{"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\/cs\/blog\/news\/novaya-versiya-pochtovogo-servera-exim-4-95","title":{"rendered":"Nov\u00e1 verze po\u0161tovn\u00edho serveru Exim 4.95","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Byl vyd\u00e1n po\u0161tovn\u00ed server Exim 4.95, do kter\u00e9ho byla zahrnuta akumulovan\u00e1 opravy a p\u0159id\u00e1ny nov\u00e9 funkce. Podle z\u00e1\u0159ijov\u00e9ho automatizovan\u00e9ho pr\u016fzkumu v\u00edce ne\u017e milionu po\u0161tovn\u00edch server\u016f \u010din\u00ed pod\u00edl Exim 58 % (p\u0159ed rokem 57,59 %), Postfix se pou\u017e\u00edv\u00e1 na 34,92 % (34,70 %) po\u0161tovn\u00edch serverech, Sendmail - 3,52 % (3,75 %), MailEnable - 2 % (2,07 %), MDaemon - 0,57 % (0,73 %), Microsoft Exchange - 0,32 % (0,42 %). Hlavn\u00ed zm\u011bny:  <\/p>\n<ul>\n<li class=\"l\"> Byla ozn\u00e1mena stabiln\u00ed podpora re\u017eimu zpracov\u00e1n\u00ed fronty zpr\u00e1v fast-ramp, kter\u00fd umo\u017e\u0148uje urychlit za\u010d\u00e1tek dod\u00e1vky zpr\u00e1v p\u0159i velk\u00e9 velikosti fronty pro odesl\u00e1n\u00ed a p\u0159i vysok\u00e9m po\u010dtu zpr\u00e1v zas\u00edlan\u00fdch na typick\u00e9 hostitele, nap\u0159\u00edklad p\u0159i p\u0159ed\u00e1v\u00e1n\u00ed velk\u00e9ho po\u010dtu e-mail\u016f velk\u00fdm po\u0161tovn\u00edm poskytovatel\u016fm nebo p\u0159i odes\u00edl\u00e1n\u00ed prost\u0159ednictv\u00edm zprost\u0159edkovan\u00e9ho p\u0159enosov\u00e9ho agenta (smarthost). Pokud je re\u017eim zapnut pomoc\u00ed volby \u201equeue_fast_ramp\u201c a dvoustup\u0148ov\u00e9 zpracov\u00e1n\u00ed fronty (\u2018-qq\u2019) odhal\u00ed existenci velk\u00e9 porce zpr\u00e1v ur\u010den\u00fdch konkr\u00e9tn\u00edmu po\u0161tovn\u00edmu <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/cs\/server\/dts-shicago\/\"   title=\"serveru\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2902\">serveru<\/a>, doru\u010den\u00ed pro tento hostitel bude zah\u00e1jeno okam\u017eit\u011b.\n<li class=\"l\"> Byla stabilizov\u00e1na alternativn\u00ed implementace mechanismu SRS (Sender Rewriting Scheme) - \u201eSRS_NATIVE\u201c, kter\u00e1 nevy\u017eaduje extern\u00ed z\u00e1vislosti (star\u0161\u00ed experiment\u00e1ln\u00ed implementace vy\u017eadovala instalaci knihovny libsrs_alt). SRS umo\u017e\u0148uje p\u0159epsat adresu odes\u00edlatele p\u0159i p\u0159epos\u00edl\u00e1n\u00ed bez poru\u0161en\u00ed kontrol SPF (Sender Policy Framework) a zaji\u0161\u0165uje uchov\u00e1n\u00ed \u00fadaj\u016f o odes\u00edlateli pro sm\u011brov\u00e1n\u00ed <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/cs\/server\/dts-prohoster\/\"   title=\"serverem\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3022\">serverem<\/a> zpr\u00e1v v p\u0159\u00edpad\u011b chyby dod\u00e1n\u00ed. Podstata metody spo\u010d\u00edv\u00e1 v tom, \u017ee p\u0159i instalaci spojen\u00ed se p\u0159ed\u00e1vaj\u00ed informace o identit\u011b s p\u016fvodn\u00edm odes\u00edlatelem, nap\u0159\u00edklad p\u0159i p\u0159eps\u00e1n\u00ed alice@example.org na alice@example.com bude uvedeno \u201eSRS0=HHH=TT=example.org=alice@example.com\u201c. SRS je relevantn\u00ed nap\u0159\u00edklad p\u0159i organizaci pr\u00e1ce seznam\u016f adres\u00e1t\u016f, v nich\u017e je p\u016fvodn\u00ed zpr\u00e1va p\u0159eposl\u00e1na jin\u00fdm p\u0159\u00edjemc\u016fm.