{"id":7450,"date":"2026-10-12T13:03:36","date_gmt":"2026-10-12T11:03:36","guid":{"rendered":"https:\/\/eu.klytic.com\/zalohovani-e-mailu-kontinuita\/"},"modified":"2026-10-12T16:13:40","modified_gmt":"2026-10-12T14:13:40","slug":"zalohovani-e-mailu-kontinuita","status":"publish","type":"page","link":"https:\/\/eu.klytic.com\/cs\/zalohovani-e-mailu-kontinuita\/","title":{"rendered":"Z\u00e1lohov\u00e1n\u00ed e-mailu, maz\u00e1n\u00ed a v\u00fdpadek serveru"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"7450\" class=\"elementor elementor-7450 elementor-6288\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e6a15ef e-con-full kly-g e-flex e-con e-parent\" data-id=\"e6a15ef\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-554d282 e-con-full kly-g-hero e-flex e-con e-parent\" data-id=\"554d282\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-54b3feb e-con-full kly-g-hero-in e-flex e-con e-parent\" data-id=\"54b3feb\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b01516a elementor-widget elementor-widget-text-editor\" data-id=\"b01516a\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p class=\"kly-g-crumb\"><a href=\"\/\">Dom\u016f<\/a><span>\u203a<\/span>P\u0159\u00edru\u010dky<span>\u203a<\/span>E-mail<\/p><p class=\"kly-g-pill\" style=\"--pill:#60a5fa\">E-mail \u00b7 Pochopit<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bdf95f0 elementor-widget elementor-widget-heading\" data-id=\"bdf95f0\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Z\u00e1lohov\u00e1n\u00ed e-mailu, maz\u00e1n\u00ed a v\u00fdpadek serveru<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1d5f517 elementor-widget elementor-widget-text-editor\" data-id=\"1d5f517\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p class=\"kly-g-lead\">Ko\u0161, z\u00e1loha slu\u017eby a z\u00e1lo\u017en\u00ed platforma neodpov\u00eddaj\u00ed na tut\u00e9\u017e nehodu. Z\u00e1loha nez\u00e1visl\u00e1 na serveru dok\u00e1\u017ee vr\u00e1tit smazanou zpr\u00e1vu, i smazanou \u00famysln\u011b, pokud byla z\u00e1lohov\u00e1na p\u0159ed smaz\u00e1n\u00edm a datum je st\u00e1le v r\u00e1mci doby uchov\u00e1n\u00ed. Kdy\u017e server vypadne, p\u0159\u00edchoz\u00ed po\u0161ta \u010dek\u00e1 u odes\u00edlatele: rozhoduj\u00edc\u00ed je pak doba obnoven\u00ed provozu a mno\u017estv\u00ed zpr\u00e1v, jejich\u017e ztr\u00e1tu jste ochotni p\u0159ipustit.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bc03452 elementor-widget elementor-widget-text-editor\" data-id=\"bc03452\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p class=\"kly-g-meta\"><span>Aktualizov\u00e1no: <b>\u0159\u00edjen 2026<\/b><\/span><span><b>6 min<\/b><\/span><span>Citovan\u00e9 ofici\u00e1ln\u00ed zdroje<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-467ca01 e-con-full kly-g-body e-flex e-con e-parent\" data-id=\"467ca01\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-9fa9206 e-con-full kly-g-article e-flex e-con e-parent\" data-id=\"9fa9206\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0667c1a elementor-widget elementor-widget-text-editor\" data-id=\"0667c1a\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>T\u0159i z\u00e1chrann\u00e9 s\u00edt\u011b, t\u0159i nehody<\/h2><p>\u201eJe to z\u00e1lohovan\u00e9\u201c se \u0159\u00edk\u00e1 o velmi odli\u0161n\u00fdch mechanismech. Ka\u017ed\u00fd zachyt\u00ed jin\u00fd druh nehody, m\u00e1 n\u011bkoho, kdo jedn\u00e1, a svou mez.