{"id":4180,"date":"2020-10-30T21:40:26","date_gmt":"2020-10-30T20:40:26","guid":{"rendered":"https:\/\/webhosting.de\/?p=4180"},"modified":"2020-10-30T21:40:26","modified_gmt":"2020-10-30T20:40:26","slug":"bezspamowa-ochrona-antyspamowa-spamassin","status":"publish","type":"post","link":"https:\/\/webhosting.de\/pl\/spamassassin-der-kostenlose-anti-spamschutz\/","title":{"rendered":"Spamassin - bezp\u0142atna ochrona antyspamowa"},"content":{"rendered":"<p>Ka\u017cdego dnia wysy\u0142anych jest 28 miliard\u00f3w maili SPAM. Jest to du\u017ca cz\u0119\u015b\u0107 ca\u0142ego ruchu e-mailowego i prawie \u017cadne konto e-mailowe nie jest oszcz\u0119dzane od niechcianych maili reklamowych. Jak dot\u0105d jedynym sposobem ochrony skrzynki pocztowej przed nimi jest dobry i dzia\u0142aj\u0105cy filtr antyspamowy. SpamAssassin jest kolejnym takim filtrem antyspamowym, ale to przede wszystkim jego dos\u0142ownie r\u0119cznie dobierany algorytm i wysoka elastyczno\u015b\u0107 czyni\u0105 z niego bardzo specjalny element oprogramowania.<\/p>\n<h2>Kr\u00f3tki przegl\u0105d<\/h2>\n<p>Chocia\u017c nad oprogramowaniem pracuje obecnie ca\u0142y zesp\u00f3\u0142, kamie\u0144 w\u0119gielny pod SpamAssassin po\u0142o\u017cy\u0142 Justin Mason, kt\u00f3ry wcze\u015bniej by\u0142 odpowiedzialny za podobny program o nazwie filter.plx. W 2001 roku cz\u0119\u015bci programu zosta\u0142y zaadaptowane i przepisane oraz przemianowane na nowy projekt \"Spamassin\". Od 2004 roku nale\u017cy ona do Fundacji Oprogramowania Apache i jest kontynuowana jako oprogramowanie open source. Opr\u00f3cz open-source'owej natury programu, istnieje r\u00f3wnie\u017c licencja, kt\u00f3ra czyni go wolnym oprogramowaniem, kt\u00f3rego prywatne i komercyjne wykorzystanie, na przyk\u0142ad jako modu\u0142u innego p\u0142atnego oprogramowania, jest ca\u0142kowicie wolne.<\/p>\n<p>G\u0142\u00f3wn\u0105 zalet\u0105 programu jest jego du\u017ca elastyczno\u015b\u0107 w odniesieniu do poziomu wykorzystania, poniewa\u017c SpamAssassin mo\u017ce by\u0107 u\u017cywany zar\u00f3wno jako samodzielna aplikacja, jako podprogram (modu\u0142) innego oprogramowania, jako program kliencki demona pocztowego lub jako wywo\u0142anie MDA (Mail Delivery Agent) takiego jak Procmail. Wa\u017cne: Nawet je\u015bli w \u0142a\u0144cuchu dystrybucji znajduj\u0105 si\u0119 r\u00f3\u017cne instancje oprogramowania, flaga nie oznacza, \u017ce oprogramowanie nie b\u0119dzie u\u017cywane. <a href=\"https:\/\/webhosting.de\/pl\/e-mail-von-webhosting-account-trennen\/\">E-mail<\/a> analizowane dwukrotnie, co zapobiega redundancji proces\u00f3w i zmniejsza wykorzystanie zasob\u00f3w.<\/p>\n<h2>Tak w\u0142a\u015bnie dzia\u0142a proces sortowania<\/h2>\n<p>SpamAssassin dzia\u0142a w oparciu o system punktowy. Ka\u017cdy przychodz\u0105cy e-mail jest analizowany wed\u0142ug okre\u015blonych kryteri\u00f3w i przypisywane s\u0105 mu punkty, kt\u00f3re wskazuj\u0105, jak prawdopodobne jest, \u017ce jest to <a href=\"https:\/\/webhosting.de\/pl\/srs-mit-postfix-unter-centos\/\">Spam<\/a> akty. Regulowany przez u\u017cytkownika pr\u00f3g okre\u015bla punkt, w kt\u00f3rym wiadomo\u015b\u0107 jest traktowana jako spam i sortowana. Aby uzyska\u0107 jak najdok\u0142adniejszy