{"id":423,"date":"2024-10-30T16:17:31","date_gmt":"2024-10-30T15:17:31","guid":{"rendered":"https:\/\/o-seznam.cz\/napoveda\/email\/?page_id=423"},"modified":"2025-06-02T09:17:29","modified_gmt":"2025-06-02T07:17:29","slug":"dns-zaznamy","status":"publish","type":"page","link":"https:\/\/o-seznam.cz\/napoveda\/email\/profi\/dns-zaznamy\/","title":{"rendered":"DNS z\u00e1znamy"},"content":{"rendered":"\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<p>DNS z\u00e1znamy ur\u010duj\u00ed, jak\u00e9 slu\u017eby b\u011b\u017e\u00ed na internetov\u00e9 dom\u00e9n\u011b. Zalo\u017een\u00edm DNS z\u00e1znamu p\u0159\u00edslu\u0161n\u00e9ho typu aktivujete slu\u017ebu&nbsp;a nastavujete jej\u00ed parametry. N\u011bkter\u00e9 typy pat\u0159\u00ed mezi z\u00e1kladn\u00ed a na sv\u00e9 dom\u00e9n\u011b je zcela jist\u011b budete pot\u0159ebovat.<\/p>\n\n\n\n<p>V r\u00e1mci e-mailov\u00e9 komunikace doporu\u010dujeme prim\u00e1rn\u011b nastavit SPF, DKIM a DMARC z\u00e1znam. Podrobn\u00e9 nastaven\u00ed t\u011bchto z\u00e1znam\u016f naleznete v <a href=\"https:\/\/o-seznam.cz\/napoveda\/email\/profi\/zaznamy-pro-autentifikaci-posty\/\" data-type=\"link\" data-id=\"https:\/\/o-seznam.cz\/napoveda\/email\/profi\/zaznamy-pro-autentifikaci-posty\/\">samostatn\u00e9m \u010dl\u00e1nku zde<\/a>.<\/p>\n\n\n\n<p>Pro zm\u011bnu DNS z\u00e1znam\u016f se p\u0159ihlaste spr\u00e1vcovsk\u00fdm \u00fa\u010dtem do <a href=\"https:\/\/emailprofi.seznam.cz\/\">Emailu Profi<\/a> a v detailu p\u0159\u00edslu\u0161n\u00e9 dom\u00e9ny otev\u0159ete z\u00e1lo\u017eku <strong>Zm\u011bna DNS<\/strong>.<\/p>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\"wp-block-heading\">Typy DNS z\u00e1znam\u016f<\/h2>\n<\/div>\n\n\n<nav class=\"menu-anchors\">\n<ul>\n\t<li><a href=\"#--a-aaaa-zaznam\">A a AAAA z\u00e1znam<\/a><\/li>\n<li><a href=\"#-caa-zaznam\">CAA z\u00e1znam<\/a><\/li>\n<li><a href=\"#-DS-zaznam\">DS z\u00e1znam<\/a><\/li>\n<li><a href=\"#-NS-zaznam\">NS z\u00e1znam<\/a><\/li>\n<li><a href=\"#-cname-zaznam\">CNAME z\u00e1znam<\/a><\/li>\n<li><a href=\"#-tlsa-zaznam\">TLSA z\u00e1znam<\/a><\/li>\n<li><a href=\"#-txt-zaznam\">TXT z\u00e1znam<\/a><\/li>\n<li><a href=\"#-srv-zaznam\">SRV z\u00e1znam<\/a><\/li>\n<li><a href=\"#-mx-zaznam\">MX z\u00e1znam<\/a><\/li>\n<\/ul>\n\n<\/nav>\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\"wp-block-heading\" id=\"--a-aaaa-zaznam\">A a AAAA z\u00e1znam<\/h2>\n\n\n\n<p>Slou\u017e\u00ed pro nasm\u011brov\u00e1n\u00ed dom\u00e9ny na konkr\u00e9tn\u00ed IP adresu. Zad\u00e1v\u00e1te do n\u011bj adresu serveru, na kter\u00e9m m\u00e1 dom\u00e9na obsah. Kdy\u017e se pokus\u00edte na dom\u00e9nu p\u0159istoupit, uveden\u00fd server je kontaktov\u00e1n a po\u017e\u00e1d\u00e1n o obsah pro p\u0159edm\u011btnou dom\u00e9nu. Z toho vypl\u00fdv\u00e1, \u017ee tento z\u00e1znam je kl\u00ed\u010dov\u00fd pro&nbsp;<strong>nasm\u011brov\u00e1n\u00ed dom\u00e9ny na va\u0161e webov\u00e9 str\u00e1nky<\/strong>.