{"id":52893,"date":"2019-11-19T00:00:00","date_gmt":"2019-11-18T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/migratsiya-pochty-kak-bez-problem-sehat-s-odnogo-servera-i-otpravitsya-na-drugoj"},"modified":"2020-02-18T14:00:42","modified_gmt":"2020-02-18T11:00:42","slug":"migratsiya-pochty-kak-bez-problem-sehat-s-odnogo-servera-i-otpravitsya-na-drugoj","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/administrirovanie\/migratsiya-pochty-kak-bez-problem-sehat-s-odnogo-servera-i-otpravitsya-na-drugoj","title":{"rendered":"Migrace e-mailu: jak bez probl\u00e9m\u016f p\u0159ej\u00edt z jednoho serveru na druh\u00fd","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>T\u00e9ma uveden\u00e9 v n\u00e1zvu se m\u016f\u017ee zd\u00e1t pro v\u00e1\u017een\u00e9 \u010dten\u00e1\u0159e Habr\u016f neaktu\u00e1ln\u00ed, ale n\u011bkdy je prost\u011b nutn\u00e9 ji otev\u0159\u00edt. Skute\u010dnost je takov\u00e1, \u017ee u\u017e mnoho let pracuji jako administr\u00e1tor v humanitn\u00edm v\u011bdeck\u00e9m institutu, kde maj\u00ed zam\u011bstnanci takovou kvalifikaci v oblasti modern\u00edch informa\u010dn\u00edch technologi\u00ed, \u017ee pov\u011bstn\u00e1 \u00fa\u010detn\u00ed z anekdot o IT profesion\u00e1lech se na tomto pozad\u00ed zd\u00e1 b\u00fdt sborem filolog\u016f, zasv\u011bcen\u00fdch do v\u0161ech tajemstv\u00ed byt\u00ed. V\u00e1\u017een\u00ed v\u011bdci dok\u00e1\u017eou uv\u00e1d\u011bt n\u00e1zvy server\u016f e-mailu rusk\u00fdmi p\u00edsmeny, m\u00edsto znaku \u201e@\u201c ps\u00e1t do z\u00e1vorek \u201esovka\u201c (a pak \u0159\u00edkat, \u017ee tak to bylo naps\u00e1no v zaslan\u00e9 e-mailov\u00e9 adrese), pokou\u0161et se odes\u00edlat po\u0161tu na WhatsApp za pomoci The Bat! a d\u011blat spoustu dal\u0161\u00edch podivn\u00fdch v\u011bc\u00ed, \u010dasto ve stejn\u00e9 zpr\u00e1v\u011b. U\u010dit je je zbyte\u010dn\u00e9, bojovat s nimi nemo\u017en\u00e9; zb\u00fdv\u00e1 p\u0159ijmout sv\u016fj osud a maxim\u00e1ln\u011b automatizovat v\u0161echny operace spojen\u00e9 s opravou jejich chyb.<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex>Jednou z nejzlov\u011bstn\u011bj\u0161\u00edch a nebezpe\u010dn\u00fdch operac\u00ed v m\u00e9 praxi byla migrace webov\u00e9 po\u0161ty z jednoho serveru na druh\u00fd. Faktem je, \u017ee zam\u011bstnanci institutu maj\u00ed hned t\u0159i slu\u017eebn\u00ed po\u0161ty: jedna zahrnuje intern\u00ed server Exchange, druh\u00e1 funguje na Mail.ru a t\u0159et\u00ed \u2014 na Gmailu. Ne, nejsem idiot, a ani oni. Je to na\u0159\u00edzen\u00ed veden\u00ed, spojen\u00e9 s n\u011bjak\u00fdmi \u00fa\u0159edn\u00edmi hrami. N\u011bco mus\u00ed z\u016fstat uvnit\u0159 institutu na \u201ekorpor\u00e1tn\u00edm\u201c