<\/p><div class=\"kly-table\"><table><thead><tr><th>Z\u00e1chrann\u00e1 s\u00ed\u0165<\/th><th>Kdo jedn\u00e1<\/th><th>Co zachyt\u00ed<\/th><th>Jej\u00ed mez<\/th><\/tr><\/thead><tbody><tr><td>Ko\u0161 a slo\u017eka pro obnoven\u00ed<\/td><td>U\u017eivatel ve sv\u00e9 schr\u00e1nce<\/td><td>Ned\u00e1vn\u00fd chybn\u00fd \u00fakon<\/td><td>Kr\u00e1tk\u00e1 doba, a nic, pokud je smaz\u00e1na nebo kompromitov\u00e1na samotn\u00e1 schr\u00e1nka<\/td><\/tr><tr><td>Z\u00e1loha slu\u017eby<\/td><td>Provozovatel, na vy\u017e\u00e1d\u00e1n\u00ed<\/td><td>N\u00e1vrat zpr\u00e1vy, slo\u017eky nebo schr\u00e1nky do d\u0159\u00edv\u011bj\u0161\u00edho stavu<\/td><td>Doba uchov\u00e1n\u00ed a interval mezi dv\u011bma z\u00e1lohami<\/td><\/tr><tr><td>Z\u00e1lo\u017en\u00ed platforma<\/td><td>Provozovatel, bez vy\u017e\u00e1d\u00e1n\u00ed<\/td><td>V\u00fdpadek: po\u0161ta d\u00e1l p\u0159ich\u00e1z\u00ed nebo se obnov\u00ed<\/td><td>Smazanou zpr\u00e1vu nevr\u00e1t\u00ed<\/td><\/tr><\/tbody><\/table><\/div><p>Kopie, kterou si dodavatel softwaru nebo poskytovatel hostingu uchov\u00e1v\u00e1 pro vlastn\u00ed dostupnost na v\u00edce disc\u00edch nebo serverech, pat\u0159\u00ed ke t\u0159et\u00ed s\u00edti. Chr\u00e1n\u00ed p\u0159ed poruchou hardwaru. Nechr\u00e1n\u00ed p\u0159ed smaz\u00e1n\u00edm: smazan\u00e1 zpr\u00e1va zmiz\u00ed okam\u017eit\u011b ze v\u0161ech replik. To je nej\u010dast\u011bj\u0161\u00ed z\u00e1m\u011bna mezi redundanc\u00ed a z\u00e1lohou.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5cbc1f0 elementor-widget elementor-widget-text-editor\" data-id=\"5cbc1f0\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Vr\u00e1t\u00ed z\u00e1loha smazanou zpr\u00e1vu?<\/h2><p>Ano, se t\u0159emi omezen\u00edmi.<\/p><ul><li><strong>Doba uchov\u00e1n\u00ed.<\/strong> P\u0159i uchov\u00e1n\u00ed 30 dn\u00ed u\u017e zpr\u00e1va smazan\u00e1 p\u0159ed \u0161esti t\u00fddny nen\u00ed v \u017e\u00e1dn\u00e9 z\u00e1loze. Pokud se smaz\u00e1n\u00ed odhal\u00ed a\u017e p\u0159i \u00fa\u010detn\u00ed z\u00e1v\u011brce, p\u0159ich\u00e1z\u00ed z\u00e1loha pozd\u011b.<\/li><li><strong>Bod obnovy.<\/strong> Z\u00e1loha je sn\u00edmek. Zpr\u00e1va, kter\u00e1 dorazila v 10:05 a byla smaz\u00e1na v 10:40, p\u0159ed dal\u0161\u00ed z\u00e1lohou, nebyla nikdy zachycena. \u010c\u00edm \u010dast\u011bji se z\u00e1lohuje, t\u00edm v\u00edc se toto okno zu\u017euje; nulov\u00e9 nen\u00ed nikdy.<\/li><li><strong>\u00da\u010del.<\/strong> Z\u00e1loha slou\u017e\u00ed k n\u00e1vratu zp\u011bt. Nenahrazuje archivaci na n\u011bkolik let, kter\u00e1 zpr\u00e1vy uchov\u00e1v\u00e1, aby je bylo mo\u017en\u00e9 p\u0159edlo\u017eit, a m\u00e1 vlastn\u00ed pravidla doby uchov\u00e1n\u00ed a p\u0159\u00edstupu.