{"id":53013,"date":"2019-11-21T00:00:00","date_gmt":"2019-11-20T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/zimbra-i-zashhita-ot-spama"},"modified":"2020-02-18T14:00:51","modified_gmt":"2020-02-18T11:00:51","slug":"zimbra-i-zashhita-ot-spama","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/administrirovanie\/zimbra-i-zashhita-ot-spama","title":{"rendered":"Zimbra a ochrana proti spamu","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Jedn\u00edm z kl\u00ed\u010dov\u00fdch \u00fakol\u016f, kter\u00e9 stoj\u00ed p\u0159ed administr\u00e1torem vlastn\u00edho po\u0161tovn\u00edho serveru ve firm\u011b, je filtrov\u00e1n\u00ed zpr\u00e1v obsahuj\u00edc\u00edch spam. Po\u0161kozen\u00ed zp\u016fsoben\u00e1 spamem je zjevn\u00e9 a jasn\u00e9: krom\u011b hrozby pro informa\u010dn\u00ed bezpe\u010dnost firmy zab\u00edr\u00e1 m\u00edsto na pevn\u00e9m disku serveru a tak\u00e9 sni\u017euje efektivitu zam\u011bstnanc\u016f, kdy\u017e se dostane do 'Doru\u010den\u00e9 po\u0161ty'. Odd\u011blit nevy\u017e\u00e1danou reklamu od pracovn\u00ed korespondence nen\u00ed tak jednoduch\u00fd \u00fakol, jak se na prvn\u00ed pohled zd\u00e1. Faktem je, \u017ee neexistuje \u0159e\u0161en\u00ed, kter\u00e9 by zaru\u010dovalo stoprocentn\u00ed v\u00fdsledky p\u0159i odfiltrov\u00e1n\u00ed nevy\u017e\u00e1dan\u00fdch zpr\u00e1v, a \u0161patn\u011b nastaven\u00fd algoritmus pro rozpozn\u00e1v\u00e1n\u00ed nevy\u017e\u00e1dan\u00e9 po\u0161ty m\u016f\u017ee firm\u011b zp\u016fsobit mnohem v\u011bt\u0161\u00ed \u0161kody ne\u017e samotn\u00fd spam.<\/p>\n

\"Zimbra
\n<\/a><\/noindex>
\nV bal\u00edku Zimbra Collaboration Suite je ochrana proti spamu realizov\u00e1na pomoc\u00ed svobodn\u011b \u0161\u00ed\u0159en\u00e9ho softwarov\u00e9ho bal\u00edku Amavis, kter\u00fd implementuje SPF, DKIM a podporuje \u010dern\u00e9, b\u00edl\u00e9 a \u0161ed\u00e9 seznamy. Krom\u011b Amavis se v Zimb\u0159e pou\u017e\u00edv\u00e1 antivir ClamAV a spamov\u00fd filtr SpamAssassin. V sou\u010dasn\u00e9 dob\u011b je SpamAssassin optim\u00e1ln\u00edm \u0159e\u0161en\u00edm pro filtrov\u00e1n\u00ed spamu. Princip jeho fungov\u00e1n\u00ed spo\u010d\u00edv\u00e1 v tom, \u017ee ka\u017ed\u00e1 p\u0159\u00edchoz\u00ed zpr\u00e1va je kontrolov\u00e1na na shodu s regul\u00e1rn\u00edmi v\u00fdrazy, charakteristick\u00fdmi pro nevy\u017e\u00e1dan\u00e9 z\u00e1silky. Po ka\u017ed\u00e9m \u00fasp\u011b\u0161n\u00e9m ov\u011b\u0159en\u00ed p\u0159id\u011bluje SpamAssassin zpr\u00e1v\u011b ur\u010dit\u00e9 mno\u017estv\u00ed bod\u016f. \u010c\u00edm v\u00edce bod\u016f se na konci kontroly nahromad\u00ed, t\u00edm vy\u0161\u0161\u00ed je pravd\u011bpodobnost, \u017ee analyzovan\u00e1 zpr\u00e1va je spam.<\/p>\n

