Postfix: erinevus redaktsioonide vahel

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'''Serveritarkvara paigaldus'''
===Sissejuhatus===


amavisd-new
Postfix on postiedastusagent (ingl. k. mail transport agent, MTA). Postiedastusagendi ülesanne on sooritada kontrolle, võtta epost vastu võrgust või lokaalselt ja anda edasi


clamav
* postijaotusagendile (ingl. k. mail delivery agent, MDA) kirjade kasutajate postkastidesse jaotamiseks või kopeerida ise failisüsteemi
* järgmisele postiedastusagendile
* viiruste ja spämmi analüüsi süsteemile


Kogu süsteem toimib nii, et postfix annab kirja edasi amavisd'le, mis kontrollib seda kasutades amavisd'd ja smapsassassinit
Postiedastusagent on epostisüsteemi keskne komponent, mis ühendab kokku kõik eposti liikumisega toimuvad tegevused


 
                    internet (teised MTA'd)
'''Seadistus postfix'''
 
main.cf
 
content_filter = amavis:[127.0.0.1]:10024
smtpd_sender_restrictions =
        reject_unknown_sender_domain,
        permit_mynetworks,
        reject_rbl_client bl.spamcop.net,
        reject_rbl_client relays.ordb.org,
        reject_rbl_client sbl-xbl.spamhaus.org
 
master.cf
 
localhost:10025 inet  n  -      n      -      -      smtpd
    -o content_filter=
    -o local_recipient_maps=
    -o relay_recipient_maps=
    -o myhostname=localhost.eenet.ee
    -o smtpd_helo_restrictions=
    -o smtpd_client_restrictions=
    -o smtpd_sender_restrictions=
    -o smtpd_recipient_restrictions=permit_mynetworks,reject
    -o mynetworks=127.0.0.0/8
#
amavis    unix  -      -      n      -      4      smtp
    -o smtp_data_done_timeout=1200
    -o smtp_send_xforward_command=yes
    -o disable_dns_lookups=yes
 
 
'''konfig amavisd'''
 
use strict;
$max_servers = 4;            # number of pre-forked children (2..15 is common)
$daemon_user  = 'vscan';    # (no default;  customary: vscan or amavis)
$daemon_group = 'vscan';    # (no default;  customary: vscan or amavis)
$mydomain = 'eenet.ee';  # a convenient default for other settings
$MYHOME  = '/var/amavis';  # a convenient default for other settings
$TEMPBASE = "$MYHOME/tmp";  # working directory, needs to be created manually
$ENV{TMPDIR} = $TEMPBASE;    # environment variable TMPDIR
$QUARANTINEDIR = '/var/virusmails';
@local_domains_maps = ( [".$mydomain"] );
$log_level = 2;              # verbosity 0..5
$log_recip_templ = undef;    # disable by-recipient level-0 log entries
$DO_SYSLOG = 1;              # log via syslogd (preferred)
$SYSLOG_LEVEL = 'mail.debug';
$enable_db = 1;              # enable use of BerkeleyDB/libdb (SNMP and nanny)
$enable_global_cache = 1;    # enable use of libdb-based cache if $enable_db=1
$inet_socket_port = 10024;  # listen on this local TCP port(s) (see $protocol)
$sa_tag_level_deflt  = undef;  # add spam info headers if at, or above that level
$sa_tag2_level_deflt = 5.0; # add 'spam detected' headers at that level
$sa_kill_level_deflt = 7.0; # triggers spam evasive actions
$sa_dsn_cutoff_level = 9;    # spam level beyond which a DSN is not sent
$sa_quarantine_cutoff_level = 20;  # spam level beyond which quarantine is off
$sa_mail_body_size_limit = 200*1024; # don't waste time on SA if mail is larger
$sa_local_tests_only = 0;    # only tests which do not require internet access?
$sa_auto_whitelist = 1;      # turn on AWL in SA 2.63 or older (irrelevant
$virus_admin              = undef;  # notifications recip.
$mailfrom_notify_admin    = "virusalert\@$mydomain";  # notifications sender
$mailfrom_notify_recip    = "virusalert\@$mydomain";  # notifications sender
$mailfrom_notify_spamadmin = "spam.police\@$mydomain"; # notifications sender
$mailfrom_to_quarantine = ''; # null return path; uses original sender if undef
@addr_extension_virus_maps      = ('virus');
@addr_extension_spam_maps      = ('spam');
@addr_extension_banned_maps    = ('banned');
@addr_extension_bad_header_maps = ('badh');
$path = '/usr/local/sbin:/usr/local/bin:/usr/sbin:/sbin:/usr/bin:/bin';
$MAXLEVELS = 14;
$MAXFILES = 1500;
$MIN_EXPANSION_QUOTA =      100*1024;  # bytes  (default undef, not enforced)
$MAX_EXPANSION_QUOTA = 300*1024*1024;  # bytes  (default undef, not enforced)
$sa_spam_subject_tag = '***SPAM*** ';
$defang_virus  = 1;  # MIME-wrap passed infected mail
$defang_banned = 1;  # MIME-wrap passed mail containing banned name
    