<\/li><\/ul><p>Zvl\u00e1\u0161tn\u00ed pozornost si zaslou\u017e\u00ed \u00famysln\u00e9 smaz\u00e1n\u00ed. Nespokojen\u00fd zam\u011bstnanec, kter\u00fd vypr\u00e1zdn\u00ed svou schr\u00e1nku, nebo \u00fato\u010dn\u00edk, kter\u00fd ovl\u00e1dl administr\u00e1torsk\u00fd \u00fa\u010det, m\u016f\u017ee zpr\u00e1vy smazat a pokusit se smazat i z\u00e1lohy. Proto m\u00e1 smysl z\u00e1loha, kterou b\u011bhem doby uchov\u00e1n\u00ed nem\u016f\u017ee nikdo zm\u011bnit, ani administr\u00e1tor e-mailov\u00e9ho syst\u00e9mu. P\u0159\u00edru\u010dka ANSSI o z\u00e1lohov\u00e1n\u00ed doporu\u010duje odd\u011blit z\u00e1lohovac\u00ed servery v r\u00e1mci administra\u010dn\u00edho syst\u00e9mu a vyz\u00fdv\u00e1 k prov\u011b\u0159en\u00ed mechanismu nem\u011bnnosti \u0159e\u0161en\u00ed typu WORM, m\u00edsto aby se \u010dlov\u011bk spol\u00e9hal na samotn\u00e9 slovo.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e1c6925 elementor-widget elementor-widget-text-editor\" data-id=\"e1c6925\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Nez\u00e1visl\u00e1 na serveru: co to znamen\u00e1<\/h2><p>Nez\u00e1visl\u00e1 z\u00e1loha existuje mimo e-mailov\u00fd syst\u00e9m, kter\u00fd chr\u00e1n\u00ed. Konkr\u00e9tn\u011b:<\/p><ul><li>je ulo\u017eena v jin\u00e9m syst\u00e9mu, nejl\u00e9pe na jin\u00e9m m\u00edst\u011b, aby ji incident v serverovn\u011b nezni\u010dil;<\/li><li>p\u0159ihla\u0161ovac\u00ed \u00fadaje, kter\u00fdmi se spravuje e-mailov\u00fd syst\u00e9m, k jej\u00edmu smaz\u00e1n\u00ed nesta\u010d\u00ed;<\/li><li>je \u0161ifrovan\u00e1, aby kopie nebyla druh\u00fdmi dve\u0159mi ke zpr\u00e1v\u00e1m;<\/li><li>je testovan\u00e1. ANSSI to formuluje jednodu\u0161e: z\u00e1lohy se mus\u00ed pravideln\u011b testovat. Z\u00e1loha, kter\u00e1 nebyla nikdy obnovena, z\u016fst\u00e1v\u00e1 hypot\u00e9zou.<\/li><\/ul><p>Tat\u00e1\u017e p\u0159\u00edru\u010dka doporu\u010duje pravidlo \u201e3-2-1\u201c, kter\u00e9 za\u010d\u00edn\u00e1 t\u0159emi odd\u011blen\u00fdmi kopiemi dat, a definuje offline z\u00e1lohu jako z\u00e1lohu na m\u00e9diu odpojen\u00e9m od jak\u00e9hokoli informa\u010dn\u00edho syst\u00e9mu. Tyto pojmy plat\u00ed pro po\u0161tu stejn\u011b jako pro soubory; jejich uplatn\u011bn\u00ed na dokumenty najdete v pr\u016fvodci <a href='\/cs\/verzovani-replikace-zalohovani-dokumentu\/'>verzov\u00e1n\u00ed, replikace a z\u00e1lohov\u00e1n\u00ed<\/a>.<\/p><p><strong>P\u0159\u00edklad.<\/strong> V kancel\u00e1\u0159i s 25 lidmi (hypotetick\u00fd p\u0159\u00edpad) spolupracovn\u00edk omylem sma\u017ee slo\u017eku klienta, vypr\u00e1zdn\u00ed ko\u0161 a v\u0161imne si toho a\u017e n\u00e1sleduj\u00edc\u00ed pond\u011bl\u00ed. Slo\u017eka pro obnoven\u00ed u\u017e neobsahuje nic u\u017eite\u010dn\u00e9ho. Z\u00e1loha z p\u0159edchoz\u00edho p\u00e1tku slo\u017eku obsahuje. Provozovatel ji obnov\u00ed do schr\u00e1nky; chyb\u00ed jen zpr\u00e1vy, kter\u00e9 dorazily a byly smaz\u00e1ny mezi dv\u011bma z\u00e1lohami.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-14e2bfd elementor-widget elementor-widget-text-editor\" data-id=\"14e2bfd\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Kdy\u017e server vypadne<\/h2><p>Elektronick\u00e1 po\u0161ta sn\u00e1\u0161\u00ed kr\u00e1tk\u00e9 v\u00fdpadky dob\u0159e. Odes\u00edlaj\u00edc\u00ed server, kter\u00fd se k va\u0161emu nespoj\u00ed nebo dostane do\u010dasnou chybu, ponech\u00e1 zpr\u00e1vu ve front\u011b a zkou\u0161\u00ed to znovu. Dokud v\u00fdpadek trv\u00e1 krat\u0161\u00ed dobu ne\u017e lh\u016fta, po kter\u00e9 odes\u00edlatel to vzd\u00e1 a kter\u00e1 se obvykle po\u010d\u00edt\u00e1 ve dnech, nic se neztrat\u00ed: po\u0161ta doraz\u00ed po obnoven\u00ed slu\u017eby. Pr\u016fvodce <a href='\/cs\/migrace-e-mailu-bez-preruseni\/'>migrace e-mailu bez p\u0159eru\u0161en\u00ed provozu<\/a> tento mechanismus podrobn\u011b popisuje. Filtra\u010dn\u00ed br\u00e1na um\u00edst\u011bn\u00e1 p\u0159ed e-mailov\u00fdm syst\u00e9mem hraje stejnou roli: p\u0159ijatou zpr\u00e1vu podr\u017e\u00ed, dokud server neodpov\u00ed.