Takov\u00fd syst\u00e9m hodnocen\u00ed p\u0159\u00edchoz\u00edch zpr\u00e1v umo\u017e\u0148uje pom\u011brn\u011b flexibiln\u011b nastavit filtr. M\u016f\u017eete nap\u0159\u00edklad stanovit mno\u017estv\u00ed bod\u016f, p\u0159i kter\u00e9m bude zpr\u00e1va pova\u017eov\u00e1na za podez\u0159elou a p\u0159esunuta do slo\u017eky 'Spam', a m\u016f\u017eete tak\u00e9 nastavit mno\u017estv\u00ed bod\u016f, p\u0159i kter\u00e9m bude zpr\u00e1va bezn\u00e1vratn\u011b smaz\u00e1na. Nastaven\u00edm spamov\u00e9ho filtru t\u00edmto zp\u016fsobem m\u016f\u017eete vy\u0159e\u0161it dva probl\u00e9my: za prv\u00e9 se vyhnout zapln\u011bn\u00ed cenn\u00e9ho diskov\u00e9ho prostoru bezcenn\u00fdmi spamov\u00fdmi z\u00e1silkami a za druh\u00e9 maxim\u00e1ln\u011b sn\u00ed\u017eit po\u010det pracovn\u00edch zpr\u00e1v, kter\u00e9 budou p\u0159ehl\u00e9dnuty kv\u016fli \u010dinnosti spamov\u00e9ho filtru.<\/p>\n

\"Zimbra
\n
\nHlavn\u00edm probl\u00e9mem, kter\u00fd m\u016f\u017ee vzniknout u rusk\u00fdch u\u017eivatel\u016f Zimbra, je neochota vestav\u011bn\u00e9ho antispamov\u00e9ho syst\u00e9mu filtrovat rusk\u00fd spam hned od za\u010d\u00e1tku. D\u016fvodem je absence vestav\u011bn\u00fdch pravidel pro cyrilick\u00e9 texty. Z\u00e1padn\u00ed kolegov\u00e9 tuto ot\u00e1zku \u0159e\u0161\u00ed bezpodm\u00edne\u010dn\u00fdm odstran\u011bn\u00edm v\u0161ech e-mail\u016f v ru\u0161tin\u011b. A opravdu, st\u011b\u017e\u00ed by n\u011bkdo, kdo je p\u0159i smyslech, zkou\u0161el v\u00e9st obchodn\u00ed korespondenci s evropsk\u00fdmi spole\u010dnostmi v ru\u0161tin\u011b. Nicm\u00e9n\u011b u\u017eivatel\u00e9 z Ruska to nemohou ud\u011blat. \u010c\u00e1ste\u010dn\u011b m\u016f\u017ee tento probl\u00e9m vy\u0159e\u0161it p\u0159id\u00e1n\u00ed rusk\u00fdch pravidel pro Spamassassin<\/a><\/noindex>, nicm\u00e9n\u011b jejich aktu\u00e1lnost a spolehlivost nen\u00ed zaru\u010dena.<\/p>\n

D\u00edky \u0161irok\u00e9mu roz\u0161\u00ed\u0159en\u00ed a otev\u0159en\u00e9mu zdrojov\u00e9mu k\u00f3du, v Zimbra Collaboration Suite je mo\u017en\u00e9 integrovat i dal\u0161\u00ed, v\u010detn\u011b komer\u010dn\u00edch, \u0159e\u0161en\u00ed pro zaji\u0161t\u011bn\u00ed informa\u010dn\u00ed bezpe\u010dnosti. Nicm\u00e9n\u011b nejoptim\u00e1ln\u011bj\u0161\u00edm \u0159e\u0161en\u00edm m\u016f\u017ee b\u00fdt cloudov\u00fd syst\u00e9m ochrany p\u0159ed kybernetick\u00fdmi hrozbami. Nastaven\u00ed cloudov\u00e9 ochrany se obvykle prov\u00e1d\u00ed jak na stran\u011b poskytovatele slu\u017eby, tak na stran\u011b m\u00edstn\u00edho serveru. Podstata nastaven\u00ed spo\u010d\u00edv\u00e1 v tom, \u017ee m\u00edstn\u00ed adresa pro p\u0159\u00edchoz\u00ed po\u0161tu je nahrazena adresou cloudov\u00e9ho serveru, kde doch\u00e1z\u00ed k filtrov\u00e1n\u00ed e-mail\u016f, a teprve pot\u00e9, co pro\u0161ly v\u0161emi kontrolami, jsou e-maily zas\u00edl\u00e1ny na adresu podniku. <\/p>\n

