but still wasn't working.

no matter. i consider this solved.

i created individual keys for each domain and spec'd each one individually in the config file and now it is properly signing each domain's email with its own key so I'm satisfied.

4

Re: Help with setting my DKIM to sign email from all virtual domains

It's better to paste amavisd.conf here, so that we can check detailed settings.

5

Re: Help with setting my DKIM to sign email from all virtual domains

here you are:

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/amav … -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 = 10;            # num of pre-forked children (2..30 is common), -m
$daemon_user  = '<user>';     # (no default;  customary: , -u
$daemon_group = '<group>';     # (no default;  customary: ), -g

$mydomain = "<domain>";    # = '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 = "/var/spool/amavisd/quarantine";
# $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","<domain>".........] );  # list of all local domains

@mynetworks = qw( 127.0.0.0/8 [::1]  );

$unix_socketname = "$MYHOME/amavisd.sock";  # amavisd-release or amavis-milter
               # option(s) -p overrides $inet_socket_port and $unix_socketname

$inet_socket_port = [<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
  allow_disclaimers => 1, # enables disclaimer insertion if available
};

# 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{'<port>'} = 'ORIGINATING';

$policy_bank{'ORIGINATING'} = {  # mail supposedly originating from our users
  originating => 1,  # declare that mail was submitted by our smtp client
  allow_disclaimers => 1,  # enables disclaimer insertion if available
  # notify administrator of locally originating malware
  virus_admin_maps => ["root\@$mydomain"],
  spam_admin_maps  => ["root\@$mydomain"],
  warnbadhsender   => 1,
  # forward to a smtpd service providing DKIM signing service
  forward_method => 'smtp:[127.0.0.1]:<port>',
  # 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  = -999;  # 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

# $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 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 = 0;  # 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!

#$final_virus_destiny      = D_DISCARD;
#$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|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'^(?!cid:).*\.[^./]*[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.as … 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'] ],
);
$sa_debug = 0;
# Set hostname.
$myhostname = "<domain>";

# Set listen IP/PORT.
$notify_method  = 'smtp:[127.0.0.1]:<port>';
$forward_method = 'smtp:[127.0.0.1]:<port>';

# Set default action.
# Available actions: D_PASS, D_BOUNCE, D_REJECT, D_DISCARD.
$final_virus_destiny      = D_DISCARD;
$final_banned_destiny     = D_PASS;
$final_spam_destiny       = D_PASS;
$final_bad_header_destiny = D_PASS;

@av_scanners = (

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

@av_scanners_backup = (

    ### http://www.clamav.net/   - backs up clamd or Mail::ClamAV
    ['ClamAV-clamscan', 'clamscan',
    "--stdout --disable-summary -r --tempdir=$TEMPBASE {}", [0], [1],
    qr/^.*?: (?!Infected Archive)(.*) FOUND$/ ],
);

# This policy will perform virus checks only.
#$interface_policy{'10026'} = 'VIRUSONLY';
#$policy_bank{'VIRUSONLY'} = { # mail from the pickup daemon
#    bypass_spam_checks_maps   => [1],  # don't spam-check this mail
#    bypass_banned_checks_maps => [1],  # don't banned-check this mail
#    bypass_header_checks_maps => [1],  # don't header-check this mail
#};

# Allow SASL authenticated users to bypass scanning. Typically SASL
# users already submit messages to the submission port (587) or the
# smtps port (465):
#$interface_policy{'10026'} = 'SASLBYPASS';
#$policy_bank{'SASLBYPASS'} = {  # mail from submission and smtps ports
#    bypass_spam_checks_maps   => [1],  # don't spam-check this mail
#    bypass_banned_checks_maps => [1],  # don't banned-check this mail
#    bypass_header_checks_maps => [1],  # don't header-check this mail
#};

# Apply to mails which coming from internal networks or authenticated
# roaming users.
# mail supposedly originating from our users
$policy_bank{'MYUSERS'} = {
    # declare that mail was submitted by our smtp client
    originating => 1,

    # enables disclaimer insertion if available
    allow_disclaimers => 1,

    # notify administrator of locally originating malware
    virus_admin_maps => ["root\@$mydomain"],
    spam_admin_maps  => ["root\@$mydomain"],
    warnbadhsender   => 0,