<br><br><strong>Validn\u00ed form\u00e1t<\/strong>: V\u017edy&nbsp;<strong>pouze IP adresa<\/strong>&nbsp;(pro A z\u00e1znam je to IPv4, AAAA z\u00e1znam slou\u017e\u00ed pro adresy IPv6).<br><strong>Kde z\u00edskat<\/strong>: Informace pro A a AAAA z\u00e1znam v\u00e1m mus\u00ed&nbsp;<strong>poskytnout hostingov\u00e1 spole\u010dnost<\/strong>&nbsp;(\u010di jin\u00fd poskytovatel slu\u017eby, na kterou dom\u00e9nu sm\u011brujete).<br><br>P\u0159\u00edklad (pouze&nbsp;<strong>uk\u00e1zka<\/strong>, tyto hodnoty nepou\u017e\u00edvejte):<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Dom\u00e9na<\/strong><\/td><td><strong>Typ<\/strong><\/td><td><strong>TTL<\/strong><\/td><td><strong>Data<\/strong><\/td><\/tr><tr><td>@<\/td><td>A<\/td><td>1800<\/td><td><strong>77.75.75.172<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\"wp-block-heading\" id=\"-caa-zaznam\">CAA z\u00e1znam<\/h2>\n\n\n\n<p>Up\u0159es\u0148uje,&nbsp;<strong>kter\u00e1 certifika\u010dn\u00ed autorita (CA) m\u016f\u017ee dom\u00e9n\u011b vystavit SSL certifik\u00e1t<\/strong>. \u00dakolem CAA je sn\u00ed\u017eit pravd\u011bpodobnost situace, \u017ee \u00fato\u010dn\u00edk pokou\u0161ej\u00edc\u00ed se z\u00edskat certifik\u00e1t pro va\u0161i dom\u00e9nu, jej \u00fasp\u011b\u0161n\u011b z\u00edsk\u00e1. Nepovolen\u00e9 certifika\u010dn\u00ed autority v CAA z\u00e1znamu \u017e\u00e1dost o certifik\u00e1t zam\u00edtnou. V z\u00e1znamu m\u016f\u017eete tak\u00e9 nastavit e-mailovou adresu, na kterou CA za\u0161le&nbsp;<strong>upozorn\u011bn\u00ed<\/strong>, pokud n\u011bkdo po\u017e\u00e1d\u00e1 o certifik\u00e1t k va\u0161\u00ed dom\u00e9n\u011b. Ve spojen\u00ed s projektem Certificate Transparency (celosv\u011btov\u00e1 datab\u00e1ze v\u0161ech ve\u0159ejn\u011b vydan\u00fdch certifik\u00e1t\u016f, lze prohl\u00e9d\u00e1vat nap\u0159. p\u0159es Certificate Transparency Monitoring od Facebooku nebo web crt.sh) pak umo\u017e\u0148uje zjistit, pokud se n\u011bkdo \u00fasp\u011b\u0161n\u011b \u010di ne\u00fasp\u011b\u0161n\u011b pokus\u00ed o z\u00edsk\u00e1n\u00ed certifik\u00e1tu k va\u0161\u00ed dom\u00e9n\u011b.<br><br><strong>Validn\u00ed form\u00e1t<\/strong>: Struktura z\u00e1znamu je d\u00e1na standardy RFC a je fixn\u00ed<br><strong>Kde z\u00edskat<\/strong>: Z\u00e1znam m\u016f\u017eete sami sestvavit nebo vyu\u017e\u00edt online CAA gener\u00e1tor, nap\u0159.&nbsp;<a class=\"is-style-link-external\" href=\"https:\/\/sslmate.com\/caa\/\" target=\"_blank\" rel=\"noreferrer noopener\">gener\u00e1tor od SSLmate.com<\/a><br><br>P\u0159\u00edklad (pouze&nbsp;<strong>uk\u00e1zka<\/strong>&nbsp;mo\u017en\u00e9ho nastaven\u00ed): Vydat certifik\u00e1t m\u016f\u017ee pouze CA Let&#8217;s Encrypt<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Dom\u00e9na<\/strong><\/td><td><strong>Typ<\/strong><\/td><td><strong>TTL<\/strong><\/td><td><strong>Data<\/strong><\/td><\/tr><tr><td>@<\/td><td>CAA<\/td><td>1800<\/td><td><strong>0 