I-MIME yenza kube lula ukuthumela izinamathiselo zefayili nge-imeyili. Nantsi indlela esebenza ngayo.
I-MIME imele i-"Multipurpose Mail Mail Extensions". Kuyavakala kokubili kunzima kwaye kunentsingiselo, kodwa i-MIME idlulisela amandla okuqala kwi-imeyile ye-intanethi ngendlela enomdla.
Imiyalezo ye-imeyile ichazwe ngu-RFC 822 (kwaye emva koko iRFC 2822) ukususela ngo-1982, kwaye baya kuqhubeka bephulaphula le miselo ixesha elide elizayo.
Akukho nto Kodwa Umbhali, Umbhalo ongezantsi
Ngelishwa, i-RFC 822 ihlupheke kwiqela elithile. Eyona nto ibonakalayo, imiyalezo ehambelana nomgangatho lowo akufanele iqule nantoni kodwa itekisi ecacileyo ye-ASCII.
Ukuze uthumele iifayile (njengemifanekiso, imibhalo yenkqubo yokubhala okanye iinkqubo), umntu kufuneka aguqule kwi-text text yokuqala aze athumele umphumo wokuguqulwa emzimbeni womyalezo we-imeyile. Ummkeli kufuneka akhiphe isicatshulwa kwisigijimi aze aguqule kwifomati yefayili kwakhona. Le yinkqubo ebunzima, kwaye ngaphambi kokuba i-MIME yonke imelwe ukuba yenziwe ngesandla.
I-MIME ilungisa le ngxaki ifakwe kwi-RFC 822, kwaye yenza kube lula ukusebenzisa abalinganiswa bamazwe ngamazwe kwimilayezo ye-imeyile. Ngomlinganiselo we-RFC 822 ukuya kwisicatshulwa esicacileyo (isiNgesi), oku kwakungenakwenzeka ngaphambili.
Ukungabikho koLwakhiwo
Ukongeza kokungagqibekanga kubalinganiswa be-ASCII, i-RFC 822 ayibonakali isakhiwo somyalezo okanye ifomathi yedatha. Ekubeni kucacile ukuba uhlala ufumana i-junk yedatha yedatha ecacileyo, oku kwakungekho mfuneko xa umgangatho wachazwa.
I-MIME, ngokuchaseneyo, ikuvumela ukuba uthumele iziqendu ezininzi zeenkcukacha ezahlukeneyo kumyalezo owodwa (zithi, umfanekiso kunye nexwebhu leLizwi), kwaye lixelela umthengi we-imeyile umenzi wefomathi ukuba yintoni ifom ekhoyo ukuze benze ukhetho olufanelekileyo olubonisa umyalezo.
Xa ufumana umfanekiso, awusayi kuphinda ufumanise ukuba unokubonwa nombukeli wesithombe. Umxhasi wakho we-imeyile ubonisa umfanekiso ngokwakhe okanye uqalise inkqubo kwikhompyutheni yakho.
Ukwakha nokwandisa iRFC 822
Ngoku usebenza njani umlingo weMIME? Ngokwenene, isebenzisa inkqubo enzima yokuthumela idatha engabonakaliyo kwiicatshulwa ezicacileyo ezichazwe ngasentla. Umgangatho wemiyalezo ye-MIME ayifaki ukubeka umgangatho obekwe kwi-RFC 822 kodwa uyayandisa. Imiyalezo ye-MIME ayikwazi ukuqukatha nayiphi na into ngaphandle kwe-ASCII itekisi.
Oku kuthetha ukuba yonke i-imeyile yedatha kufuneka idibene ngekhowudi ebhaliweyo phambi kokuba umyalezo uthunyelwe, kwaye kufuneka ichithwe kwifomethi yayo yasekuqaleni kwisiphelo sokufumana kwakhona. Abasebenzisi bokuqala be-imeyli kufuneka benze oko ngesandla. I-MIME yenza ngathi ngokunethezeka kwaye ikhululekile, ngokuqhelekileyo ngokusebenzisa inkqubo ebizwa ngokuba yi- Base64 encoding .
Ubomi njengeMIME Umyalezo we-imeyile
Xa ubhala umyalezo kwiprogram ye-imeyile enekhono le-MIME, le nkqubo inoku:
- Ukuba umyalezo ungowombhalo ocacileyo we-ASCII kuphela, uyishiya yodwa kwaye uxelela umxhasi we-imeyile ukuba angalindelanga nto ngaphandle kobhaliweyo obucacileyo .
- Ukuba umyalezo uqulethe okunye okanye okunye okunamathiselwe kunye nomzimba kunye nokufometha kwe-HTML, inxalenye nganye ibhekiswa kwaye iphathwa ngokuhlukileyo.
Okokuqala, ifomathi yedatha ichongiwe. Oku kuyimfuneko ukuxelela umthengi we-imeyile umthengi ukuba wenze ntoni kunye nedatha, kwaye uqinisekise ukudibanisa kakuhle ukuze kungabikho nto elahlekileyo ngexesha lokutshintshwa.
Emva koko idatha ibhalwe ngekhowudi ukuba ifomathi ngaphandle kwembhalo ecacileyo ye-ASCII. Kwinkqubo yokudibanisa , idatha iya guqulwa kwisicatshulwa esicacileyo esifanelekileyo kwimilayezo ye-RFC 822.
Ekugqibeleni, idatha ekhowudiweyo ifakwe kwisigijimi, kwaye umthengi we- imeyile umthengi uyaziswa ukuba zeziphi iindidi zedatha ezilindelekileyo: Ngaba zikhona izikhonkco? Zifakwe njani ngekhowudi? Yiyiphi ifom yefayile yangaphambili?
Ekupheleni kommkeli, inkqubo iya guqulwa. Okokuqala, umthengi we-imeyile ufunda ulwazi olongezelelweyo ngumthengi we-imeyili yomthumeli: Ngaba kufuneka ndikhange izikhonkco? Ndiya kuzigweba njani? Ndingayifumana njani iifayile eziphumo? Emva koko, nganye inxalenye yomyalezo icatshulwa kwaye ichongiwe ukuba kuyimfuneko. Ekugqibeleni, umthengi we-imeyile ubonisa iziphumo ezivela kumsebenzisi. Umzimba wombhalo ocacileyo uboniswa kumgca kumthengi we-imeyile kunye nesinamathiselo somfanekiso . Inkqubo iqhotyoshelwe kwisigidimi iboniswa nge icon , kwaye umsebenzisi unokugqiba ukuba yintoni na. Ungayigcina kwindawo ethile kwi disk yakhe, okanye iqalise ngqo kwiprogram ye-imeyili.