{"id":101456,"date":"2021-09-29T16:22:36","date_gmt":"2021-09-29T14:22:36","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/novaya-versiya-pochtovogo-servera-exim-4-95"},"modified":"2021-09-29T16:22:36","modified_gmt":"2021-09-29T14:22:36","slug":"novaya-versiya-pochtovogo-servera-exim-4-95","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pl\/blog\/news\/novaya-versiya-pochtovogo-servera-exim-4-95","title":{"rendered":"Nowa wersja serwera pocztowego Exim 4.95","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Zosta\u0142a wydana wersja serwera pocztowego Exim 4.95, w kt\u00f3rej wprowadzone zosta\u0142y zaleg\u0142e poprawki oraz nowe mo\u017cliwo\u015bci. Zgodnie z wrze\u015bniowym zautomatyzowanym badaniem ponad miliona serwer\u00f3w pocztowych, udzia\u0142 Exim wynosi 58% (rok temu 57,59%), Postfix jest u\u017cywany na 34,92% (34,70%) serwer\u00f3w pocztowych, Sendmail \u2014 3,52% (3,75%), MailEnable \u2014 2% (2,07%), MDaemon \u2014 0,57% (0,73%), Microsoft Exchange \u2014 0,32% (0,42%). G\u0142\u00f3wne zmiany:  <\/p>\n<ul>\n<li class=\"l\"> Og\u0142oszono stabilne wsparcie dla trybu przetwarzania kolejek wiadomo\u015bci fast-ramp, kt\u00f3ry pozwala przyspieszy\u0107 rozpocz\u0119cie dostarczania wiadomo\u015bci przy du\u017cym rozmiarze kolejki do wysy\u0142ki oraz przy du\u017cej liczbie wiadomo\u015bci kierowanych do typowych host\u00f3w, na przyk\u0142ad przy wysy\u0142ce du\u017cej ilo\u015bci e-maili do du\u017cych dostawc\u00f3w poczty lub wysy\u0142ce przez po\u015bredniego agenta transferu wiadomo\u015bci (smarthost). Je\u015bli tryb jest w\u0142\u0105czony za pomoc\u0105 opcji \u00abqueue_fast_ramp\u00bb i dwufazowe przetwarzanie kolejki (\u00ab-qq\u00bb) wykrywa du\u017c\u0105 porcj\u0119 wiadomo\u015bci skierowanych do konkretnego pocztowego <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/pl\/server\/dts-shicago\/\"   title=\"serwera\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2902\">serwera<\/a>, to dostarczanie dla danego hosta zostanie rozpocz\u0119te niezw\u0142ocznie.\n<li class=\"l\"> Zosta\u0142a ustabilizowana alternatywna implementacja mechanizmu SRS (Sender Rewriting Scheme) \u2014 \u00abSRS_NATIVE\u00bb, kt\u00f3ra nie wymaga zewn\u0119trznych zale\u017cno\u015bci (stara wersja eksperymentalna wymaga\u0142a zainstalowania biblioteki libsrs_alt). SRS pozwala na przepisanie adresu nadawcy przy przekazywaniu bez naruszania weryfikacji SPF (Sender Policy Framework) oraz zapewnia zachowanie danych o nadawcy w celu kierowania <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/pl\/server\/dts-prohoster\/\"   title=\"serwerem\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3022\">serwerem<\/a> wiadomo\u015bci w przypadku b\u0142\u0119du dostawy. Istota metody polega na tym, \u017ce podczas nawi\u0105zywania po\u0142\u0105czenia przesy\u0142ane s\u0105 informacje o to\u017csamo\u015bci z oryginalnym nadawc\u0105, na przyk\u0142ad przy przepisaniu alice@example.org na alice@example.com zobaczymy \u00abSRS0=HHH=TT=example.org=alice@example.com\u00bb. SRS jest istotny, na przyk\u0142ad, przy organizacji pracy list\u00f3w mailingowych, w kt\u00f3rych oryginalna wiadomo\u015b\u0107 jest przekazywana innym odbiorcom.\n<li class=\"l\"> Ustawiono stabilno\u015b\u0107 opcji TLS_RESUME, kt\u00f3ra umo\u017cliwia wznowienie wcze\u015bniej przerwanego po\u0142\u0105czenia TLS.\n<li class=\"l\"> Zosta\u0142a ustabilizowana obs\u0142uga wysokowydajnej, kompaktowej wbudowanej bazy danych LMDB, kt\u00f3ra przechowuje dane w formacie klucz-warto\u015b\u0107. Obs\u0142ugiwane s\u0105 tylko zapytania lookup z gotowych baz danych po jednym kluczu (zapis z exim w LMDB nie jest zaimplementowany). Na przyk\u0142ad, do weryfikacji domeny nadawcy w regu\u0142ach mo\u017cna u\u017cywa\u0107 zapytania w postaci \u00ab${lookup{$sender_address_domain}lmdb{\/var\/lib\/spamdb\/stopdomains.mdb}}\u00bb.\n<li class=\"l\"> Dodano opcj\u0119 \u00abmessage_linelength_limit\u00bb do okre\u015blenia ograniczenia liczby znak\u00f3w w linii.