<\/p><p>U\u017eivatel\u00e9 vid\u00ed n\u011bco jin\u00e9ho: nefunguje webmail, telefony se nesynchronizuj\u00ed, nelze odes\u00edlat. Pr\u00e1v\u011b tuto dobu m\u011b\u0159\u00ed prvn\u00ed ukazatel.<\/p><div class=\"kly-def\"><p><strong>RTO<\/strong> (maxim\u00e1ln\u00ed p\u0159\u00edpustn\u00e1 doba p\u0159eru\u0161en\u00ed): c\u00edlov\u00e1 doba pro op\u011btovn\u00e9 uveden\u00ed slu\u017eby do provozu. <strong>RPO<\/strong> (maxim\u00e1ln\u00ed p\u0159\u00edpustn\u00e1 ztr\u00e1ta dat): mno\u017estv\u00ed dat, vyj\u00e1d\u0159en\u00e9 \u010dasem, jeho\u017e ztr\u00e1tu jste ochotni p\u0159ipustit, pokud je nutn\u00e9 \u00falo\u017ei\u0161t\u011b obnovit z posledn\u00ed z\u00e1lohy.<\/p><\/div><p>RPO se net\u00fdk\u00e1 po\u0161ty, kter\u00e1 \u010dek\u00e1 u odes\u00edlatel\u016f: ta doraz\u00ed po obnoven\u00ed slu\u017eby. T\u00fdk\u00e1 se zpr\u00e1v ji\u017e doru\u010den\u00fdch do schr\u00e1nek a \u00fakon\u016f u\u017eivatel\u016f od posledn\u00ed z\u00e1lohy pro p\u0159\u00edpad, \u017ee by bylo ztraceno samotn\u00e9 \u00falo\u017ei\u0161t\u011b. RPO krat\u0161\u00ed ne\u017e 2 hodiny znamen\u00e1, \u017ee by bylo nutn\u00e9 obnovit nejv\u00fd\u0161e dv\u011b hodiny t\u00e9to historie. Jde o c\u00edle: zeptejte se, jak se m\u011b\u0159\u00ed a testuj\u00ed.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c007803 elementor-widget elementor-widget-text-editor\" data-id=\"c007803\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Zm\u011bna serveru beze zm\u011bny dom\u00e9ny<\/h2><p>Dlouh\u00fd v\u00fdpadek, konec smlouvy nebo p\u0159evzet\u00ed poskytovatele mohou vynutit zm\u011bnu e-mailov\u00e9 slu\u017eby. Va\u0161e dom\u00e9na a adresy se nem\u011bn\u00ed: novou platformu ur\u010duje z\u00e1znam MX. Postup se soub\u011b\u017en\u00fdm provozem, pr\u016fchody kop\u00edrov\u00e1n\u00ed a souladem SPF, DKIM a DMARC je pops\u00e1n v pr\u016fvodci <a href='\/cs\/migrace-e-mailu-bez-preruseni\/'>migrace e-mailu bez p\u0159eru\u0161en\u00ed provozu<\/a>. Zde jej neopakujeme.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1d9854d elementor-widget elementor-widget-text-editor\" data-id=\"1d9854d\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>\u010cast\u00e9 dotazy<\/h2><h3>Nahrazuje redundance z\u00e1lohu?<\/h3><p>Ne. Redundance kop\u00edruje i smaz\u00e1n\u00ed. Chr\u00e1n\u00ed p\u0159ed poruchou hardwaru, ne p\u0159ed chybou ani \u00famysln\u00fdm smaz\u00e1n\u00edm.<\/p><h3>Ztrat\u00ed se zpr\u00e1va p\u0159ijat\u00e1 b\u011bhem v\u00fdpadku?<\/h3><p>Obvykle ne: odes\u00edlatel ji podr\u017e\u00ed a zkou\u0161\u00ed to znovu. Ztrat\u00ed se, jen pokud je trvale odm\u00edtnuta, nebo pokud v\u00fdpadek trv\u00e1 d\u00e9le ne\u017e lh\u016fta, po kter\u00e9 to odes\u00edlatel vzd\u00e1.<\/p><h3>Sta\u010d\u00ed t\u0159icet dn\u00ed z\u00e1loh?