Nhasi tichataura pamusoro chii akashandisa SMTP-zvengarava. Zviri pamusoro unoshandiswa zvikuru nomumbure dzakati, rakagadzirirwa e-mail hutachiwana Via TCP / IP network.
ukoshi
Mail-SMTP chengarava yakatanga kurondedzerwa muna 1982. Kazhinji, kudoma zita dzakati, zvaireva kuwedzera kwayo. Izvi mhinduro rakagadzirirwa kutumira ushamwari tsamba nokushandisa chiteshi chengarava riri TCP 25. Working on rokushandisa-pamwero tsamba zvikumbiro kazhinji vanoshandisa SMTP kutumira mashoko ari Server mamwe relaying.
nyaya
Port SMTP-tora kwakatangira zvavo kubva realizations maviri - SNDMSG uye Mail Box Protocol. Izvi mhinduro yakanga yakaitwa Ray Tomlinson. Michina budiriro raramba panguva kwema1970, nepo muna 1980 kwakanga kusina paIndaneti zvayo yazvino chimiro. Zvinonzi vakaratidza kuti SMTP-zvengarava kushanda zvakanaka kana kutumira nokutambira mazano pamusoro pemambure vanogara zvakabatana. Zvikurukuru zvinokosha Sendmail sarudzo. Uyu ndiwo mumwe rokutanga mashoko vakatuma vamiririri uyo akashandisa SMTP kwemichina.
tsamba kugadzira
SMTP chiteshi anoshandisa Domain mazita kutsvaka zvinyorwa mugamuchiri umambo tsamba exchanger. Tiri kutaura chikamu kukero iri kurutivi rworudyi chiratidzo @. Cherechedza kuti SSL SMTP chengarava e-mail muzvirongwa vachishandisa zvakakodzera dzakati uye encrypted chokuita. Pashure pokuvanunura shoko kuna munharaunda Server shoko iri wacho nokuda yeGmail.END_STRONG zvikumbiro achishandisa IMAP Protocol. It anovhura kuwana mashoko uye kushandisa Email. Uyewo, nokuti zvinangwa vanorondedzerwa POP dzakati inogona kushandiswa, kana proprietary gadziriro akadai Microsoft Outlook kana Lotus Notes. Ona kuti imwe SMTP zvakananga anosarudza nokupfuuridzirwa mashoko, asi kwete kugutsikana. Saka, vakapa shoko hamvuropu, uyewo ayo parameters. Zvisinei, musoro uye mutumbi shoko muitiro regai kushandisa.
Protocol Overview
Kuburikidza SMTP chiteshi chengarava yatumira uye kugamuchira shoko vari chokuita nomumwe. Saka mashoko zvakafanira akagamuchira Via yakavimbika gwara. Avanotarisira kuva TCP-kubatana. SMTP-Chikamu rine mirayiro kutumwa nemhosva, uyewo runoenzanirana Server mhinduro. Mugumisiro ndiyo amunoita parameters. SMTP-kushanda kutevedzana unotora matatu murayiro / mhinduro. MAIL FROM rinoratidza kudzokera kukero zvaidikanwa vakadzokera mashoko. RCPT TO mugashiri mazita. murayiro uyu zvinogona kushandiswa vakawanda nguva. Kamwe rimwe wacho.
Data murayiro rinoshandiswa zvakananga nokuda kwemashoko mameseji. Muchiitiko ichi tiri kutaura pamusoro zviri mashoko, pane chikamu chacho deko. chaikosha ichi rine muviri uye shoko Header, izvo dzakaparadzaniswa zvibereko mutsetse. Data - iri chokwadi boka mirayiro. Zvisinei, Server anoipindura kaviri. Chokutanga, zvakananga Data murayiro, nokudaro kuzivisa ezvinhu zvavo kuda kugamuchira mashoko. Uyezve, kufarira anoenda kumugumo date kutevedzana. Zvakakodzera kutora kana kuramba tsamba yose. Mumwe nomumwe vazhinji mhinduro yakanaka kana kunaka Server, sezvinoratidzwa bumbiro rawo. The yokupedzisira inogona pfupi kana zvachose. Kuburikidza chaiyo remitemo iri Server inoshuma kuti akamirira ipapo mamwe mashoko kubva nemhosva. Zvakazara servers kutsigira tsamba zvose kuti resubmitted ari chiitiko chikanganiso.
SMTP - ichi Delivery Protocol. Chisarudzo ichi haigoni kubatwa panguva chikumbiro tutsamba imwe kure Server. To dzosa E-mail, uye kushandisa tsamba bhokisi akasikwa mamwe protocols, akadai POP, uye IMAP. To noungwaru zvigadzirwa zvinofanira kuitwa, kana kuti kombiyuta haina tagara pasi kana ane kwekanguva Indaneti.
Zvino kune kure endarira tungamidzana rinotanga. Tiri kutaura zvinoitwa SMTP. Chinobvumira kure hondo atange processing shoko tungamidzana achishandisa Server. Saka, yokupedzisira anogona kugamuchira tsamba kwaari zvakakodzera kushandisa chijana murayiro. Special ODMR inokwanisa kuti ataure mashoko kune ndohwechokwadi user. E-tsamba kunodiwa kana nhoroondo akasikwa pachishandiswa vatambi chete Latin. Nokuti vanoshandisa vasina kuwana Chirungu keyboard, mureza RFC 6531. Nemhaka kwaari yakazokudziridzwa tsamba akadzidza kuziva vatambi "mamwe". Saka isu akataura muchidimbu pamusoro zvakaitwa SMTP-zviteshi uye zvavari kushandiswa.