    
$final_virus_destiny      = D_DISCARD;
                            | ^
$final_banned_destiny    = D_DISCARD;
                            v |
$final_spam_destiny      = D_DISCARD;
                            _____
$final_bad_header_destiny = D_PASS;
   spämmi ja        <---->  |     | <---- lokaalne meilisaatja (nn /usr/sbin/sendmail STDIO)
   viiruste analüüs        | MTA | <---- MTA klient, nt Icedove või Thunderbird
  [qr/^/ => 1],  # true for everything else
                          |_____| ----> postijaotusagent nt Cyrus või lihtsamal juhul kopeeritakse
));
                                        kiri faili /var/mail/kasutajanimilinefail
@keep_decoded_original_maps = (new_RE(
  qr'^MAIL-UNDECIPHERABLE$', # recheck full mail if it contains undecipherables
  qr'^(ASCII(?! cpio)|text|uuencoded|xxencoded|binhex)'i,
));
$banned_filename_re = new_RE(
   # block certain double extensions anywhere in the base name
  qr'\.[^./]*[A-Za-z][^./]*\.(exe|vbs|pif|scr|bat|cmd|com|cpl|dll)\.?$'i,
  qr'^application/x-msdownload$'i,                  # block these MIME types
  qr'^application/x-msdos-program$'i,
  qr'^application/hta$'i,
  [ qr'^\.(rpm|cpio|tar)$'      => 0 ], # allow any in Unix-type archives
  qr'.\.(exe|vbs|pif|scr|bat|cmd|com|cpl)$'i, # banned extension - basic
  qr'^\.(exe-ms)$',                      # banned file(1) types
);
@score_sender_maps = ({ # a by-recipient hash lookup table,
                        # results from all matching recipient tables are summed
  '.' => [  # the _first_ matching sender determines the score boost
  new_RE(  # regexp-type lookup table, just happens to be all soft-blacklist
    [qr'^(bulkmail|offers|cheapbenefits|earnmoney|foryou)@'i        => 5.0],
    [qr'^(greatcasino|investments|lose_weight_today|market\.alert)@'i=> 5.0],
    [qr'^(money2you|MyGreenCard|new\.tld\.registry|opt-out|opt-in)@'i=> 5.0],
    [qr'^(optin|saveonlsmoking2002k|specialoffer|specialoffers)@'i   => 5.0],
    [qr'^(stockalert|stopsnoring|wantsome|workathome|yesitsfree)@'i  => 5.0],
    [qr'^(your_friend|greatoffers)@'i                                => 5.0],
    [qr'^(inkjetplanet|marketopt|MakeMoney)\d*@'i                    => 5.0],
  ),
  { # a hash-type lookup table (associative array)
    'pac@c-s.fr'                            => -3.0,
    'nobody@cert.org'                        => -3.0,
    'cert-advisory@us-cert.gov'              => -3.0,
    'owner-alert@iss.net'                    => -3.0,
    'slashdot@slashdot.org'                  => -3.0,
    'bugtraq@securityfocus.com'              => -3.0,
    'ntbugtraq@listserv.ntbugtraq.com'      => -3.0,
    'security-alerts@linuxsecurity.com'      => -3.0,
    'mailman-announce-admin@python.org'      => -3.0,
    'amavis-user-admin@lists.sourceforge.net'=> -3.0,
    'notification-return@lists.sophos.com'  => -3.0,
    'owner-postfix-users@postfix.org'        => -3.0,
    'owner-postfix-announce@postfix.org'    => -3.0,
    'owner-sendmail-announce@lists.sendmail.org'  => -3.0,
    'sendmail-announce-request@lists.sendmail.org' => -3.0,
    'donotreply@sendmail.org'                => -3.0,
    'ca+envelope@sendmail.org'              => -3.0,
    'noreply@freshmeat.net'                  => -3.0,
    'owner-technews@postel.acm.org'          => -3.0,
    'ietf-123-owner@loki.ietf.org'          => -3.0,
    'cvs-commits-list-admin@gnome.org'      => -3.0,
    'rt-users-admin@lists.fsck.com'          => -3.0,
    'clp-request@comp.nus.edu.sg'            => -3.0,
    'surveys-errors@lists.nua.ie'            => -3.0,
    'emailnews@genomeweb.com'                => -5.0,
    'yahoo-dev-null@yahoo-inc.com'          => -3.0,
    'returns.groups.yahoo.com'              => -3.0,
    'clusternews@linuxnetworx.com'          => -3.0,
    lc('lvs-users-admin@LinuxVirtualServer.org')    => -3.0,
    lc('owner-textbreakingnews@CNNIMAIL12.CNN.COM') => -5.0,
    # soft-blacklisting (positive score)
    'sender@example.net'                    =>  3.0,
    '.example.net'                          =>  1.0,
  },
  ],  # end of site-wide tables
});
@decoders = (
  ['mail', \&do_mime_decode],
  ['asc',  \&do_ascii],
  ['uue',  \&do_ascii],
  ['hqx',  \&do_ascii],
  ['ync',  \&do_ascii],
  ['F',    \&do_uncompress, ['unfreeze','freeze -d','melt','fcat'] ],
  ['Z',    \&do_uncompress, ['uncompress','gzip -d','zcat'] ],
  ['gz',  \&do_gunzip],
  ['gz',  \&do_uncompress,  'gzip -d'],
  ['bz2',  \&do_uncompress,  'bzip2 -d'],
  ['lzo',  \&do_uncompress,  'lzop -d'],
  ['rpm',  \&do_uncompress, ['rpm2cpio.pl','rpm2cpio'] ],
  ['cpio', \&do_pax_cpio,  ['pax','gcpio','cpio'] ],
  ['tar',  \&do_pax_cpio,  ['pax','gcpio','cpio'] ],
  ['tar',  \&do_tar],
  ['deb',  \&do_ar,          'ar'],
  ['zip',  \&do_unzip],
  ['rar',  \&do_unrar,      ['rar','unrar'] ],
  ['arj',  \&do_unarj,      ['arj','unarj'] ],
  ['arc',  \&do_arc,        ['nomarch','arc'] ],
  ['zoo',  \&do_zoo,        'zoo'],
  ['lha',  \&do_lha,        'lha'],
  ['cab',  \&do_cabextract,  'cabextract'],
  ['tnef', \&do_tnef],
  ['exe',  \&do_executable, ['rar','unrar'], 'lha', ['arj','unarj'] ],
);
@av_scanners = (
### http://www.clamav.net/
['ClamAV-clamd',
  \&ask_daemon, ["CONTSCAN {}\n", "/var/run/clamav/clamd"],
  qr/\bOK$/, qr/\bFOUND$/,
  qr/^.*?: (?!Infected Archive)(.*) FOUND$/ ],
 