wynik, program ma do dyspozycji ca\u0142y szereg r\u00f3\u017cnych metod, takich jak:<\/p>\n<p>- Bia\u0142a i czarna lista oparta na DNS<br \/>\n- Filtr sum kontrolnych od dostawc\u00f3w open source i komercyjnych, takich jak DCC lub Vipul's Razor<br \/>\n- Filtr ekspresji oparty na <a href=\"https:\/\/webhosting.de\/pl\/keywords\/\">S\u0142owa kluczowe<\/a> lub frazesy<br \/>\n- System Hashcash (Proof of Work)<br \/>\n- DIM i SPF<br \/>\n- Listy adres\u00f3w URL jako dane wyj\u015bciowe przez trackery takie jak uribl.com<\/p>\n<h2>Filtr bayesowski<\/h2>\n<p>Opr\u00f3cz mniej lub bardziej statycznych system\u00f3w filtruj\u0105cych, SpamAssassin posiada algorytm zastosowany w filtrze bayesowskim, kt\u00f3ry jest w stanie \"nauczy\u0107 si\u0119\" pewnych heurystycznych element\u00f3w, tj. powtarzaj\u0105cych si\u0119, wyr\u00f3\u017cniaj\u0105cych si\u0119 element\u00f3w, z ju\u017c wys\u0142anych wiadomo\u015bci spam i w ten spos\u00f3b dostosowa\u0107 si\u0119 do zachowania u\u017cytkownika. System ten oparty jest na bajesowskiej koncepcji prawdopodobie\u0144stwa, ale cz\u0119sto by\u0142 krytykowany, poniewa\u017c niewyuczony system filtruj\u0105cy cz\u0119sto daje fa\u0142szywe wyniki pozytywne.<\/p>\n<p>Aby temu zapobiec, zaleca si\u0119 najpierw dok\u0142adniejsze sprawdzenie wiadomo\u015bci e-mail sklasyfikowanych jako spam. Filtr Bayesowski zawiera narz\u0119dzie, dost\u0119pne poprzez lini\u0119 polece\u0144 sa-learn, kt\u00f3re mo\u017ce by\u0107 u\u017cyte do wyszukiwania heurystyki w pojedynczych wiadomo\u015bciach e-mail lub ca\u0142ych skrzynkach pocztowych. Je\u015bli proces ten zosta\u0142 przeprowadzony kilka razy, liczba wynik\u00f3w fa\u0142szywie dodatnich jest znacznie zmniejszona.<\/p>\n<h2>Aktualny rozw\u00f3j<\/h2>\n<p>W trakcie ostatnich aktualizacji wersji 3.3 i 3.4, SpamAssassin otrzyma\u0142 wa\u017cn\u0105 now\u0105 funkcj\u0119, kt\u00f3ra powinna mie\u0107 istotny wp\u0142yw na wykorzystanie zasob\u00f3w. Chocia\u017c optymalizacja wydajno\u015bci zosta\u0142a dokonana z wyprzedzeniem, program zachowuje si\u0119 teraz jak deterministyczny, sko\u0144czony automat. Zasadniczo, sprz\u0119t mo\u017ce lepiej dostosowa\u0107 si\u0119 do DEA, poniewa\u017c mo\u017cliwe stany zawsze dzia\u0142aj\u0105 deterministycznie, tzn. z g\u00f3ry ustalone. Odpowiednio zaprogramowany system - podobnie jak dzisiejszy sprz\u0119t serwerowy - mo\u017ce w ten spos\u00f3b rezerwowa\u0107 i uwalnia\u0107 zasoby w spos\u00f3b krytyczny pod wzgl\u0119dem czasu.<\/p>\n<h2>Wsparcie dla program\u00f3w<\/h2>\n<p>Jak ju\u017c wspomniano, wysoka elastyczno\u015b\u0107 kodu programu jest unikaln\u0105 zalet\u0105, ale SpamAssassin posiada r\u00f3wnie\u017c udane API, kt\u00f3re umo\u017cliwia wymian\u0119 danych z wieloma innymi programami. W\u015br\u00f3d projekt\u00f3w open source s\u0105 to cz\u0119sto u\u017cywane klienty poczty elektronicznej Mozilla Thunderbird, KMail, a tak\u017ce Novell Evolution czy egzotyki takie jak Citadel czy Claws Mail. W przypadku produkt\u00f3w komercyjnych SpamAssassin jest ju\u017c zintegrowany z kodem programu. Tak jest w przypadku serwera Icewarp, McAfee SpamKiller, Mac OS X Server lub Sophos PureMessage.