    # 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'],

    # don't remove NOTIFY=SUCCESS option
    terminate_dsn_on_notify_success => 0,

    # don't perform spam/virus/header check.
    #bypass_spam_checks_maps => [1],
    #bypass_virus_checks_maps => [1],
    #bypass_header_checks_maps => [1],

    # allow sending any file names and types
    #bypass_banned_checks_maps => [1],
};

# regular incoming mail, originating from anywhere (usually from outside)
#$policy_bank{'EXT'} = {
#  # just use global settings, no special overrides
#};

#
# Port used to release quarantined mails.
#
$interface_policy{'9998'} = 'AM.PDP-INET';
$policy_bank{'AM.PDP-INET'} = {
    protocol => 'AM.PDP',       # select Amavis policy delegation protocol
    inet_acl => [qw( 127.0.0.1 [::1] )],    # restrict access to these IP addresses
    auth_required_release => 1,    # 0 - don't require secret_id for amavisd-release
    #log_level => 4,
    #always_bcc_by_ccat => {CC_CLEAN, 'admin@example.com'},
};

#########################
# Quarantine mails.
#

# Don't quarantine mails with bad header.
$bad_header_quarantine_method = undef;

# Quarantine SPAM.
#$spam_quarantine_to = 'spam-quarantine';

# Quarantine method. How to store mail body.
#   - 'local:spam-%i-%m', quarantine mail on local file system.
#   - 'sql:', quarantine mail in SQL server specified in @storage_sql_dsn.
#   - undef, do not quarantine mail.
#$spam_quarantine_method = 'sql:';
$spam_quarantine_method = undef;

#########################
# Quarantine VIRUS mails.
#
#$virus_quarantine_to     = 'virus-quarantine';
#$virus_quarantine_method = 'sql:';

#########################
# Quarantine BANNED mails.
#
$banned_files_quarantine_method = undef;
# Or quarantine banned mail to SQL server.
#$banned_files_quarantine_method = 'sql:';
#$banned_quarantine_to = 'banned-quarantine';


# Modify email subject, add '$sa_spam_subject_tag'.
#   0:  disable
#   1:  enable
$sa_spam_modifies_subj = 1;

# remove existing headers
#$remove_existing_x_scanned_headers= 0;
#$remove_existing_spam_headers = 0;

# Leave empty (undef) to add no header.
# Modify /usr/sbin/amavisd or /usr/sbin/amavisd-new file to add customize header in:
#
#   sub add_forwarding_header_edits_per_recip
#
#$X_HEADER_TAG = 'X-Virus-Scanned';
#$X_HEADER_LINE = "by amavisd at $myhostname";

# Notify virus sender?
#$warnvirussender = 0;

# Notify spam sender?
#$warnspamsender = 0;

# Notify sender of banned files?
$warnbannedsender = 0;

# Notify sender of syntactically invalid header containing non-ASCII characters?
$warnbadhsender = 0;

# Notify virus (or banned files) RECIPIENT?
#  (not very useful, but some policies demand it)
$warnvirusrecip = 0;
$warnbannedrecip = 0;

# Notify also non-local virus/banned recipients if $warn*recip is true?
#  (including those not matching local_domains*)
$warn_offsite = 0;

#$notify_sender_templ      = read_text('/var/amavis/notify_sender.txt');
#$notify_virus_sender_templ= read_text('/var/amavis/notify_virus_sender.txt');
#$notify_virus_admin_templ = read_text('/var/amavis/notify_virus_admin.txt');
#$notify_virus_recips_templ= read_text('/var/amavis/notify_virus_recips.txt');
#$notify_spam_sender_templ = read_text('/var/amavis/notify_spam_sender.txt');
#$notify_spam_admin_templ  = read_text('/var/amavis/notify_spam_admin.txt');

$sql_allow_8bit_address = 1;
$timestamp_fmt_mysql = 1;

# a string to prepend to Subject (for local recipients only) if mail could
# not be decoded or checked entirely, e.g. due to password-protected archives
#$undecipherable_subject_tag = '***UNCHECKED*** ';  # undef disables it
$undecipherable_subject_tag = undef;
# Hope to fix 'nested MAIL command' issue on high load server.
$smtp_connection_cache_enable = 0;