\n<li class=\"l\"> Umo\u017cliwiono ignorowanie pami\u0119ci podr\u0119cznej przy wykonywaniu zapyta\u0144 lookup.\n<li class=\"l\"> Dla transportu appendfile wprowadzono sprawdzanie limit\u00f3w podczas odbierania wiadomo\u015bci (sesja SMTP).\n<li class=\"l\"> W zapytaniach lookup do SQLite dodano obs\u0142ug\u0119 opcji &#171;file=&lt;path&gt;&#187;, pozwalaj\u0105cej na wskazanie pliku bazy danych dla konkretnej operacji bez podawania prefiks\u00f3w w ci\u0105gu polecenia SQL.\n<li class=\"l\"> W zapytaniach lookup do Lsearch dodano obs\u0142ug\u0119 opcji &#171;ret=full&#187; do zwracania ca\u0142ego bloku danych odpowiadaj\u0105cego kluczowi, a nie tylko pierwszego wiersza.\n<li class=\"l\"> Ustawienie po\u0142\u0105cze\u0144 TLS przyspieszono dzi\u0119ki wst\u0119pnemu za\u0142adowaniu i pami\u0119ci podr\u0119cznej informacji (np. certyfikat\u00f3w) zamiast ich \u0142adowania przed rozpocz\u0119ciem przetwarzania ka\u017cdego po\u0142\u0105czenia.\n<li class=\"l\"> Dodano parametr &#171;proxy_protocol_timeout&#187; do konfiguracji limitu czasu dla protoko\u0142u Proxy.\n<li class=\"l\"> Dodano parametr &#171;smtp_backlog_monitor&#187; do w\u0142\u0105czenia logowania informacji o rozmiarze kolejki oczekuj\u0105cych po\u0142\u0105cze\u0144 (backlog).\n<li class=\"l\"> Dodano parametr &#171;hosts_require_helo&#187;, kt\u00f3ry zabrania przesy\u0142ania komendy MAIL, je\u015bli wcze\u015bniej nie zosta\u0142a przes\u0142ana komenda HELO lub EHLO.\n<li class=\"l\"> Dodano parametr &#171;allow_insecure_tainted_data&#187;, dzi\u0119ki kt\u00f3remu niebezpieczne osadzanie znak\u00f3w specjalnych w danych spowoduje wy\u015bwietlenie ostrze\u017cenia zamiast b\u0142\u0119du.\n<li class=\"l\"> Zaprzestano wsparcia dla platformy macOS (pliki binarne przeniesione do kategorii unsupported).<br \/>\n<br \/>\u0179r\u00f3d\u0142o: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=55882\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 \u043f\u043e\u0447\u0442\u043e\u0432\u043e\u0433\u043e \u0441\u0435\u0440\u0432\u0435\u0440\u0430 Exim 4.95, \u0432 \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0432\u043d\u0435\u0441\u0435\u043d\u044b \u043d\u0430\u043a\u043e\u043f\u0438\u0432\u0448\u0438\u0435\u0441\u044f \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0438 \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u044b \u043d\u043e\u0432\u044b\u0435 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u0438. \u0412 \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0438\u0438 \u0441 \u0441\u0435\u043d\u0442\u044f\u0431\u0440\u044c\u0441\u043a\u0438\u043c \u0430\u0432\u0442\u043e\u043c\u0430\u0442\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u043c \u043e\u043f\u0440\u043e\u0441\u043e\u043c \u0431\u043e\u043b\u0435\u0435 \u043c\u0438\u043b\u043b\u0438\u043e\u043d\u0430 \u043f\u043e\u0447\u0442\u043e\u0432\u044b\u0445 \u0441\u0435\u0440\u0432\u0435\u0440\u043e\u0432, \u0434\u043e\u043b\u044f Exim \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 58% (\u0433\u043e\u0434 \u043d\u0430\u0437\u0430\u0434 57.59%), Postfix \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f \u043d\u0430 34.92% (34.70%) \u043f\u043e\u0447\u0442\u043e\u0432\u044b\u0445 \u0441\u0435\u0440\u0432\u0435\u0440\u043e\u0432, Sendmail &#8212; 3.52% (3.75%), MailEnable &#8212; 2% (2.07%), MDaemon &#8212; 0.57% (0.73%), Microsoft Exchange &#8212; 0.32% [&hellip;]<\/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":[702],"tags":[],"class_list":["post-101456","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 \u043f\u043e\u0447\u0442\u043e\u0432\u043e\u0433\u043e \u0441\u0435\u0440\u0432\u0435\u0440\u0430 Exim 4.95, \u0432 \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0432\u043d\u0435\u0441\u0435\u043d\u044b \u043d\u0430\u043a\u043e\u043f\u0438\u0432\u0448\u0438\u0435\u0441\u044f \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0438 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