issue &#8222;letsencrypt.org&#8220;<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\"wp-block-heading\" id=\"-DS-zaznam\">DS z\u00e1znam<\/h2>\n\n\n\n<p>Byl zaveden se vznikem protokolu&nbsp;<strong>DNSSEC&nbsp;<\/strong>pro zabezpe\u010den\u00ed dom\u00e9ny. DNSSEC vytv\u00e1\u0159\u00ed syst\u00e9m zaji\u0161\u0165uj\u00edc\u00ed, \u017ee p\u0159i p\u0159\u00edstupu na dom\u00e9nu obdr\u017e\u00edme odpov\u011b\u010f od autoritativn\u00edho DNS serveru dan\u00e9 dom\u00e9ny a ne od jin\u00e9ho serveru, jeho\u017e odpov\u011b\u010f by n\u00e1m mohla b\u00fdt podsunuta. Existuje toti\u017e hrozba, \u017ee p\u0159i p\u0159\u00edstupu na vybran\u00e9 webov\u00e9 str\u00e1nky by n\u00e1s mohl hypotetick\u00fd \u00fato\u010dn\u00edk pomoc\u00ed fale\u0161n\u00e9 odpov\u011bdi z DNS nasm\u011b\u0159ovat jinam a zobrazovat n\u00e1m sv\u016fj obsah (nap\u0159. podvodnou str\u00e1nku nam\u00edsto origin\u00e1ln\u00ed str\u00e1nky pro p\u0159ihl\u00e1\u0161en\u00ed do slu\u017eby atd.). DS z\u00e1znam v DNS obsahuje otisk ve\u0159ejn\u00e9ho kl\u00ed\u010de ulo\u017een\u00e9ho v z\u00e1znamu DNSKEY (dal\u0161\u00ed DNS z\u00e1znam souvisej\u00edc\u00ed s DNSSEC). Pomoc\u00ed t\u011bchto z\u00e1znam\u016f vznik\u00e1 &#8222;\u0159et\u011bz d\u016fv\u011bry&#8220;, kter\u00fd umo\u017e\u0148uje zajistit autoritativn\u00ed odpov\u011bdi z DNS z\u00f3ny.<br><br><strong>Validn\u00ed form\u00e1t<\/strong>: Struktura z\u00e1znamu je d\u00e1na standardy RFC a je fixn\u00ed.<br><strong>Kde z\u00edskat<\/strong>: Informace z\u00edsk\u00e1te od provozovatele va\u0161eho DNS hostingu.<\/p>\n\n\n\n<p>P\u0159\u00edklad (pouze&nbsp;<strong>uk\u00e1zka<\/strong>, tyto hodnoty nepou\u017e\u00edvejte):<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Dom\u00e9na<\/strong><\/td><td><strong>Typ<\/strong><\/td><td><strong>TTL<\/strong><\/td><td><strong>Data<\/strong><\/td><\/tr><tr><td>@<\/td><td>DS<\/td><td>1800<\/td><td><strong>2371 13 2 1F87CB5473E36VB0875318C42<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\"wp-block-heading\" id=\"-NS-zaznam\">NS z\u00e1znam<\/h2>\n\n\n\n<p>Nameservery, jinak \u0159e\u010deno DNS servery. T\u00edmto z\u00e1znamem \u0159\u00edk\u00e1te, kter\u00fd server dom\u00e9n\u011b spravuje DNS z\u00e1znamy. M\u00e1te-li dom\u00e9nu, jej\u00ed\u017e registr\u00e1torem je Seznam.cz, NS z\u00e1znamy povedou na&nbsp;<em>ams.emailprofi.cz&nbsp;<\/em>a&nbsp;<em>ans.emailprofi.cz<\/em>.&nbsp;<strong>NS z\u00e1znamy dom\u00e9ny u n\u00e1s nelze upravovat<\/strong>, je mo\u017en\u00e9 p\u0159id\u00e1vat pouze NS z\u00e1znamy pro tzv. subdom\u00e9ny.<br><br><strong>Validn\u00ed form\u00e1t<\/strong>: V\u017edy pouze n\u00e1zev hostitele (nap\u0159.&nbsp;<em>domena.cz.<\/em>&nbsp;nebo&nbsp;<em>neco.domena.cz.