# The default set of header fields to be signed can be controlled
# by setting %signed_header_fields elements to true (to sign) or
# to false (not to sign). Keys must be in lowercase, e.g.:
# 0 -> off
# 1 -> on
$signed_header_fields{'received'} = 0;
$signed_header_fields{'to'} = 1;

# Make sure it sings all inbound mails, avoid error log like this:
# 'dkim: not signing inbound mail'.
$originating = 1;

# Add dkim_key here.
dkim_key("<domain>", "dkim", "/var/lib/dkim/<domain>.pem");
<repeated x times, one for each domain>

# Note that signing mail for subdomains with a key of a parent
# domain is treated by recipients as a third-party key, which
# may 'hold less merit' in their eyes. If one has a choice,
# it is better to publish a key for each domain (e.g. host1.a.cn)
# if mail is really coming from it. Sharing a pem file
# for multiple domains may be acceptable, so you don't need
# to generate a different key for each subdomain, but you
# do need to publish it in each subdomain. It is probably
# easier to avoid sending addresses like host1.a.cn and
# always use a parent domain (a.cn) in 'From:', thus
# avoiding the issue altogether.

# Add new dkim_key for other domain.
#dkim_key('Your_New_Domain_Name', 'dkim', 'Your_New_Pem_File');

@dkim_signature_options_bysender_maps = ( {
    # ------------------------------------
    # For domain: <domain>.
    # ------------------------------------
    # 'd' defaults to a domain of an author/sender address,
    # 's' defaults to whatever selector is offered by a matching key

    #'postmaster@<domain>' => { d => "<domain>", a => 'rsa-sha256', ttl =>  7*24*3600 },
    #"spam-reporter@<domain>"    => { d => "<domain>", a => 'rsa-sha256', ttl =>  7*24*3600 },

    # explicit 'd' forces a third-party signature on foreign (hosted) domains

<repeated x times for each domain i host>


    # ---- End domain: <domain>----

    # catchall defaults
    '.' => { a => 'rsa-sha256', c => 'relaxed/simple', ttl => 30*24*3600 },
} );
# ------------ Disclaimer Setting ---------------
# Uncomment this line to enable singing disclaimer in outgoing mails.
#$defang_maps_by_ccat{+CC_CATCHALL} = [ 'disclaimer' ];

# Program used to signing disclaimer in outgoing mails.
$altermime = '/usr/bin/altermime';

# Disclaimer in plain text formart.
@altermime_args_disclaimer = qw(--disclaimer=/etc/postfix/disclaimer/_OPTION_.txt --disclaimer-html=/etc/postfix/disclaimer/_OPTION_.txt --force-for-bad-html);

@disclaimer_options_bysender_maps = ({
    # Per-domain disclaimer setting: /etc/postfix/disclaimer/host1.iredmail.org.txt
    #'host1.iredmail.org' => 'host1.iredmail.org',

    # Sub-domain disclaimer setting: /etc/postfix/disclaimer/iredmail.org.txt
    #'.iredmail.org'      => 'iredmail.org',

    # Per-user disclaimer setting: /etc/postfix/disclaimer/boss.iredmail.org.txt
    #'boss@iredmail.org'  => 'boss.iredmail.org',

    # Catch-all disclaimer setting: /etc/postfix/disclaimer/default.txt
    '.' => 'default',
},);
# ------------ End Disclaimer Setting ---------------
@storage_sql_dsn = (
    ['DBI:mysql:database=<name>;host=127.0.0.1;port=<port>', '', ''],
);
# Uncomment below two lines to lookup virtual mail domains from MySQL database.
<omitted>
#);
# For Amavisd-new-2.7.0 and later versions. Placeholder '%d' is available in Amavisd-2.7.0+.
#$sql_select_policy = "SELECT domain FROM domain WHERE domain='%d'";

# For Amavisd-new-2.6.x.
# WARNING: IN() may cause MySQL lookup performance issue.
#$sql_select_policy = "SELECT domain FROM domain WHERE CONCAT('@', domain) IN (%k)";

1;  # insure a defined return