);
@av_scanners_backup = (
);
 
 
 
'''Automaatne start'''
 
amavisd_enable="YES"
clamav_clamd_enable="YES"
clamav_freshclam_enable="YES"
 
'''Spamitõrje uuendus'''
 
sa-update -D
 
spamassassin --lint && /usr/local/etc/rc.d/spamd.sh.sample restart
--lint kontrollib ega reeglites kala pole
 


'''Kontroll töötamisel'''
Kuutõrvajas on käsitletud seoses Postfixi kasutamisega selliseid teemasid


Heidame pilgu maillog faili, kõigi kirjadekohta peaks tekkima rida
* [[:Mailman kasutamine FreeBSD'ga]]
* [[:Cyrus kasutamine Gentooga]]
* [[:Postfix'i kasutamine Debianiga]]
* [[:Postfix'i arhitektuuri kirjeldus ja kasutamise keerulisemad võimalused]]
* [[:Kahetasemelise Postfix'i süsteemi kasutamine Debianiga]]
* [[:Cyruse kasutamine Postfixi ja Debianiga]]
* [[:Mailmani kasutamine Postfixi ja Debianiga]]
* [[:Sympa kasutamine Postfixi ja Debianiga]]
* [[:Amavis kasutamine Debian Lenniga]]
* [[:Postfix'i SMTP AUTH üle TLS vastu Postgresql baasi Debianiga]]
* [[:Opportunistic encryption kasutamine Postfixiga]]
* [[:Squirrelmail kasutamine Debian Lennyga]]
* [[Postfix + courier + mysql]] FreeBSD postfix mailisüsteem koos mysql'is olevate kasutajate ning veebihaldusliidesega paigaldusõpetus
* [[:SPF kasutamine Postfixiga]]

Viimane redaktsioon: 23. september 2010, kell 12:44

Sissejuhatus

Postfix on postiedastusagent (ingl. k. mail transport agent, MTA). Postiedastusagendi ülesanne on sooritada kontrolle, võtta epost vastu võrgust või lokaalselt ja anda edasi

  • postijaotusagendile (ingl. k. mail delivery agent, MDA) kirjade kasutajate postkastidesse jaotamiseks või kopeerida ise failisüsteemi
  • järgmisele postiedastusagendile
  • viiruste ja spämmi analüüsi süsteemile

Postiedastusagent on epostisüsteemi keskne komponent, mis ühendab kokku kõik eposti liikumisega toimuvad tegevused

                   internet (teised MTA'd)
 
                            | ^
                            v |
                           _____
 spämmi ja        <---->  |     | <---- lokaalne meilisaatja (nn /usr/sbin/sendmail STDIO)
 viiruste analüüs         | MTA | <---- MTA klient, nt Icedove või Thunderbird
                          |_____| ----> postijaotusagent nt Cyrus või lihtsamal juhul kopeeritakse 
                                        kiri faili /var/mail/kasutajanimilinefail

Kuutõrvajas on käsitletud seoses Postfixi kasutamisega selliseid teemasid