serveru, n\u011bco spojen\u00e9ho se \u017e\u00e1dostmi a granty mus\u00ed nevyhnuteln\u011b proch\u00e1zet ruskou po\u0161tou, a po\u0161ta Gmail je pro m\u00e9 v\u00e1\u017een\u00e9 kolegy spojena s takov\u00fdmi, bezpochyby nezbytn\u00fdmi v\u011bcmi, jako jsou dokumenty a tabulky Google, z\u00e1lohov\u00e1n\u00ed na disk atd. Probl\u00e9m je jen v tom, \u017ee u sedmi ch\u016fv, jak je zn\u00e1mo, d\u00edt\u011b bez o\u010di \u2014 to znamen\u00e1, \u017ee v tomto p\u0159\u00edpad\u011b, mezi t\u0159emi servery po\u0161ty, se m\u00ed kolegov\u00e9 v nejv\u00fdrazn\u011bj\u0161\u00edm smyslu slova da\u0159\u00ed ztr\u00e1cet ty nejd\u016fle\u017eit\u011bj\u0161\u00ed zpr\u00e1vy!<\/p>\n<p>Existuje je\u0161t\u011b jeden probl\u00e9m, kter\u00fd \u010dasto vede k nutnosti migrace e-mailu. Modern\u00ed e-mailov\u00e9 slu\u017eby \u010dasto umo\u017e\u0148uj\u00ed automatickou retranslaci zpr\u00e1v z jednoho serveru na druh\u00fd, tedy sb\u011br e-mail\u016f. A u\u017eivatel, kter\u00fd je zvykl\u00fd na to, \u017ee jeho zpr\u00e1vy na serveru, \u0159ekn\u011bme, Mail.ru, se automaticky kop\u00edruj\u00ed na e-mail Yandex, ob\u010das zapomene, \u017ee t\u00edmto zp\u016fsobem z\u00edsk\u00e1v\u00e1 p\u0159\u00edstup jen k t\u011bm zpr\u00e1v\u00e1m, kter\u00e9 byly obdr\u017eeny po nastaven\u00ed sb\u011bru e-mail\u016f. Proto m\u016f\u017ee m\u00edt p\u0159irozenou touhu prov\u00e9st \u00faplnou migraci e-mailu ze star\u00e9ho serveru na nov\u00fd, \u010dast\u011bji pou\u017e\u00edvan\u00fd, a k komu se s touto svou touhou obr\u00e1t\u00ed? Spr\u00e1vn\u011b: k nejbli\u017e\u0161\u00edmu sysadminovi!<\/p>\n<p>Mysl\u00edm, \u017ee podobn\u00e1 situace nast\u00e1v\u00e1 i u kohokoli, kdo je tak \u010di onak nucen m\u00edt n\u011bkolik e-mailov\u00fdch \u00fa\u010dt\u016f, zvl\u00e1\u0161\u0165 pokud je mus\u00ed spravovat, nebo jednodu\u0161e chce p\u0159ej\u00edt z serveru na server bez ztr\u00e1ty d\u016fle\u017eit\u00fdch informac\u00ed. Samoz\u0159ejm\u011b, IT experti tuto \u00falohu snadno vy\u0159e\u0161\u00ed b\u011bhem dvou kliknut\u00ed my\u0161\u00ed, ale pokud m\u00e1te s t\u011bmito z\u00e1le\u017eitostmi m\u00e1lo zku\u0161enost\u00ed, migrace e-mailu se m\u016f\u017ee st\u00e1t slo\u017eit\u00fdm \u00fakolem. Proto jsem se rozhodl stru\u010dn\u011b pod\u011blit o zku\u0161enosti, jak bez probl\u00e9m\u016f prov\u00e9st export e-mail\u016f do n\u011bjak\u00e9ho \u00falo\u017ei\u0161t\u011b a n\u00e1sledn\u00fd import e-mail\u016f na jin\u00fd server. Mo\u017en\u00e1, \u017ee n\u011bkomu tato operace pom\u016f\u017ee zbavit se drobn\u00fdch pot\u00ed\u017e\u00ed nebo jednodu\u0161e usnadn\u00ed \u017eivot!