\n<li class=\"l\"> Byla stabilizov\u00e1na volba TLS_RESUME, kter\u00e1 umo\u017e\u0148uje obnovit d\u0159\u00edve p\u0159eru\u0161en\u00e9 TLS spojen\u00ed.\n<li class=\"l\"> Byla stabilizov\u00e1na podpora vysoce v\u00fdkonn\u00e9 kompaktn\u00ed vestav\u011bn\u00e9 datab\u00e1ze LMDB, kter\u00e1 uchov\u00e1v\u00e1 data ve form\u00e1tu kl\u00ed\u010d-hodnota. Podporuj\u00ed se pouze lookup-dotazy z hotov\u00fdch datab\u00e1z\u00ed podle jednoho kl\u00ed\u010de (z\u00e1znam z exim do LMDB nen\u00ed implementov\u00e1n). Nap\u0159\u00edklad pro kontrolu dom\u00e9ny odes\u00edlatele v pravidlech lze pou\u017e\u00edt dotaz typu \u201e${lookup{$sender_address_domain}lmdb{\/var\/lib\/spamdb\/stopdomains.mdb}}\u201c.\n<li class=\"l\"> Byla p\u0159id\u00e1na volba \u201emessage_linelength_limit\u201c pro nastaven\u00ed limity na po\u010det znak\u016f v \u0159\u00e1dku.\n<li class=\"l\"> Byla poskytnuta mo\u017enost ignorovat cache p\u0159i prov\u00e1d\u011bn\u00ed lookup dotaz\u016f.\n<li class=\"l\"> Pro transport appendfile byla implementov\u00e1na kontrola kv\u00f3t p\u0159i p\u0159\u00edjmu zpr\u00e1vy (SMTP relace).\n<li class=\"l\"> Do dotazech lookup v SQLite byla p\u0159id\u00e1na podpora volby &#171;file=&lt;path&gt;&#187;, kter\u00e1 umo\u017e\u0148uje ur\u010dit soubor s datab\u00e1z\u00ed pro konkr\u00e9tn\u00ed operaci bez uveden\u00ed prefix\u016f ve SQL p\u0159\u00edkazu.\n<li class=\"l\"> Do dotazech lookup v Lsearch byla p\u0159id\u00e1na podpora volby &#171;ret=full&#187; pro vr\u00e1cen\u00ed cel\u00e9ho bloku dat odpov\u00eddaj\u00edc\u00edho kl\u00ed\u010di, nikoli pouze prvn\u00ed \u0159\u00e1dky.\n<li class=\"l\"> Nastaven\u00ed TLS p\u0159ipojen\u00ed bylo zrychleno d\u00edky p\u0159edb\u011b\u017en\u00e9mu na\u010d\u00edt\u00e1n\u00ed a cachov\u00e1n\u00ed informac\u00ed (nap\u0159\u00edklad certifik\u00e1t\u016f) nam\u00edsto jejich na\u010d\u00edt\u00e1n\u00ed p\u0159ed za\u010d\u00e1tkem zpracov\u00e1n\u00ed ka\u017ed\u00e9ho p\u0159ipojen\u00ed.\n<li class=\"l\"> Byl p\u0159id\u00e1n parametr &#171;proxy_protocol_timeout&#187; pro nastaven\u00ed \u010dasov\u00e9ho limitu pro protokol Proxy.\n<li class=\"l\"> Byl p\u0159id\u00e1n parametr &#171;smtp_backlog_monitor&#187; pro povolen\u00ed z\u00e1znamu do logu informac\u00ed o velikosti fronty o\u010dek\u00e1vaj\u00edc\u00edch p\u0159ipojen\u00ed (backlog).\n<li class=\"l\"> Byl p\u0159id\u00e1n parametr &#171;hosts_require_helo&#187;, kter\u00fd zakazuje odesl\u00e1n\u00ed p\u0159\u00edkazu MAIL, pokud p\u0159edt\u00edm nebyl odesl\u00e1n p\u0159\u00edkaz HELO nebo EHLO.\n<li class=\"l\"> Byl p\u0159id\u00e1n parametr &#171;allow_insecure_tainted_data&#187;, p\u0159i jeho\u017e nastaven\u00ed bude nebezpe\u010dn\u00e9 escapov\u00e1n\u00ed speci\u00e1ln\u00edch znak\u016f v datech generovat varov\u00e1n\u00ed m\u00edsto chyby.\n<li class=\"l\"> Byla ukon\u010dena podpora platformy macOS (build soubory byly p\u0159esunuty do kategorie unsupported).<br \/>\n<br \/>Zdroj: <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 5.0.3 - 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 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