<\/h3><p>Pro n\u00e1vrat zp\u011bt po chyb\u011b \u010dasto ano. Pro uchov\u00e1n\u00ed zpr\u00e1v na n\u011bkolik let ne: to je \u00fakol archivace. Viz <a href='\/cs\/archivace-zprav\/'>archivace zpr\u00e1v<\/a>.<\/p><h3>Mus\u00ed b\u00fdt napaden\u00ed schr\u00e1nky odhaleno rychle?<\/h3><p>Ano, proto\u017ee doba uchov\u00e1n\u00ed b\u011b\u017e\u00ed. Ochrana na vstupu je \u00fakolem filtra\u010dn\u00ed br\u00e1ny; viz <a href='\/cs\/ochrana-stavajiciho-e-mailu\/'>ochrana e-mailov\u00e9ho syst\u00e9mu, kter\u00fd u\u017e m\u00e1te<\/a>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-917bbd9 kly-g-klytic elementor-widget elementor-widget-text-editor\" data-id=\"917bbd9\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Kde se nach\u00e1z\u00ed Klytic<\/h2><p>U Klytic Mail existuj\u00ed v\u0161echny t\u0159i s\u00edt\u011b a jsou odd\u011blen\u00e9.<\/p><ul><li><strong>Na stran\u011b u\u017eivatele<\/strong> umo\u017e\u0148uje slo\u017eka odstran\u011bn\u00fdch polo\u017eek obnovit smazan\u00e9 zpr\u00e1vy s\u00e1m a zdarma.<\/li><li><strong>Na stran\u011b slu\u017eby<\/strong> se e-mail z\u00e1lohuje ka\u017edou hodinu. Z\u00e1lohy jsou \u0161ifrovan\u00e9, uchov\u00e1vaj\u00ed se 30 dn\u00ed, replikuj\u00ed se na v\u00edce m\u00edst a jsou nem\u011bnn\u00e9: zapsanou z\u00e1lohu ji\u017e nelze zm\u011bnit ani smazat. Jsou nep\u0159etr\u017eit\u011b monitorov\u00e1ny a obnovy se testuj\u00ed ka\u017ed\u00fd m\u011bs\u00edc. Klytic se p\u0159itom op\u00edr\u00e1 o slu\u017eby WeDoBack, popsan\u00e9 na str\u00e1nce <a href='\/cs\/bezpecnost-a-zalohovani\/'>Bezpe\u010dnost a z\u00e1lohov\u00e1n\u00ed<\/a>.<\/li><li><strong>Na stran\u011b platformy<\/strong> jsou zve\u0159ejn\u011bn\u00fdmi c\u00edli obnoven\u00ed provozu do 4 hodin (RTO) a ztr\u00e1ta nejv\u00fd\u0161e 2 hodin dat (RPO). Klytic MTA, um\u00edst\u011bn\u00fd p\u0159ed e-mailov\u00fdm syst\u00e9mem, do\u010dasn\u011b a v \u0161ifrovan\u00e9 podob\u011b uchov\u00e1 zpr\u00e1vu, jej\u00ed\u017e c\u00edlov\u00fd server je nedostupn\u00fd.<\/li><\/ul><p>O obnovu zpr\u00e1vy, slo\u017eky nebo schr\u00e1nky se \u017e\u00e1d\u00e1 podpora, s uveden\u00edm dot\u010den\u00e9 polo\u017eky a p\u0159ibli\u017en\u00e9ho data. Je v cen\u011b v p\u0159\u00edpad\u011b poruchy slu\u017eby, \u00famysln\u00e9ho smaz\u00e1n\u00ed zam\u011bstnancem nebo \u00fa\u010dtu smazan\u00e9ho p\u0159\u00edli\u0161 brzy p\u0159i odchodu (nejv\u00fd\u0161e 3 \u017e\u00e1dosti m\u011bs\u00ed\u010dn\u011b), nebo \u00fatoku, k n\u011bmu\u017e do\u0161lo navzdory \u0159\u00e1dn\u011b chr\u00e1n\u011bn\u00fdm pracovn\u00edm stanic\u00edm. Po n\u00e1hodn\u00e9m smaz\u00e1n\u00ed, chybn\u00e9m \u00fakonu nebo pokud byly stanice nedostate\u010dn\u011b chr\u00e1n\u011bny, se \u0159e\u0161\u00ed placen\u00fdm po\u017eadavkem na podporu. Bezplatn\u00e1 slo\u017eka odstran\u011bn\u00fdch polo\u017eek z\u016fst\u00e1v\u00e1 prvn\u00ed mo\u017enost\u00ed. Postup je pops\u00e1n v praktick\u00e9m n\u00e1vodu <a href='\/cs\/obnoveni-zpravy-nebo-schranky\/'>obnova zpr\u00e1vy nebo schr\u00e1nky<\/a>.<\/p><p>Co nab\u00eddka nepokr\u00fdv\u00e1: samoobslu\u017enou obnovu u\u017eivatelem nad r\u00e1mec slo\u017eky odstran\u011bn\u00fdch polo\u017eek a uchov\u00e1n\u00ed z\u00e1lohou d\u00e9le ne\u017e 30 dn\u00ed. Pro uchov\u00e1n\u00ed zpr\u00e1v na n\u011bkolik let je k dispozici archivace pro z\u00e1konn\u00e9 \u00fa\u010dely jako dopln\u011bk.