<\/p>\n<h2>Export e-mail\u016f: trochu teorie, trochu praxe<\/h2>\n<p>\nV z\u00e1sad\u011b e-mailov\u00e9 servery pracuj\u00ed s klientsk\u00fdmi programy podle jednoho ze dvou protokol\u016f: POP3 nebo IMAP. Pokud v\u00e1m tyto n\u00e1zvy nic ne\u0159\u00edkaj\u00ed (co\u017e se ob\u010das st\u00e1v\u00e1), pokus\u00edm se to vysv\u011btlit jednoduch\u00fdmi slovy: protokol POP3 stahuje zpr\u00e1vy ze serveru do va\u0161eho po\u010d\u00edta\u010de, zat\u00edmco protokol IMAP s nimi pracuje p\u0159\u00edmo na serveru. Star\u0161\u00ed e-mailov\u00ed klienti obvykle pracovali (a st\u00e1le pracuj\u00ed) s protokolem POP3, p\u0159i\u010dem\u017e ukl\u00e1daj\u00ed e-mailov\u00e9 zpr\u00e1vy do speci\u00e1ln\u011b ur\u010den\u00e9 slo\u017eky na klientsk\u00e9m za\u0159\u00edzen\u00ed (obvykle se nach\u00e1z\u00ed n\u011bkde v u\u017eivatelsk\u00e9m adres\u00e1\u0159i, mezi skryt\u00fdmi slo\u017ekami s daty aplikac\u00ed). Protokol IMAP je modern\u011bj\u0161\u00ed a umo\u017e\u0148uje tak\u00e9 importov\u00e1n\u00ed zpr\u00e1v do m\u00edstn\u00edho nebo s\u00ed\u0165ov\u00e9ho \u00falo\u017ei\u0161t\u011b. Tak\u017ee ot\u00e1zka nen\u00ed tolik v tom, jak st\u00e1hnout pot\u0159ebn\u00e9 zpr\u00e1vy, ale jak je p\u0159en\u00e9st na spr\u00e1vn\u00fd server pro proveden\u00ed migrace e-mailu. Nejjednodu\u0161\u0161\u00ed variantou je pou\u017e\u00edt protokol IMAP, zkop\u00edrovat p\u0159es n\u011bj v\u0161echny zpr\u00e1vy do n\u011bjak\u00e9ho \u00falo\u017ei\u0161t\u011b ve form\u00e1tu EML a potom je nahr\u00e1t do jin\u00e9 slo\u017eky na jin\u00e9m \u00fa\u010dtu, s ohledem na to, \u017ee form\u00e1t e-mailov\u00fdch soubor\u016f je obecn\u011b stejn\u00fd.<\/p>\n<h3>Jak to ud\u011blat?<\/h3>\n<p>\nJednoduch\u00e1 metoda, kterou s minim\u00e1ln\u00edmi n\u00e1klady pou\u017e\u00edv\u00e1m, je prov\u00e9st migraci e-mailov\u00fdch zpr\u00e1v pomoc\u00ed n\u011bjak\u00e9ho programu pro kop\u00edrov\u00e1n\u00ed dat, kter\u00fd podporuje protokol IMAP. To se prov\u00e1d\u00ed ve dvou kroc\u00edch.<\/p>\n<ul>\n<li>Import e-mail\u016f ze slo\u017eky na serveru do n\u011bjak\u00e9ho \u00falo\u017ei\u0161t\u011b ve form\u00e1tu EML.<\/li>\n<li>Export e-mailov\u00fdch zpr\u00e1v do jin\u00e9 slo\u017eky na jin\u00e9m serveru pomoc\u00ed IMAP.<\/li>\n<\/ul>\n<p>\nProgram pro migraci e-mail\u016f se z pohledu obou server\u016f chov\u00e1 jako b\u011b\u017en\u00fd IMAP klient. (Mimochodem, v\u011bt\u0161ina e-mailov\u00fdch server\u016f od v\u00e1s bude po\u017eadovat povolen\u00ed pou\u017e\u00edvat uveden\u00fd program jako e-mailov\u00e9ho klienta, tak\u017ee p\u0159ed proveden\u00edm migrace e-mailu pomoc\u00ed n\u011bjak\u00e9 utility se ur\u010dit\u011b p\u0159ihlaste do sv\u00e9ho e-mailov\u00e9ho \u00fa\u010dtu a povolte serveru pou\u017e\u00edvat tuto utilitu v seznamu dostupn\u00fdch klient\u016f pro protokol IMAP). Tyto programy obvykle vy\u017eaduj\u00ed minim\u00e1ln\u00ed ru\u010dn\u00ed pr\u00e1ci pro p\u0159edb\u011b\u017en\u00e9 nastaven\u00ed migrace e-mailu. Obvykle m\u016f\u017eete nastavit i rozvrh pro pravidelnou automatickou migraci e-mail\u016f ze serveru na server, pokud to pot\u0159ebujete. Osobn\u011b pou\u017e\u00edv\u00e1m k exportu e-mailov\u00fdch zpr\u00e1v program <noindex><a rel=\"nofollow\" href=\"https:\/\/www.handybackup.ru\/mail-export-and-migration.shtml\">Handy Backup<\/a><\/noindex>, proto\u017ee ji m\u00e1me t\u00e9m\u011b\u0159 na v\u0161ech stroj\u00edch a vy\u017eaduje minimum nastaven\u00ed, kter\u00e1 jsou nav\u00edc centralizovan\u011b prov\u00e1d\u011bna z administr\u00e1torsk\u00e9 stanice \u2014 nen\u00ed t\u0159eba nikam chodit. Ale, co\u017e se podstat\u011b zmi\u0148uje, pou\u017e\u00edvan\u00fd software nen\u00ed d\u016fle\u017eit\u00fd, pokud um\u00ed zajistit export a import e-mail\u016f p\u0159\u00edmo na <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/cs\/server\/\"   title=\"webov\u00e9ho serveru\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"755\">webov\u00e9ho serveru<\/a>, a podporoval jednotn\u00fd form\u00e1t pro zpr\u00e1vy na obou serverech.<\/p>\n<h3>A Microsoft to jako obvykle\u2026<\/h3>\n<p>\nDal\u0161\u00ed bolest \u2014 migrace e-mailov\u00e9 slu\u017eby Exchange nebo Outlook (nem\u00e1m na mysli server e-mailu Outlook.com, ale klienta), proto\u017ee Microsoft, jako obvykle, jde nestandardn\u00ed cestou. Dob\u0159e, pokud m\u00e1te po ruce specializovan\u00fd software pro export e-mail\u016f z Outlooku nebo Exchange \u2014 pak se \u00fakol zjednodu\u0161\u00ed na p\u0159e\u010dten\u00ed pokyn\u016f pro migraci e-mail\u016f pomoc\u00ed p\u0159\u00edslu\u0161n\u00e9ho programu. Na\u0161t\u011bst\u00ed existuje pom\u011brn\u011b hodn\u011b takov\u00fdch n\u00e1stroj\u016f, stejn\u011b jako specializovan\u00fdch plugin\u016f pro p\u0159\u00edslu\u0161n\u00fd software orientovan\u00fd na produkty Microsoft.<\/p>\n<h2>Migrace e-mail\u016f p\u0159es protokol POP3<\/h2>\n<p>\nN\u011bkte\u0159\u00ed maj\u00ed r\u00e1di extr\u00e9my, ale obecn\u011b to tak nen\u00ed. Proto nep\u0159en\u00e1\u0161ejte e-maily ze serveru na server pomoc\u00ed protokolu POP3, je to zastaral\u00e9 a nevzhledn\u00e9. P\u0159epn\u011bte se na IMAP na obou serverech (jak to ud\u011blat, najdete podrobn\u00e9 pokyny t\u00e9m\u011b\u0159 u ka\u017ed\u00e9ho poskytovatele), a pak ud\u011blejte v\u0161e, jak je pops\u00e1no v\u00fd\u0161e (nebo alespo\u0148 vyu\u017eijte migra\u010dn\u00ed n\u00e1stroj