<\/p>","protected":false},"excerpt":{"rendered":"<p>Pro Tag werden 28 Milliarden SPAM-Mails versendet. Das ist ein Gro\u00dfteil des gesamten E-Mail-Verkehrs und kaum ein E-Mail-Konto bleibt von den unerw\u00fcnschten Werbemails verschont. Die bisher einzige M\u00f6glichkeit, sein Postfach vor ihnen zu sch\u00fctzen, ist ein guter und funktionierender Spam-Filter. Auch SpamAssassin ist ein solcher Spam-Filter, jedoch macht ihn vor allem sein buchst\u00e4blich handverlesener Algorithmus [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":611,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_crdt_document":"","inline_featured_image":false,"footnotes":""},"categories":[673,788],"tags":[182,151,184],"class_list":["post-4180","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-computer_und_internet","category-software-computer_und_internet","tag-antivirus","tag-spam","tag-spamassassin"],"acf":[],"_wp_attached_file":null,"_wp_attachment_metadata":null,"litespeed-optimize-size":null,"litespeed-optimize-set":null,"_elementor_source_image_hash":null,"_wp_attachment_image_alt":null,"stockpack_author_name":null,"stockpack_author_url":null,"stockpack_provider":null,"stockpack_image_url":null,"stockpack_license":null,"stockpack_license_url":null,"stockpack_modification":null,"color":null,"original_id":null,"original_url":null,"original_link":null,"unsplash_location":null,"unsplash_sponsor":null,"unsplash_exif":null,"unsplash_attachment_metadata":null,"_elementor_is_screenshot":null,"surfer_file_name":null,"surfer_file_original_url":null,"envato_tk_source_kit":null,"envato_tk_source_index":null,"envato_tk_manifest":null,"envato_tk_folder_name":null,"envato_tk_builder":null,"envato_elements_download_event":null,"_menu_item_type":null,"_menu_item_menu_item_parent":null,"_menu_item_object_id":null,"_menu_item_object":null,"_menu_item_target":null,"_menu_item_classes":null,"_menu_item_xfn":null,"_menu_item_url":null,"_trp_menu_languages":null,"rank_math_primary_category":null,"rank_math_title":null,"inline_featured_image":null,"_yoast_wpseo_primary_category":null,"rank_math_schema_blogposting":null,"rank_math_schema_videoobject":null,"_oembed_049c719bc4a9f89deaead66a7da9fddc":null,"_oembed_time_049c719bc4a9f89deaead66a7da9fddc":null,"_yoast_wpseo_focuskw":"spam","_yoast_wpseo_linkdex":null,"_oembed_27e3473bf8bec795fbeb3a9d38489348":null,"_oembed_c3b0f6959478faf92a1f343d8f96b19e":null,"_trp_translated_slug_en_us":null,"_wp_desired_post_slug":null,"_yoast_wpseo_title":null,"tldname":null,"tldpreis":null,"tldrubrik":null,"tldpolicylink":null,"tldsize":null,"tldregistrierungsdauer":null,"tldtransfer":null,"tldwhoisprivacy":null,"tldregistrarchange":null,"tldregistrantchange":null,"tldwhoisupdate":null,"tldnameserverupdate":null,"tlddeletesofort":null,"tlddeleteexpire":null,"tldumlaute":null,"tldrestore":null,"tldsubcategory":null,"tldbildname":null,"tldbildurl":null,"tldclean":null,"tldcategory":null,"tldpolicy":null,"tldbesonderheiten":null,"tld_bedeutung":null,"_oembed_d167040d816d8f94c072940c8009f5f8":null,"_oembed_b0a0fa59ef14f8870da2c63f2027d064":null,"_oembed_4792fa4dfb2a8f09ab950a73b7f313ba":null,"_oembed_33ceb1fe54a8ab775d9410abf699878d":null,"_oembed_fd7014d14d919b45ec004937c0db9335":null,"_oembed_21a029d