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dba20ea kly-g-disclaimer elementor-widget elementor-widget-text-editor\" data-id=\"dba20ea\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Tato str\u00e1nka popisuje obecn\u00fd r\u00e1mec. Platn\u00e9 jsou z\u00e1vazky uveden\u00e9 ve va\u0161\u00ed smlouv\u011b.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b57390c kly-g-sources elementor-widget elementor-widget-text-editor\" data-id=\"b57390c\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Zdroje<\/h2><p>Ov\u011b\u0159eno v \u0159\u00edjnu 2026.<\/p><ul><li>ANSSI, \u201eSauvegarde des syst\u00e8mes d\u2019information : les fondamentaux\u201c (Z\u00e1lohov\u00e1n\u00ed informa\u010dn\u00edch syst\u00e9m\u016f: z\u00e1klady, verze 1.1): definice offline z\u00e1lohy, pravidlo \u201e3-2-1\u201c, pravideln\u00e9 testov\u00e1n\u00ed z\u00e1loh, odd\u011blen\u00ed z\u00e1lohovac\u00edch server\u016f, prov\u011b\u0159en\u00ed mechanismu nem\u011bnnosti, vztah mezi PDMA a RPO, DMIA a RTO. <a href='https:\/\/messervices.cyber.gouv.fr\/documents-guides\/anssi_fondamentaux_sauvegarde_systemes_dinformation_v1.1.pdf' rel='noopener' target='_blank'>cyber.gouv.fr<\/a><\/li><li>Klytic, Bezpe\u010dnost a z\u00e1lohov\u00e1n\u00ed: frekvence, doba uchov\u00e1n\u00ed, \u0161ifrov\u00e1n\u00ed, replikace, nem\u011bnnost, m\u011bs\u00ed\u010dn\u00ed testy, c\u00edlov\u00e9 RTO a RPO, obnova e-mailu, slo\u017eky nebo schr\u00e1nky. <a href='https:\/\/www.klytic.com\/securite-sauvegarde\/' rel='noopener' target='_blank'>klytic.com<\/a><\/li><li>Klytic, \u010cast\u00e9 dotazy: hodinov\u00e9 z\u00e1lohov\u00e1n\u00ed mimo telefonii, c\u00edle obnovy, do\u010dasn\u00e9 uchov\u00e1n\u00ed slu\u017ebou Klytic MTA, kdy\u017e je c\u00edlov\u00fd server nedostupn\u00fd. <a href='https:\/\/www.klytic.com\/foire-aux-questions\/' rel='noopener' target='_blank'>klytic.com<\/a><\/li><li>Klytic, Migrace e-mailu bez p\u0159eru\u0161en\u00ed provozu: fronta odes\u00edlatel\u016f p\u0159i do\u010dasn\u00e9 chyb\u011b, role MX, soub\u011b\u017en\u00fd provoz. <a href='https:\/\/www.klytic.com\/migrer-messagerie-sans-interruption\/' rel='noopener' target='_blank'>klytic.com<\/a><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-445f341 e-con-full kly-g-aside e-flex e-con e-parent\" data-id=\"445f341\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-739a8ee elementor-widget elementor-widget-html\" data-id=\"739a8ee\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"html.default\">\n\t\t\t\t\t<nav class=\"kly-g-toc\" aria-label=\"Na t\u00e9to str\u00e1nce\"><p>Na t\u00e9to str\u00e1nce<\/p><ol><\/ol><\/nav>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8676c77 elementor-widget elementor-widget-text-editor\" data-id=\"8676c77\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<div class=\"kly-g-cta\"><h3>Pod\u00edvejte se na obnovu je\u0161t\u011b p\u0159ed podpisem<\/h3><p>B\u011bhem zku\u0161ebn\u00ed verze po\u017e\u00e1dejte o obnovu smazan\u00e9 zpr\u00e1vy: uvid\u00edte dobu, kdo jedn\u00e1 a kde se zpr\u00e1va znovu objev\u00ed.