integrovan\u00fd do e-mailov\u00e9 slu\u017eby \u2014 n\u011bkdy takov\u00e9 n\u00e1stroje existuj\u00ed, i kdy\u017e jejich pohodl\u00ed a logika provozu obvykle zanech\u00e1v\u00e1 mnoho p\u0159\u00e1n\u00ed). M\u016f\u017eete tak\u00e9 vyzkou\u0161et starom\u00f3dn\u00ed ru\u010dn\u00ed metodu: p\u0159esunout zpr\u00e1vy z jedn\u00e9 slo\u017eky do druh\u00e9 pomoc\u00ed klientsk\u00e9ho programu, nebo je jednodu\u0161e ozna\u010dit a odeslat na nov\u00fd server. Kdysi, kdy\u017e jsme byli mal\u00ed, jsme to v\u0161ichni d\u011blali pr\u00e1v\u011b tak, a nep\u0159ipadalo n\u00e1m to nevhodn\u00e9, tak\u017ee v bezv\u00fdchodn\u00e9 situaci m\u016f\u017eete zkusit znovu se pustit do takov\u00e9 ru\u010dn\u00ed pr\u00e1ce\u2026<\/p>\n<p>Obecn\u011b plat\u00ed, \u017ee migrace e-mailu ze serveru na server pomoc\u00ed postupn\u00e9ho importu po\u0161ty do \u00falo\u017ei\u0161t\u011b a n\u00e1sledn\u00e9ho exportu e-mail\u016f na nov\u00fd server prost\u0159ednictv\u00edm protokolu IMAP spl\u0148uje v\u0161echny hlavn\u00ed krit\u00e9ria u\u017eivatelsk\u00e9 p\u0159\u00edv\u011btivosti program\u016f. Tato krit\u00e9ria zahrnuj\u00ed srozumitelnou logiku, bezpe\u010dnost, automatizaci a dostupnost mnoha p\u0159ipraven\u00fdch n\u00e1stroj\u016f, kter\u00e9 tuto pr\u00e1ci mohou vykonat za v\u00e1s. Douf\u00e1m, \u017ee tato moje pozn\u00e1mka bude n\u011bkomu u\u017eite\u010dn\u00e1 a usnadn\u00ed \u017eivot v p\u0159\u00edpadech, kdy \u00fa\u010detnictv\u00ed nebo pl\u00e1novac\u00ed odd\u011blen\u00ed n\u00e1hle po\u017eaduje p\u0159evod ze slu\u017eby Yandex na Mail.ru, z Google na Yahoo! nebo na jak\u00e9koliv jin\u00e9 m\u00edsto, kter\u00e9 na\u0159\u00edd\u00ed n\u00e1hle znepokojen\u00fd \u0161\u00e9f s p\u0159esunem e-mail\u016f. Nenechte se unavit, kolegov\u00e9!<br \/>\n<br \/>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/476252\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0422\u0435\u043c\u0430, \u0443\u043a\u0430\u0437\u0430\u043d\u043d\u0430\u044f \u0432 \u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043a\u0435, \u043c\u043e\u0436\u0435\u0442 \u0432\u044b\u0433\u043b\u044f\u0434\u0435\u0442\u044c \u043d\u0435\u0430\u043a\u0442\u0443\u0430\u043b\u044c\u043d\u043e\u0439 \u0434\u043b\u044f \u0443\u0432\u0430\u0436\u0430\u0435\u043c\u044b\u0445 \u0445\u0430\u0431\u0440\u043e\u0432\u0447\u0430\u043d, \u043d\u043e \u0438\u043d\u043e\u0433\u0434\u0430 \u043f\u043e\u0434\u043d\u044f\u0442\u044c \u0435\u0451 \u043f\u0440\u043e\u0441\u0442\u043e \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u043e. \u0414\u0435\u043b\u043e \u0432 \u0442\u043e\u043c, \u0447\u0442\u043e \u044f 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