<\/em>)<br><strong>Kde z\u00edskat<\/strong>: Informace z\u00edsk\u00e1te od provozovatele va\u0161eho DNS hostingu.<br><br>&nbsp;<strong>Pozor!<\/strong>&nbsp;Z\u00e1znam NS mus\u00ed b\u00fdt ukon\u010den te\u010dkou!&nbsp;<br><br>P\u0159\u00edklad (pouze&nbsp;<strong>uk\u00e1zka<\/strong>, tyto hodnoty nepou\u017e\u00edvejte): Dom\u00e9n\u011b&nbsp;<em>nejakejmeno.domena.cz<\/em>&nbsp;spravuje DNS z\u00e1znamy&nbsp;<em>jinydnsserver.net<\/em><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Dom\u00e9na<\/strong><\/td><td><strong>Typ<\/strong><\/td><td><strong>TTL<\/strong><\/td><td><strong>Data<\/strong><\/td><\/tr><tr><td>nejakejmeno<\/td><td>NS<\/td><td>1800<\/td><td><strong>jinydnsserver.net.<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\"wp-block-heading\" id=\"-cname-zaznam\">CNAME z\u00e1znam<\/h2>\n\n\n\n<p>Tento typ z\u00e1znamu m\u00e1 na starosti nasm\u011brov\u00e1n\u00ed jedn\u00e9 dom\u00e9ny na druhou. P\u0159i p\u0159\u00edstupu na takto nasm\u011brovanou dom\u00e9nu dojde k p\u0159elo\u017een\u00ed dom\u00e9ny na IP adresu c\u00edlov\u00e9ho serveru. Nej\u010dast\u011bj\u0161i se tento z\u00e1znam vyu\u017e\u00edv\u00e1 k tomu, aby adresa webu&nbsp;<em>www.domena.cz<\/em>&nbsp;m\u011bla stejn\u00fd obsah jako adresa&nbsp;<em>domena.cz<\/em>.<br><br><strong>Validn\u00ed form\u00e1t<\/strong>: V\u017edy pouze n\u00e1zev hostitele (nap\u0159.&nbsp;<em>domena.cz.<\/em>&nbsp;nebo&nbsp;<em>neco.domena.cz.<\/em>)<br><strong>Kde z\u00edskat<\/strong>: Informace v\u00e1m mus\u00ed&nbsp;<strong>poskytnout hostingov\u00e1 spole\u010dnost<\/strong>&nbsp;(\u010di jin\u00fd poskytovatel slu\u017eby, na kterou dom\u00e9nu sm\u011brujete).<br><br>&nbsp;<strong>Pozor!<\/strong>&nbsp;Z\u00e1znam CNAME mus\u00ed b\u00fdt ukon\u010den te\u010dkou!&nbsp;<br><br>P\u0159\u00edklad (pouze&nbsp;<strong>uk\u00e1zka<\/strong>, tyto hodnoty nepou\u017e\u00edvejte): Pro adresu www.domena.cz se maj\u00ed pou\u017e\u00edt DNS z\u00e1znamy dom\u00e9ny domena.cz (t\u00edm je na obou stejn\u00fd obsah, nap\u0159. webov\u00e1 str\u00e1nka)<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Dom\u00e9na<\/strong><\/td><td><strong>Typ<\/strong><\/td><td><strong>TTL<\/strong><\/td><td><strong>Data<\/strong><\/td><\/tr><tr><td>www<\/td><td>CNAME<\/td><td>1800<\/td><td><strong>domena.cz.<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\"wp-block-heading\" id=\"-tlsa-zaznam\">TLSA z\u00e1znam<\/h2>\n\n\n\n<p>Byl zaveden v r\u00e1mci protokolu&nbsp;<strong>DANE<\/strong>, kter\u00fd m\u00e1 za c\u00edl zv\u00fd\u0161it zabezpe\u010den\u00ed dom\u00e9ny, a to ov\u011b\u0159ov\u00e1n\u00edm p\u016fvodu SSL cetifik\u00e1tu. Princip je ten, \u017ee do DNS z\u00e1znam\u016f&nbsp;dom\u00e9ny uvedeme informace o na\u0161em SSL certifik\u00e1tu. Pokud by tak na cest\u011b mezi klientem (n\u00e1v\u0161t\u011bvn\u00edkem) a serverem do\u0161lo k pozm\u011bn\u011bn\u00ed \u010di podvr\u017een\u00ed certifik\u00e1tu, porovn\u00e1n\u00ed TLSA z\u00e1znamu v DNS s certifik\u00e1tem to odhal\u00ed. DANE lze vyu\u017e\u00edt pouze na dom\u00e9n\u00e1ch zabezpe\u010den\u00fdch&nbsp;protokolem&nbsp;<strong>DNSSEC<\/strong>&nbsp;(kter\u00fd zaji\u0161\u0165uje, \u017ee informace z DNS jsou d\u016fv\u011bryhodn\u00e9).