{"id":428,"date":"2023-01-27T15:05:28","date_gmt":"2023-01-27T15:05:28","guid":{"rendered":"https:\/\/www.smtpsoftware.com\/?p=428"},"modified":"2023-02-23T14:17:00","modified_gmt":"2023-02-23T14:17:00","slug":"free-smtp-server-without-authentication","status":"publish","type":"post","link":"https:\/\/www.smtpsoftware.com\/cs\/free-smtp-server-without-authentication\/","title":{"rendered":"Bezplatn\u00fd server SMTP bez ov\u011b\u0159ov\u00e1n\u00ed \u0158e\u0161en\u00ed \u010d. 1!"},"content":{"rendered":"

Sly\u0161\u00edme v\u00e1s, je to n\u011bco, na co se n\u00e1s pt\u00e1te st\u00e1le dokola. \"nev\u00edte o n\u011bjak\u00e9m bezplatn\u00e9m serveru SMTP bez ov\u011b\u0159ov\u00e1n\u00ed, kter\u00fd bych mohl pou\u017e\u00edt?\"<\/strong>\u00a0 Kdysi jsme sami provozovali n\u011bkolik server\u016f, kter\u00e9 byly takto nakonfigurov\u00e1ny a umo\u017e\u0148ovaly otev\u0159en\u00e9 p\u0159enosy, ale nikdy nevydr\u017eely p\u0159\u00edli\u0161 dlouho. Jakmile se tento typ serveru stane v\u0161eobecn\u011b zn\u00e1m\u00fdm, za\u010dne se pou\u017e\u00edvat a zneu\u017e\u00edvat do t\u00e9 m\u00edry, \u017ee se p\u0159estane doru\u010dovat po\u0161ta, objev\u00ed se na v\u0161ech \u010dern\u00fdch listin\u00e1ch a up\u0159\u00edmn\u011b \u0159e\u010deno je jeho pou\u017e\u00edv\u00e1n\u00ed 100% zbyte\u010dn\u00e9. Usilovn\u011b jsme se sna\u017eili naj\u00edt \u0159e\u0161en\u00ed, kter\u00e9 bude vyhovovat v\u011bt\u0161in\u011b skute\u010dn\u00fdch p\u0159\u00edpad\u016f pou\u017eit\u00ed, a p\u0159i\u0161li jsme s n\u011b\u010d\u00edm, co se v\u00e1m, jak douf\u00e1me, bude l\u00edbit.<\/p>\n

<\/p>\n

Ude\u0159te m\u011b s podrobnostmi o tomto bezplatn\u00e9m serveru SMTP bez ov\u011b\u0159ov\u00e1n\u00ed<\/h2>\n

\"Bezplatn\u00fdR\u00e1di bychom, ale jak jsme nazna\u010dili v\u00fd\u0161e, u\u017e to neexistuje. Co pot\u0159ebujete, je bezplatn\u00fd SMTP server s nejsiln\u011bj\u0161\u00edmi mo\u017en\u00fdmi autentiza\u010dn\u00edmi detaily, kter\u00fd je ochoten poskytnout v\u00e1m autentiza\u010dn\u00ed \u00fadaje zdarma. Po\u017eadov\u00e1n\u00edm autentizace to znamen\u00e1, \u017ee kdokoli, kdo nevyhovuje tomu, jak by m\u011bl b\u00fdt pou\u017eit jednoduch\u00fd server protokolu pro p\u0159enos po\u0161ty, tj. spam, m\u016f\u017ee b\u00fdt rychle odstran\u011bn, tak\u017ee integrita a reputace serveru jsou robustn\u00ed. Pokud m\u00e1te z\u00e1jem o doru\u010den\u00ed va\u0161eho e-mailu, a\u0165 u\u017e jde o 1 e-mail nebo 10 000 zpr\u00e1v, pak by to m\u011bla b\u00fdt va\u0161e priorita \u010d\u00edslo 1! Doslova nem\u00e1 smysl pos\u00edlat spoustu e-mail\u016f, pokud \u017e\u00e1dn\u00fd z nich nen\u00ed doru\u010den.<\/p>\n