076783ec3e8042698c351bd7e":null,"_oembed_be5ea8a0c7b18e658f08cc571a909452":null,"_oembed_a9ca7a298b19f9b48ec5914e010294d2":null,"_oembed_f8db6b27d08a2bb1f920e7647808899a":null,"_oembed_168ebde5096e77d8a89326519af9e022":null,"_oembed_cdb76f1b345b42743edfe25481b6f98f":null,"_oembed_87b0613611ae54e86e8864265404b0a1":null,"_oembed_27aa0e5cf3f1bb4bc416a4641a5ac273":null,"_oembed_time_27aa0e5cf3f1bb4bc416a4641a5ac273":null,"_tldname":null,"_tldclean":null,"_tldpreis":null,"_tldcategory":null,"_tldsubcategory":null,"_tldpolicy":null,"_tldpolicylink":null,"_tldsize":null,"_tldregistrierungsdauer":null,"_tldtransfer":null,"_tldwhoisprivacy":null,"_tldregistrarchange":null,"_tldregistrantchange":null,"_tldwhoisupdate":null,"_tldnameserverupdate":null,"_tlddeletesofort":null,"_tlddeleteexpire":null,"_tldumlaute":null,"_tldrestore":null,"_tldbildname":null,"_tldbildurl":null,"_tld_bedeutung":null,"_tldbesonderheiten":null,"_oembed_ad96e4112edb9f8ffa35731d4098bc6b":null,"_oembed_8357e2b8a2575c74ed5978f262a10126":null,"_oembed_3d5fea5103dd0d22ec5d6a33eff7f863":null,"_eael_widget_elements":null,"_oembed_0d8a206f09633e3d62b95a15a4dd0487":null,"_oembed_time_0d8a206f09633e3d62b95a15a4dd0487":null,"_aioseo_description":null,"_eb_attr":null,"_eb_data_table":null,"_oembed_819a879e7da16dd629cfd15a97334c8a":null,"_oembed_time_819a879e7da16dd629cfd15a97334c8a":null,"_acf_changed":null,"_wpcode_auto_insert":null,"_edit_last":null,"_edit_lock":null,"_oembed_e7b913c6c84084ed9702cb4feb012ddd":null,"_oembed_bfde9e10f59a17b85fc8917fa7edf782":null,"_oembed_time_bfde9e10f59a17b85fc8917fa7edf782":null,"_oembed_03514b67990db061d7c4672de26dc514":null,"_oembed_time_03514b67990db061d7c4672de26dc514":null,"rank_math_news_sitemap_robots":"index","rank_math_robots":["index"],"_eael_post_view_count":"5041","_trp_automatically_translated_slug_ru_ru":null,"_trp_automatically_translated_slug_et":"spamassassin-the-free-anti-spam-kaitse","_trp_automatically_translated_slug_lv":"spamassassin-the-free-anti-spam-protection","_trp_automatically_translated_slug_fr_fr":null,"_trp_automatically_translated_slug_en_us":null,"_wp_old_slug":null,"_trp_automatically_translated_slug_da_dk":null,"_trp_automatically_translated_slug_pl_pl":null,"_trp_automatically_translated_slug_es_es":null,"_trp_automatically_translated_slug_hu_hu":null,"_trp_automatically_translated_slug_fi":"spamassassin-the-free-anti-spam-suojaus","_trp_automatically_translated_slug_ja":"%e3%82%b9%e3%83%91%e3%83%a0%e3%82%a2%e3%82%b5%e3%82%b7%e3%83%b3","_trp_automatically_translated_slug_lt_lt":null,"_elementor_edit_mode":null,"_elementor_template_type":null,"_elementor_version":null,"_elementor_pro_version":null,"_wp_page_template":"default","_elementor_page_settings":null,"_elementor_data":null,"_elementor_css":null,"_elementor_conditions":null,"_happyaddons_elements_cache":null,"_oembed_75446120c39305f0da0ccd147f6de9cb":null,"_oembed_time_75446120c39305f0da0ccd147f6de9cb":null,"_oembed_3efb2c3e76a18143e7207993a2a6939a":null,"_oembed_time_3efb2c3e76a18143e7207993a2a6939a":null,"_oembed_59808117857ddf57e478a31d79f76e4d":null,"_oembed_time_59808117857ddf57e478a31d79f76e4d":null,"_oembed_965c5b49aa8d22ce37dfb3bde0268600":null,"_oembed_time_965c5b49aa8d22ce37dfb3bde0