<br><br><strong>Validn\u00edm form\u00e1t<\/strong>: Struktura z\u00e1znamu je d\u00e1na standardy RFC a je fixn\u00ed<br><strong>Kde z\u00edskat<\/strong>: Lze vyu\u017e\u00edt online TLSA gener\u00e1tor, nap\u0159.&nbsp;<a class=\"is-style-link-external\" href=\"https:\/\/ssl-tools.net\/tlsa-generator\" target=\"_blank\" rel=\"noreferrer noopener\">gener\u00e1tor od SSLtools.net<\/a><br><br>P\u0159\u00edklad (pouze&nbsp;<strong>uk\u00e1zka<\/strong>, tyto hodnoty nepou\u017e\u00edvejte):<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Dom\u00e9na<\/strong><\/td><td><strong>Typ<\/strong><\/td><td><strong>TTL<\/strong><\/td><td><strong>Data<\/strong><\/td><\/tr><tr><td>_443._tcp.tls-host<\/td><td>TLSA<\/td><td>1800<\/td><td><strong>3 1 1 0D6FCE13243AA7<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><br>443&nbsp;= port,&nbsp;tcp&nbsp;= protokol,&nbsp;3&nbsp;= pou\u017eit\u00ed certifik\u00e1tu,&nbsp;1&nbsp;= selektor,&nbsp;1&nbsp;= typ shody,&nbsp;0D6FCE13243AA7&nbsp;= data pro porovn\u00e1n\u00ed<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\"wp-block-heading\" id=\"-txt-zaznam\">TXT z\u00e1znam<\/h2>\n\n\n\n<p>Lze do nich zadat libovoln\u00fd textov\u00fd \u0159et\u011bzec. V n\u011bkter\u00fdch slu\u017eb\u00e1ch m\u016f\u017eete b\u00fdt po\u017e\u00e1d\u00e1ni, abyste do TXT z\u00e1znamu um\u00edstili unik\u00e1tn\u00ed k\u00f3d, \u010d\u00edm\u017e prok\u00e1\u017eete, \u017ee m\u00e1te dom\u00e9nu pod svou spr\u00e1vou. Do TXT z\u00e1znamu se ukl\u00e1daj\u00ed parametry n\u011bkter\u00fdch slu\u017eeb, mj. k&nbsp;SPF,&nbsp;DKIM&nbsp;\u010di&nbsp;DMARC.<br><br><strong>Validn\u00ed form\u00e1t<\/strong>: Libovoln\u00fd z\u00e1pis dle protokolu \u010di slu\u017eby, kterou nastavujete. Pro SPF, DKIM a DMARC je z\u00e1pis d\u00e1n standardy RFC a je fixn\u00ed.<br><strong>Kde z\u00edskat<\/strong>: Z\u00e1znamy pro&nbsp;SPF,&nbsp;DKIM&nbsp;\u010di&nbsp;DMARC&nbsp;m\u016f\u017eete sestavit sami nebo vyu\u017e\u00edt online gener\u00e1tory. Jinak v\u00e1m z\u00e1pis zpravidla poskytne&nbsp;<strong>provozovatel slu\u017eby, kterou nastavujete<\/strong>.<br><br>P\u0159\u00edklad (pouze&nbsp;<strong>uk\u00e1zka<\/strong>, tyto hodnoty nepou\u017e\u00edvejte): Nastaven\u00ed SPF<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Dom\u00e9na<\/strong><\/td><td><strong>Typ<\/strong><\/td><td><strong>TTL<\/strong><\/td><td><strong>Data<\/strong><\/td><\/tr><tr><td>@<\/td><td>TXT<\/td><td>1800<\/td><td><strong>v=spf1 include:spf.domena.cz -all<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\"wp-block-heading\" id=\"-srv-zaznam\">SRV z\u00e1znam<\/h2>\n\n\n\n<p>Slou\u017e\u00ed k up\u0159esn\u011bn\u00ed informac\u00ed o dostupn\u00fdch slu\u017eb\u00e1ch na dom\u00e9n\u011b. Vyu\u017e\u00edv\u00e1 se pro n\u011bkter\u00e9 internetov\u00e9 protokoly, nap\u0159.