Jak\u00e1 je v\u00fdhoda absence ov\u011b\u0159ov\u00e1n\u00ed? Pro ka\u017ed\u00e9ho, kdo chce pou\u017e\u00edvat server SMTP z opravdov\u00fdch d\u016fvod\u016f, opravdu \u017e\u00e1dn\u00e1 nen\u00ed. Jedin\u00fd dal\u0161\u00ed p\u0159\u00edpad pou\u017eit\u00ed, kter\u00fd n\u00e1s napad\u00e1, je, \u017ee by v\u00fdvoj\u00e1\u0159 softwaru nebo program\u00e1tor pou\u017e\u00edval opravdu starou knihovnu SMTP v n\u011bjak\u00e9m star\u0161\u00edm softwaru a sna\u017eil se ji aktualizovat. N\u011bkter\u00e9 z t\u011bchto velmi star\u00fdch knihoven nepodporuj\u00ed ov\u011b\u0159ov\u00e1n\u00ed SMTP (RFC 2821<\/a> podrobn\u011b vysv\u011btluje), a tak nalezen\u00ed serveru bez ov\u011b\u0159ov\u00e1n\u00ed m\u016f\u017ee b\u00fdt jedin\u00fdm zp\u016fsobem, jak udr\u017eet tento star\u0161\u00ed software v chodu, mus\u00ed to b\u00fdt v\u0161ak docela vz\u00e1cn\u00e9? Dal\u0161\u00ed p\u0159\u00edpad pou\u017eit\u00ed, o kter\u00e9m v\u00edme, proto\u017ee jsme se osobn\u011b pod\u00edleli na tom, \u017ee lid\u00e9 hledali bezplatn\u00fd server SMTP bez ov\u011b\u0159ov\u00e1n\u00ed, se t\u00fdkal n\u011bkter\u00fdch star\u0161\u00edch fax\u016f (existuje n\u011bco jako nestar\u0161\u00ed fax?? :)). N\u011bkter\u00e9 faxy maj\u00ed intern\u00ed funkci, kter\u00e1 umo\u017e\u0148uje odes\u00edl\u00e1n\u00ed p\u0159\u00edchoz\u00edch zpr\u00e1v e-mailem p\u0159\u00edmo p\u0159\u00edjemci, mnoho z nich vy\u017eaduje pou\u017eit\u00ed serveru SMTP t\u0159et\u00ed strany a n\u011bkter\u00e9 nemaj\u00ed mo\u017enost zadat autentiza\u010dn\u00ed \u00fadaje. To je 1 dobr\u00fd d\u016fvod pro hled\u00e1n\u00ed bezplatn\u00e9ho serveru SMTP bez ov\u011b\u0159ov\u00e1n\u00ed. Op\u011bt je to docela v\u00fdklenek. Podle na\u0161ich zku\u0161enost\u00ed v\u011bt\u0161ina hledaj\u00edc\u00edch, kte\u0159\u00ed trvaj\u00ed na serveru bez autentizace, chce pouze SPAMovat, a v takov\u00e9m p\u0159\u00edpad\u011b nen\u00ed p\u0159\u00ednosn\u00e9 je nasm\u011brovat spr\u00e1vn\u00fdm sm\u011brem.<\/p>\n

Kone\u010dn\u00fd server SMTP pro 99% p\u0159\u00edpad\u016f pou\u017eit\u00ed<\/h2>\n

Co kdybychom \u0159ekli, \u017ee existuje bezplatn\u00fd server SMTP, kter\u00fd:-<\/p>\n

    \n
  1. Lze pou\u017e\u00edt s v\u00edce e-mailov\u00fdmi adresami bez probl\u00e9m\u016f, tj. m\u016f\u017eete pou\u017e\u00edt stejn\u00fd SMTP pro odes\u00edl\u00e1n\u00ed p\u0159es v\u00edce adres.<\/li>\n
  2. Uk\u00e1zalo se, \u017ee je mo\u017en\u00e9 jej pou\u017e\u00edvat glob\u00e1ln\u011b bez probl\u00e9m\u016f, tj. ji\u017e \u017e\u00e1dn\u00e9 probl\u00e9my s poskytovateli internetov\u00fdch slu\u017eeb.<\/li>\n
  3. Uk\u00e1zalo se, \u017ee je p\u0159\u00e1telsk\u00e9 k faxov\u00e9mu p\u0159\u00edstroji\/\u017e\u00e1dn\u00e9mu probl\u00e9mu s ov\u011b\u0159ov\u00e1n\u00edm, a na po\u017e\u00e1d\u00e1n\u00ed m\u016f\u017ee poskytnout \u0159e\u0161en\u00ed.<\/li>\n
  4. M\u00e1 v\u00fdjime\u010dnou pov\u011bst v oblasti doru\u010dov\u00e1n\u00ed, tj. \u017e\u00e1dn\u00e9 automatick\u00e9 ozna\u010dov\u00e1n\u00ed jako SPAM nebo odskakov\u00e1n\u00ed e-mail\u016f.<\/li>\n
  5. Poskytuje v\u00e1m dal\u0161\u00ed zvonky a p\u00ed\u0161\u0165alky, kter\u00e9 prost\u011b nedostanete se serverem SMTP poskytovatele po\u0161ty, tj. zpr\u00e1vy o doru\u010den\u00ed atd.<\/li>\n
  6. SMTP s v\u00edce mo\u017enostmi port\u016f ne\u017e jen 25, 465, 587 a 2525!<\/li>\n<\/ol>\n