<\/p><p><a class=\"kly-g-btn\" href=\"\/cs\/zkusebni-verze-zdarma-na-30-dni\/\">Zah\u00e1jit zku\u0161ebn\u00ed verzi zdarma \u2192<\/a><\/p><p style=\"margin:0\"><a class=\"kly-g-btn ghost\" href=\"\/cs\/bezpecnost-a-zalohovani\/\">Bezpe\u010dnost a z\u00e1lohov\u00e1n\u00ed<\/a><\/p><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a4bb7fa e-con-full kly-g-related e-flex e-con e-parent\" data-id=\"a4bb7fa\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5fe6de8 elementor-widget elementor-widget-text-editor\" data-id=\"5fe6de8\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>P\u0159e\u010dt\u011bte si tak\u00e9<\/h2><div class=\"kly-g-grid\"><a class=\"kly-g-card\" href=\"\/cs\/obnoveni-zpravy-nebo-schranky\/\" style=\"--cat:#2563eb\"><span class=\"c\">Pou\u017e\u00edvat \u00b7 E-mail<\/span><span class=\"t\">Obnoven\u00ed zpr\u00e1vy nebo schr\u00e1nky<\/span><span class=\"q\">Odstran\u011bnou zpr\u00e1vu nejprve obnov\u00edte sami, bez poplatk\u016f, ze slo\u017eky odstran\u011bn\u00fdch polo\u017eek. Jinak ji podpora Klytic obnov\u00ed za 30 dn\u00ed, v cen\u011b nebo za poplatek.<\/span><span class=\"m\"><span>4 min \u010dten\u00ed<\/span><b>\u010c\u00edst \u2192<\/b><\/span><\/a><a class=\"kly-g-card\" href=\"\/cs\/verzovani-replikace-zalohovani-dokumentu\/\" style=\"--cat:#0d9488\"><span class=\"c\">Pochopit \u00b7 Dokumenty a spr\u00e1va dokument\u016f (DMS)<\/span><span class=\"t\">Verzov\u00e1n\u00ed, replikace a z\u00e1lohov\u00e1n\u00ed dokument\u016f<\/span><span class=\"q\">T\u0159i mechanismy, t\u0159i poruchy. Pro\u010d se syst\u00e9m spr\u00e1vy dokument\u016f, kter\u00fd u\u017e verzuje, mus\u00ed p\u0159esto z\u00e1lohovat, porucha po poru\u0161e.<\/span><span class=\"m\"><span>6 min \u010dten\u00ed<\/span><b>\u010c\u00edst \u2192<\/b><\/span><\/a><a class=\"kly-g-card\" href=\"\/cs\/ochrana-stavajiciho-e-mailu\/\" style=\"--cat:#dc2626\"><span class=\"c\">Pochopit \u00b7 Zabezpe\u010den\u00ed e-mail\u016f<\/span><span class=\"t\">Ochrana e-mailov\u00e9ho syst\u00e9mu, kter\u00fd u\u017e m\u00e1te<\/span><span class=\"q\">Microsoft 365, Google Workspace, Exchange: bezpe\u010dnostn\u00ed br\u00e1nu lze p\u0159idat beze zm\u011bny e-mailov\u00e9ho syst\u00e9mu. Co se m\u011bn\u00ed, kdo to nastavuje a omezen\u00ed.<\/span><span class=\"m\"><span>7 min \u010dten\u00ed<\/span><b>\u010c\u00edst \u2192<\/b><\/span><\/a><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-539316dd e-con e-atomic-element e-div-block-base e-default-div e-c9fd865-4a50 \" data-id=\"539316dd\" data-element_type=\"e-div-block\" data-e-type=\"e-div-block\" data-interaction-id=\"539316dd\" data-e-type=\"e-div-block\" data-id=\"539316dd\">\n    <div class=\"elementor-element elementor-element-4f79afcb e-con e-atomic-element e-div-block-base e-default-div e-4fa9fe-ce86 \" data-id=\"4f79afcb\" data-element_type=\"e-div-block\" data-e-type=\"e-div-block\" data-interaction-id=\"4f79afcb\" data-e-type=\"e-div-block\" data-id=\"4f79afcb\">\n    \t\t\t<p class=\"e-4dcf5c70-2ec7 e-paragraph-base e-default-p\" data-interaction-id=\"330a7a35\" data-e-type=\"widget\" data-id=\"330a7a35\">Uv\u00edtac\u00ed nab\u00eddka<\/p>\n\t\t\t\t\t<h2 data-interaction-id=\"56f1f7d5\" class=\"e-347faa43-4e20 e-heading-base e-default-h2\" data-e-type=\"widget\" data-id=\"56f1f7d5\">30 dn\u00ed zku\u0161ebn\u00ed verze zdarma a migrace s asistenc\u00ed<\/h2>\n\t\t\t\t\t<p class=\"e-7f6310da-1caa e-paragraph-base e-default-p\" data-interaction-id=\"2ce27288\" data-e-type=\"widget\" data-id=\"2ce27288\">Zku\u0161ebn\u00ed nab\u00eddka bez z\u00e1vazk\u016f. N\u00e1\u0161 poradce v\u00e1m zavol\u00e1, aby poznal va\u0161e pot\u0159eby a p\u0159ipravil va\u0161e prost\u0159ed\u00ed Klytic.