&nbsp;<strong>XMPP<\/strong>&nbsp;(internetov\u00e1 komunikace),&nbsp;<strong>SIP<\/strong>&nbsp;(internetov\u00e1 telefonie) nebo&nbsp;<strong>LDAP<\/strong>&nbsp;(p\u0159\u00edstup k dat\u016fm na adres\u00e1\u0159ov\u00e9m&nbsp;serveru) a \u0159ad\u011b aplika\u010dn\u00edch \u010di hern\u00edch server\u016f. Do z\u00e1znamu se nastavuj\u00ed parametry sm\u011brov\u00e1n\u00ed na c\u00edlov\u00e9ho hostitele a port.&nbsp;<br><br><strong>Validn\u00ed form\u00e1t<\/strong>: Struktura z\u00e1znamu je d\u00e1na standardy RFC a je fixn\u00ed.<br><strong>Kde z\u00edskat<\/strong>: Informace v\u00e1m&nbsp;<strong>poskytne&nbsp;provozovatel slu\u017eby, kterou nastavujete<\/strong>.<br><br>&nbsp;<strong>Pozor!<\/strong>&nbsp;Z\u00e1znam SRV mus\u00ed b\u00fdt ukon\u010den te\u010dkou!&nbsp;<br><br>P\u0159\u00edklad (pouze&nbsp;<strong>uk\u00e1zka<\/strong>, tyto hodnoty nepou\u017e\u00edvejte):<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Dom\u00e9na<\/strong><\/td><td><strong>Typ<\/strong><\/td><td><strong>TTL<\/strong><\/td><td><strong>Data<\/strong><\/td><\/tr><tr><td>_sluzba._tcp<\/td><td>SRV<\/td><td>1800<\/td><td><strong>10 20 5060 jina.domena.cz.<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><br>sluzba&nbsp;= libovoln\u00fd n\u00e1zev slu\u017eby,&nbsp;tcp&nbsp;= protokol,&nbsp;10&nbsp;= priorita,&nbsp;20&nbsp;= v\u00e1ha,&nbsp;5060&nbsp;= port,&nbsp;jina.domena.cz&nbsp;= c\u00edlov\u00fd hostitel<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\"wp-block-heading\" id=\"-mx-zaznam\">MX z\u00e1znam<\/h2>\n\n\n\n<p>Tyto z\u00e1znamy ur\u010duj\u00ed, na jak\u00e9 po\u0161tovn\u00ed servery je sm\u011brov\u00e1na po\u0161ta zaslan\u00e1 na dom\u00e9nu. Tyto po\u0161tovn\u00ed servery pak zpr\u00e1vy d\u00e1le zpracov\u00e1vaj\u00ed. M\u00e1te-li dom\u00e9nu u n\u00e1s v Email Profi, tyto z\u00e1znamy nem\u016f\u017eete m\u011bnit, po\u0161tu budou v\u017edy zpracov\u00e1vat na\u0161e servery. Pot\u0159ebujete-li zm\u011bnit e-mailov\u00e9ho poskytovatele, dom\u00e9nu m\u016f\u017eete&nbsp;p\u0159ev\u00e9st k jin\u00e9mu registr\u00e1torovi.<br><br><strong>Validn\u00ed form\u00e1t<\/strong>: Struktura z\u00e1znamu je d\u00e1na standardy RFC a je fixn\u00ed.<br><strong>Kde z\u00edskat<\/strong>: Informace v\u00e1m mus\u00ed&nbsp;<strong>poskytnout provozovatel slu\u017eby, kterou nastavujete<\/strong>&nbsp;(v\u00e1\u0161 e-mailov\u00fd hosting).<br><br>&nbsp;<strong>Pozor!<\/strong>&nbsp;Z\u00e1znam MX mus\u00ed b\u00fdt ukon\u010den te\u010dkou!