268600":null,"_oembed_81002f7ee3604f645db4ebcfd1912acf":null,"_oembed_time_81002f7ee3604f645db4ebcfd1912acf":null,"_elementor_screenshot":null,"_oembed_7ea3429961cf98fa85da9747683af827":null,"_oembed_time_7ea3429961cf98fa85da9747683af827":null,"_elementor_controls_usage":null,"_elementor_page_assets":[],"_elementor_screenshot_failed":null,"theplus_transient_widgets":["tp-video-player"],"_eael_custom_js":null,"_wp_old_date":null,"_trp_automatically_translated_slug_it_it":null,"_trp_automatically_translated_slug_pt_pt":null,"_trp_automatically_translated_slug_zh_cn":null,"_trp_automatically_translated_slug_nl_nl":null,"_trp_automatically_translated_slug_pt_br":null,"_trp_automatically_translated_slug_sv_se":null,"rank_math_analytic_object_id":"881","rank_math_internal_links_processed":null,"_trp_automatically_translated_slug_ro_ro":null,"_trp_automatically_translated_slug_sk_sk":null,"_trp_automatically_translated_slug_bg_bg":null,"_trp_automatically_translated_slug_sl_si":null,"litespeed_vpi_list":["webhostinglogo.png"],"litespeed_vpi_list_mobile":["webhostinglogo.png"],"rank_math_seo_score":null,"rank_math_contentai_score":null,"ilj_limitincominglinks":null,"ilj_maxincominglinks":null,"ilj_limitoutgoinglinks":null,"ilj_maxoutgoinglinks":null,"ilj_limitlinksperparagraph":null,"ilj_linksperparagraph":null,"ilj_blacklistdefinition":null,"ilj_linkdefinition":["spamassassin - der kostenlose antispam schutz","spam"],"_eb_reusable_block_ids":null,"rank_math_focus_keyword":"spam","rank_math_og_content_image":null,"_yoast_wpseo_metadesc":"Die bisher einzige M\u00f6glichkeit, sein Postfach vor ihnen zu sch\u00fctzen, ist ein guter und funktionierender Spam-Filter wie SpamAssassin","_yoast_wpseo_content_score":null,"_yoast_wpseo_focuskeywords":null,"_yoast_wpseo_keywordsynonyms":null,"_yoast_wpseo_estimated-reading-time-minutes":null,"rank_math_description":"Die bisher einzige M\u00f6glichkeit, sein Postfach vor ihnen zu sch\u00fctzen, ist ein guter und funktionierender Spam-Filter wie SpamAssassin","surfer_last_post_update":null,"surfer_last_post_update_direction":null,"surfer_keywords":null,"surfer_location":null,"surfer_draft_id":null,"surfer_permalink_hash":null,"surfer_scrape_ready":null,"_thumbnail_id":"611","footnotes":null,"_links":{"self":[{"href":"https:\/\/webhosting.de\/pl\/wp-json\/wp\/v2\/posts\/4180","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/webhosting.de\/pl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/webhosting.de\/pl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/webhosting.de\/pl\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/webhosting.de\/pl\/wp-json\/wp\/v2\/comments?post=4180"}],"version-history":[{"count":0,"href":"https:\/\/webhosting.de\/pl\/wp-json\/wp\/v2\/posts\/4180\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/webhosting.de\/pl\/wp-json\/wp\/v2\/media\/611"}],"wp:attachment":[{"href":"https:\/\/webhosting.de\/pl\/wp-json\/wp\/v2\/media?parent=4180"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/webhosting.de\/pl\/wp-json\/wp\/v2\/categories?post=4180"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/webhosting.de\/pl\/wp-json\/wp\/v2\/tags?post=4180"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}