Takov\u00fd syst\u00e9m se p\u0159ipojuje jednoduchou v\u00fdm\u011bnou IP adresy<\/a> POP3-serveru pro p\u0159\u00edchoz\u00ed po\u0161tu v MX z\u00e1znamech serveru na IP adresu va\u0161eho cloudov\u00e9ho \u0159e\u0161en\u00ed. Jin\u00fdmi slovy, pokud d\u0159\u00edve MX z\u00e1znam m\u00edstn\u00edho serveru vypadal zhruba takto:<\/p>\n

domain.com. IN MX 0 pop
\ndomain.com. IN MX 10 pop
\npop IN A 192.168.1.100<\/p><\/blockquote>\n

\nPak po v\u00fdm\u011bn\u011b IP adresy za tu, kterou poskytuje v\u00e1\u0161 poskytovatel cloudov\u00e9 bezpe\u010dnosti (p\u0159edpokl\u00e1dejme, \u017ee to bude 26.35.232.80), bude z\u00e1znam zm\u011bn\u011bn na n\u00e1sleduj\u00edc\u00ed:<\/p>\n

domain.com. IN MX 0 pop
\ndomain.com. IN MX 10 pop
\npop IN A 26.35.232.80<\/p><\/blockquote>\n

\nTak\u00e9 b\u011bhem nastaven\u00ed v osobn\u00edm kabinet\u011b cloudov\u00e9 platformy bude t\u0159eba uv\u00e9st adresu dom\u00e9ny, ze kter\u00e9 bude p\u0159ich\u00e1zet nefilterovan\u00e1 elektronick\u00e1 po\u0161ta, a adresu dom\u00e9ny, na kterou by m\u011bly b\u00fdt odes\u00edl\u00e1ny filtrov\u00e1n\u00ed e-maily. Po t\u011bchto kroc\u00edch bude filtrov\u00e1n\u00ed va\u0161\u00ed po\u0161ty prob\u00edhat na serverech t\u0159et\u00ed strany, kter\u00e1 ponese odpov\u011bdnost za bezpe\u010dnost p\u0159\u00edchoz\u00ed po\u0161ty v podniku.<\/p>\n

Zimbra Collaboration Suite je tedy ide\u00e1ln\u00ed volbou jak pro mal\u00e9 podniky, kter\u00e9 hledaj\u00ed co nejni\u017e\u0161\u00ed n\u00e1kladov\u00e9, ale bezpe\u010dn\u00e9 \u0159e\u0161en\u00ed pro e-mail, tak pro velk\u00e9 firmy, kter\u00e9 neust\u00e1le pracuj\u00ed na sni\u017eov\u00e1n\u00ed rizik spojen\u00fdch s kybernetick\u00fdmi hrozbami.<\/p>\n