&nbsp;<br><br>P\u0159\u00edklad (pouze&nbsp;<strong>uk\u00e1zka<\/strong>, tyto hodnoty nepou\u017e\u00edvejte):<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Dom\u00e9na<\/strong><\/td><td><strong>Typ<\/strong><\/td><td><strong>TTL<\/strong><\/td><td><strong>Data<\/strong><\/td><\/tr><tr><td>@<\/td><td>MX<\/td><td>1800<\/td><td><strong>10 postovni.server1.cz.<\/strong><\/td><\/tr><tr><td>@<\/td><td>MX<\/td><td>1800<\/td><td><strong>20 postovni.server2.cz.<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>DNS z\u00e1znamy ur\u010duj\u00ed, jak\u00e9 slu\u017eby b\u011b\u017e\u00ed na internetov\u00e9 dom\u00e9n\u011b. Zalo\u017een\u00edm DNS z\u00e1znamu p\u0159\u00edslu\u0161n\u00e9ho typu aktivujete slu\u017ebu&nbsp;a nastavujete jej\u00ed parametry. N\u011bkter\u00e9 typy pat\u0159\u00ed mezi z\u00e1kladn\u00ed a na sv\u00e9 dom\u00e9n\u011b je zcela jist\u011b budete pot\u0159ebovat. V r\u00e1mci e-mailov\u00e9 komunikace doporu\u010dujeme prim\u00e1rn\u011b nastavit SPF, DKIM a DMARC z\u00e1znam. Podrobn\u00e9 nastaven\u00ed t\u011bchto z\u00e1znam\u016f naleznete v samostatn\u00e9m \u010dl\u00e1nku zde. Pro [&hellip;]<\/p>\n","protected":false},"author":13,"featured_media":0,"parent":379,"menu_order":40,"comment_status":"closed","ping_status":"closed","template":"page-sidemenu","meta":{"_acf_changed":false,"_relevanssi_hide_post":"","_relevanssi_hide_content":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"","_relevanssi_noindex_reason":"","footnotes":""},"page_category":[12],"page_tag":[],"service_status_category":[],"class_list":["post-423","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/o-seznam.cz\/napoveda\/email\/wp-json\/wp\/v2\/pages\/423","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/o-seznam.cz\/napoveda\/email\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/o-seznam.cz\/napoveda\/email\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/o-seznam.cz\/napoveda\/email\/wp-json\/wp\/v2\/users\/13"}],"replies":[{"embeddable":true,"href":"https:\/\/o-seznam.cz\/napoveda\/email\/wp-json\/wp\/v2\/comments?post=423"}],"version-history":[{"count":18,"href":"https:\/\/o-seznam.cz\/napoveda\/email\/wp-json\/wp\/v2\/pages\/423\/revisions"}],"predecessor-version":[{"id":1528,"href":"https:\/\/o-seznam.cz\/napoveda\/email\/wp-json\/wp\/v2\/pages\/423\/revisions\/1528"}],"up":[{"embeddable":true,"href":"https:\/\/o-seznam.cz\/napoveda\/email\/wp-json\/wp\/v2\/pages\/379"}],"wp:attachment":[{"href":"https:\/\/o-seznam.cz\/napoveda\/email\/wp-json\/wp\/v2\/media?parent=423"}],"wp:term":[{"taxonomy":"page_category","embeddable":true,"href":"https:\/\/o-seznam.cz\/napoveda\/email\/wp-json\/wp\/v2\/page_category?post=423"},{"taxonomy":"page_tag","embeddable":true,"href":"https:\/\/o-seznam.cz\/napoveda\/email\/wp-json\/wp\/v2\/page_tag?post=423"},{"taxonomy":"service_status_category","embeddable":true,"href":"https:\/\/o-seznam.cz\/napoveda\/email\/wp-json\/wp\/v2\/service_status_category?post=423"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}