    M\u016f\u017eeme mluvit z prvn\u00ed ruky, proto\u017ee jsme je integrovali do n\u011bkolika na\u0161ich nov\u00fdch i star\u0161\u00edch aplikac\u00ed a jejich v\u00fdkon byl bezchybn\u00fd. Ani p\u0159i odes\u00edl\u00e1n\u00ed velmi rozs\u00e1hl\u00fdch e-mail\u016f s mnoha p\u0159\u00edlohami jsme nikdy nem\u011bli probl\u00e9m. Pokud hled\u00e1te pouze standardn\u00ed SMTP pro pou\u017eit\u00ed s vlastn\u00ed e-mailovou adresou, pak bychom v\u00e1m v\u017edy doporu\u010dili pod\u00edvat se na na\u0161e str\u00e1nky. Seznam server\u016f SMTP<\/a> prvn\u00ed. V opa\u010dn\u00e9m p\u0159\u00edpad\u011b pou\u017eijte N\u00e1stroj pro vyhled\u00e1v\u00e1n\u00ed SMTP<\/a> s va\u0161\u00ed e-mailovou adresou, abyste z\u00edskali \u00fadaje o serveru. Pokud v\u0161ak hled\u00e1te \u0159e\u0161en\u00ed, kter\u00e9 by se dalo pou\u017e\u00edt na jednom m\u00edst\u011b pro v\u0161echny va\u0161e e-mailov\u00e9 adresy, pak se mus\u00edte pod\u00edvat na tuto str\u00e1nku. SMTP server<\/a>, pou\u017e\u00edv\u00e1me ji a nikdy bychom ji nev\u00e1hali doporu\u010dit. M\u00e1te n\u011bjak\u00e9 dal\u0161\u00ed ot\u00e1zky, na kter\u00e9 byste se n\u00e1s cht\u011bli zeptat? Pou\u017eijte n\u00ed\u017ee uvedenou sekci koment\u00e1\u0159\u016f a my se v\u00e1m budeme sna\u017eit odpov\u011bd\u011bt.<\/p>","protected":false},"excerpt":{"rendered":"

    Sly\u0161\u00edme v\u00e1s, je to n\u011bco, na co se n\u00e1s st\u00e1le pt\u00e1te: \"Nev\u00edte o n\u011bjak\u00e9m bezplatn\u00e9m serveru SMTP bez ov\u011b\u0159ov\u00e1n\u00ed, kter\u00fd bych mohl pou\u017e\u00edt?\" D\u0159\u00edve jsme sami provozovali n\u011bkolik server\u016f, kter\u00e9 byly takto nakonfigurov\u00e1ny a umo\u017e\u0148ovaly otev\u0159en\u00e9 p\u0159ed\u00e1v\u00e1n\u00ed, ale nikdy nevydr\u017eely p\u0159\u00edli\u0161 dlouho. Jakmile se tento typ serveru stane v\u0161eobecn\u011b zn\u00e1m\u00fdm, za\u010dne se pou\u017e\u00edvat a zneu\u017e\u00edvat do t\u00e9 m\u00edry, \u017ee se p\u0159estane doru\u010dovat po\u0161ta, objev\u00ed se na v\u0161ech mo\u017en\u00fdch \u010dern\u00fdch listin\u00e1ch a up\u0159\u00edmn\u011b \u0159e\u010deno je jeho pou\u017e\u00edv\u00e1n\u00ed 100% zbyte\u010dn\u00e9. Usilovn\u011b jsme se sna\u017eili naj\u00edt \u0159e\u0161en\u00ed, kter\u00e9 bude vyhovovat v\u011bt\u0161in\u011b skute\u010dn\u00fdch p\u0159\u00edpad\u016f pou\u017eit\u00ed. <\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-428","post","type-post","status-publish","format-standard","hentry","category-smtp-servers"],"_links":{"self":[{"href":"https:\/\/www.smtpsoftware.com\/cs\/wp-json\/wp\/v2\/posts\/428","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.smtpsoftware.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.smtpsoftware.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.smtpsoftware.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.smtpsoftware.com\/cs\/wp-json\/wp\/v2\/comments?post=428"}],"version-history":[{"count":12,"href":"https:\/\/www.smtpsoftware.com\/cs\/wp-json\/wp\/v2\/posts\/428\/revisions"}],"predecessor-version":[{"id":442,"href":"https:\/\/www.smtpsoftware.com\/cs\/wp-json\/wp\/v2\/posts\/428\/revisions\/442"}],"wp:attachment":[{"href":"https:\/\/www.smtpsoftware.com\/cs\/wp-json\/wp\/v2\/media?parent=428"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.smtpsoftware.com\/cs\/wp-json\/wp\/v2\/categories?post=428"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.smtpsoftware.com\/cs\/wp-json\/wp\/v2\/tags?post=428"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}