Na v\u0161echny dotazy ohledn\u011b Zextras Suite se m\u016f\u017eete obr\u00e1tit na z\u00e1stupkyni spole\u010dnosti \u201eZextras\u201c Katerynu Triandafiliidi na e-mailu katerina@zextras.com
\n
Zdroj: habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041e\u0434\u043d\u043e\u0439 \u0438\u0437 \u043a\u043b\u044e\u0447\u0435\u0432\u044b\u0445 \u0437\u0430\u0434\u0430\u0447, \u0432\u0441\u0442\u0430\u044e\u0449\u0438\u0445 \u043f\u0435\u0440\u0435\u0434 \u0430\u0434\u043c\u0438\u043d\u0438\u0441\u0442\u0440\u0430\u0442\u043e\u0440\u043e\u043c \u0441\u043e\u0431\u0441\u0442\u0432\u0435\u043d\u043d\u043e\u0433\u043e \u043f\u043e\u0447\u0442\u043e\u0432\u043e\u0433\u043e \u0441\u0435\u0440\u0432\u0435\u0440\u0430 \u043d\u0430 \u043f\u0440\u0435\u0434\u043f\u0440\u0438\u044f\u0442\u0438\u0438, \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0444\u0438\u043b\u044c\u0442\u0440\u0430\u0446\u0438\u044f \u043f\u0438\u0441\u0435\u043c, \u0441\u043e\u0434\u0435\u0440\u0436\u0430\u0449\u0438\u0445 \u0441\u043f\u0430\u043c. \u0412\u0440\u0435\u0434 \u043e\u0442 \u0441\u043f\u0430\u043c\u0430 \u043e\u0447\u0435\u0432\u0438\u0434\u0435\u043d \u0438 \u043f\u043e\u043d\u044f\u0442\u0435\u043d: \u043f\u043e\u043c\u0438\u043c\u043e \u0443\u0433\u0440\u043e\u0437\u044b \u0434\u043b\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u043f\u0440\u0435\u0434\u043f\u0440\u0438\u044f\u0442\u0438\u044f, \u043e\u043d \u0437\u0430\u043d\u0438\u043c\u0430\u0435\u0442 \u043c\u0435\u0441\u0442\u043e \u043d\u0430 \u0436\u0435\u0441\u0442\u043a\u043e\u043c \u0434\u0438\u0441\u043a\u0435 \u0441\u0435\u0440\u0432\u0435\u0440\u0430, \u0430 \u0442\u0430\u043a\u0436\u0435 \u0441\u043d\u0438\u0436\u0430\u0435\u0442 \u044d\u0444\u0444\u0435\u043a\u0442\u0438\u0432\u043d\u043e\u0441\u0442\u044c \u0441\u043e\u0442\u0440\u0443\u0434\u043d\u0438\u043a\u043e\u0432 \u043f\u0440\u0438 \u043f\u043e\u043f\u0430\u0434\u0430\u043d\u0438\u0438 \u0432\u043e \u00ab\u0412\u0445\u043e\u0434\u044f\u0449\u0438\u0435 \u043f\u0438\u0441\u044c\u043c\u0430\u00bb. \u041e\u0442\u0434\u0435\u043b\u0438\u0442\u044c \u043d\u0435\u0436\u0435\u043b\u0430\u0442\u0435\u043b\u044c\u043d\u0443\u044e \u0440\u0430\u0441\u0441\u044b\u043b\u043a\u0443 \u043e\u0442 \u0434\u0435\u043b\u043e\u0432\u043e\u0439 \u043f\u0435\u0440\u0435\u043f\u0438\u0441\u043a\u0438 \u2014 \u043d\u0435 \u0442\u0430\u043a\u0430\u044f […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-53013","post","type-post","status-publish","format-standard","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Zimbra a ochrana proti spamu | ProHoster","description":"Jedn\u00edm z kl\u00ed\u010dov\u00fdch \u00fakol\u016f, kter\u00e9 stoj\u00ed p\u0159ed administr\u00e1torem vlastn\u00edho po\u0161tovn\u00edho serveru ve firm\u011b, je filtrov\u00e1n\u00ed e-mail\u016f obsahuj\u00edc\u00edch spam.","canonical_url":"https:\/\/prohoster.info\/cs\/blog\/administrirovanie\/zimbra-i-zashhita-ot-spama","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"cs_CZ","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47Zimbra \u0438 \u0437\u0430\u0449\u0438\u0442\u0430 \u043e\u0442 \u0441\u043f\u0430\u043c\u0430 | ProHoster","og:description":"\u041e\u0434\u043d\u043e\u0439 \u0438\u0437 \u043a\u043b\u044e\u0447\u0435\u0432\u044b\u0445 \u0437\u0430\u0434\u0430\u0447, \u0432\u0441\u0442\u0430\u044e\u0449\u0438\u0445 \u043f\u0435\u0440\u0435\u0434 \u0430\u0434\u043c\u0438\u043d\u0438\u0441\u0442\u0440\u0430\u0442\u043e\u0440\u043e\u043c \u0441\u043e\u0431\u0441\u0442\u0432\u0435\u043d\u043d\u043e\u0433\u043e \u043f\u043e\u0447\u0442\u043e\u0432\u043e\u0433\u043e \u0441\u0435\u0440\u0432\u0435\u0440\u0430 \u043d\u0430 \u043f\u0440\u0435\u0434\u043f\u0440\u0438\u044f\u0442\u0438\u0438, \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0444\u0438\u043b\u044c\u0442\u0440\u0430\u0446\u0438\u044f \u043f\u0438\u0441\u0435\u043c, \u0441\u043e\u0434\u0435\u0440\u0436\u0430\u0449\u0438\u0445 \u0441\u043f\u0430\u043c.","og:url":"https:\/\/prohoster.info\/cs\/blog\/administrirovanie\/zimbra-i-zashhita-ot-spama","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2019-11-20T21:00:00+00:00","article:modified_time":"2020-02-18T11:00:51+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"53013","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":null,"schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"seo_analyzer_scan_date":"2026-02-08 20:46:20","breadcrumb_settings":null,"limit_modified_date":false,"reviewed_by":null,"ai":null,"created":"2021-02-28 20:33:27","updated":"2026-02-08 20:46:20","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/posts\/53013","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/comments?post=53013"}],"version-history":[{"count":1,"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/posts\/53013\/revisions"}],"predecessor-version":[{"id":157848,"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/posts\/53013\/revisions\/157848"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/media?parent=53013"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/categories?post=53013"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/tags?post=53013"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}