<\/p>\n\t\t<div class=\"elementor-element elementor-element-35ea29a1 e-con e-atomic-element e-div-block-base e-default-div e-1cd48b22-e6da \" data-id=\"35ea29a1\" data-element_type=\"e-div-block\" data-e-type=\"e-div-block\" data-interaction-id=\"35ea29a1\" data-e-type=\"e-div-block\" data-id=\"35ea29a1\">\n    \t\t\t<a href=\"\/essai-gratuit\/\" target=\"_self\" class=\"e-4a7886e3-652d e-button-base e-default-a\" data-interaction-id=\"19bfa8f1\" data-e-type=\"widget\" data-id=\"19bfa8f1\">\n\t\ud83d\ude80 Zah\u00e1jit zku\u0161ebn\u00ed verzi zdarma\n<\/a>\n\t\t\t\t\t<a href=\"\/tarifs\/\" target=\"_self\" class=\"e-137e863d-dd0d e-button-base e-default-a\" data-interaction-id=\"326d82ab\" data-e-type=\"widget\" data-id=\"326d82ab\">\n\tZobrazit cen\u00edk\n<\/a>\n\t\t\n<\/div>\n\n<\/div>\n\n<\/div>\n\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"_seopress_titles_title":"Z\u00e1lohov\u00e1n\u00ed e-mailu a kontinuita provozu | Klytic","_seopress_titles_desc":"Smazan\u00e1 zpr\u00e1va, smazan\u00e1 schr\u00e1nka, nefunk\u010dn\u00ed server: co pokr\u00fdv\u00e1 ko\u0161, nez\u00e1visl\u00e1 z\u00e1loha a obnova provozu a co nepokr\u00fdvaj\u00ed.","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"Z\u00e1lohov\u00e1n\u00ed e-mailu a kontinuita provozu | Klytic","_seopress_social_fb_desc":"Smazan\u00e1 zpr\u00e1va, smazan\u00e1 schr\u00e1nka, nefunk\u010dn\u00ed server: co pokr\u00fdv\u00e1 ko\u0161, nez\u00e1visl\u00e1 z\u00e1loha a obnova provozu a co nepokr\u00fdvaj\u00ed.","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"Z\u00e1lohov\u00e1n\u00ed e-mailu a kontinuita provozu | Klytic","_seopress_social_twitter_desc":"Smazan\u00e1 zpr\u00e1va, smazan\u00e1 schr\u00e1nka, nefunk\u010dn\u00ed server: co pokr\u00fdv\u00e1 ko\u0161, nez\u00e1visl\u00e1 z\u00e1loha a obnova provozu a co nepokr\u00fdvaj\u00ed.","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"","_seopress_redirections_param":"","_seopress_redirections_type":0,"_seopress_analysis_target_kw":"","_seopress_news_disabled":"","_seopress_video_disabled":"","_seopress_video":[],"_seopress_pro_schemas_manual":[],"_seopress_pro_rich_snippets_disable_all":"","_seopress_pro_rich_snippets_disable":[],"_seopress_pro_schemas":[],"footnotes":""},"class_list":["post-7450","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/eu.klytic.com\/cs\/wp-json\/wp\/v2\/pages\/7450","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/eu.klytic.com\/cs\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/eu.klytic.com\/cs\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/eu.klytic.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/eu.klytic.com\/cs\/wp-json\/wp\/v2\/comments?post=7450"}],"version-history":[{"count":0,"href":"https:\/\/eu.klytic.com\/cs\/wp-json\/wp\/v2\/pages\/7450\/revisions"}],"wp:attachment":[{"href":"https:\/\/eu.klytic.com\/cs\/wp-json\/wp\/v2\/media?parent=7450"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}