Erinevus lehekülje "Postfix" redaktsioonide vahel

Allikas: Kuutõrvaja
 
(ei näidata 3 kasutaja 118 vahepealset redaktsiooni)
1. rida: 1. rida:
Postfix
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===Sissejuhatus===
  
Postfix on vabavaraline mail transfre agent (MTA), serveritarkvara mis mõeldud
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Postfix on postiedastusagent (ingl. k. mail transport agent, MTA). Postiedastusagendi ülesanne on sooritada kontrolle, võtta epost vastu võrgust või lokaalselt ja anda edasi
emailide vastuvõtmiseks ning saatmiseks. Postfixi kiirus, kergelt administreeritavus ja turvalisus
 
on teinud sellest ühe enimkasutatava mta ja laialdase alternatiivi sendmailile.
 
  
Postfix on paljude operatsioonisüsteemide vaikimisi mta'ks, näiteks ubuntul.
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* 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
  
 
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                    internet (teised MTA'd)
Postfixi põhilisteks seadistusfailideks on main.cf ja master.cf. Main.cf sisaldab
 
postfixi seadistusparameetreid mis vajalikud mailide liigutamiseks ning master.cf seadistab deemonprotsesse
 
 
 
Kõige lihtsamaks main.cf seadistuseks oleks
 
 
 
smtpd_banner = $myhostname ESMTP no spam please ;)
 
 
 
myhostname = kool.edu.ee
 
mydomain = $myhostname
 
myorigin = $mydomain
 
 
 
inet_interfaces = all
 
mynetworks = 127.0.0.0/8, 192.168.1.0/24
 
 
 
mydestination = $myhostname, localhost.$mydomain, /usr/local/etc/postfix/mydestination
 
 
 
unknown_local_recipient_reject_code = 550
 
 
 
alias_maps = hash:/etc/mail/aliases
 
alias_database = hash:/etc/mail/aliases
 
 
 
home_mailbox = mbox
 
 
 
 
 
smtpd_sender_restrictions =
 
        permit_mynetworks,
 
        reject_unknown_sender_domain
 
 
 
smtpd_recipient_restrictions =
 
        permit_mynetworks,
 
        reject_unauth_destination
 
 
 
 
 
 
 
queue_directory = /var/spool/postfix
 
command_directory = /usr/local/sbin
 
daemon_directory = /usr/local/libexec/postfix
 
mail_owner = postfix
 
mail_spool_directory = /var/mail
 
debug_peer_level = 2
 
sendmail_path = /usr/local/sbin/sendmail
 
newaliases_path = /usr/local/bin/newaliases
 
mailq_path = /usr/local/bin/mailq
 
setgid_group = maildrop
 
html_directory = no
 
manpage_directory = /usr/local/man
 
sample_directory = /usr/local/etc/postfix
 
readme_directory = no
 
 
 
 
 
 
 
 
 
Mailiserverite võrdlused
 
 
 
http://en.wikipedia.org/wiki/Comparison_of_mail_servers
 
 
 
redhat'i postfixi põhjalikud manualid
 
 
 
http://www.redhat.com/support/resources/howto/RH-postfix-HOWTO/x368.html
 
 
 
postfixi arhidektuuri täpsem ülevaade
 
 
 
http://www.postfix.org/OVERVIEW.html
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
'''Serveritarkvara paigaldus'''
 
 
 
amavisd-new
 
 
 
clamav
 
 
 
Kogu süsteem toimib nii, et postfix annab kirja edasi amavisd'le, mis kontrollib seda kasutades amavisd'd ja smapsassassinit
 
 
 
 
 
'''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;
 
$final_spam_destiny      = D_DISCARD;
 
$final_bad_header_destiny = D_PASS;
 
 
  [qr/^/ => 1],  # true for everything else
 
));
 
 
@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$/ ],
 
 
    
 
    
);
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                            | ^
+
                            v |
@av_scanners_backup = (
+
                            _____
);
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  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
'''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 15:44

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