From: Jirka Prchal <prchal@JIA.PVT.CZ>
Subject: Re: X.400
Date: Mon, 5 Feb 1996 16:45:46 +0100
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Matej Cepl"@LF3.CUNI.CZ writes: ) ) Dobry den, ) ) mohl by mi nekdo, prosim, vysvetlit, co to je X.400 a jaky je ) jeho pomer k Internetu? Je to [jak se domnivam] nezavisla sit [na zpusob ) Compuserve, nebo FidoNet] nebo je to neco docela jineho? Je-li to nejaka ) sit existuje do ni Internet gateway? ) ) Dekuji ) Matej Cepl Pokud se nemylim, pak X.400 je ISO norma definujici sluzby a protokoly pro zasilani elektronicke posty. Neurcuje smerovani zprav mezi uzly ani styk uzivatele s agentem. Z definovanych protokolu napr.: pro predlozeni a odebrani zpravy, store & forward... Jsou definovany tri datove jednotky - zprava, navratka a testovaci zprava. Z typickych sluzeb: odebirani a predavani zprav, casove razitkovani, typovani tel zprav (ASCII, FAX, digitalni FAX, videotex...), identifikovani zprav jednoznacnym ID, informovani o nedoruceni zpravy... Pro identifikaci je zaveden system hierarchickych jmen. Stat, spravni domeny, privatni spravni domeny, osoba, organizace, oddeleni v organizaci... Z existujicich siti ktere pouzivaji X.400 (nebo jistou modifikaci) (a maji mailovou gateway) napr.: arcom, envoy, gold-400, keylink, mailnet... napr. adresa john.q.smith@org_unit.org.prmd.gold-400.gb odpovida /G=John/I=Q/S=Smith/OU=org_unit/O=org/PRMD=prmd ADMD=gold 400/C=GB/ (MD - spravni domena, PRMD - privatni spravni domena...) O dalsich gatewayich snad nekdo napise vice. Jirka Prchal -- PVT a.s. divize Jihlava E-mail: prchal@jia.pvt.cz Brezinova 19a Phone: +42-66-7116362 586 01 Jihlava Fax: +42-66-7116323 Czech Republic
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