{"id":4095,"date":"2020-10-30T21:22:30","date_gmt":"2020-10-30T20:22:30","guid":{"rendered":"https:\/\/webhosting.de\/?p=4095"},"modified":"2020-10-30T21:22:30","modified_gmt":"2020-10-30T20:22:30","slug":"bedre-brug-af-e-mail-konti-med-imap-set-pop3","status":"publish","type":"post","link":"https:\/\/webhosting.de\/da\/bessere-nutzung-von-e-mail-konten-mit-imap-statt-pop3\/","title":{"rendered":"Bedre udnyttelse af e-mail-konti med IMAP i stedet for POP3"},"content":{"rendered":"<p><a href=\"https:\/\/webhosting.de\/da\/imap\/\">IMAP<\/a> og POP eller <a href=\"https:\/\/webhosting.de\/da\/pop3-ein-mailprotokoll\/\">POP3<\/a> bruges til at f\u00e5 adgang til e-mail-konti, men blev oprindeligt udviklet til andre form\u00e5l. Dette resulterer i specifikke fordele ved protokollerne i visse brugsscenarier. Internet Message Access Protocol er generelt bedre egnet til de nuv\u00e6rende e-mail-applikationer. Hvilke fordele har IMAP at tilbyde i detaljer?<\/p>\n<p>Hvordan adskiller IMAP og POP3 sig fra hinanden?<br \/>\nDen st\u00f8rste forskel mellem IMAP og Post Office Protocol Version 3, som den kaldes fuldt ud, er funktionsudbuddet. Det skyldes de forskellige m\u00e5ls\u00e6tninger for udviklingen af protokollerne. POP3 er beregnet til at hente e-mails fra en mailserver, s\u00e5 du derefter kan gemme, l\u00e6se og redigere dem p\u00e5 en lokal computer. IMAP er p\u00e5 den anden side rettet mod tilf\u00e6lde, hvor du lader dine e-mails ligge permanent p\u00e5 mailserveren og kun midlertidigt henter den enkelte besked, som du \u00f8nsker at l\u00e6se eller behandle p\u00e5 det p\u00e5g\u00e6ldende tidspunkt. Du kan ogs\u00e5 bruge begge protokoller i det andet scenarie, men s\u00e5 kan du ikke udnytte deres specifikke fordele.<\/p>\n<p>Hvad er fordelene ved POP3?<br \/>\nPost Office-protokollen er med vilje holdt enkel og kan derfor gennemf\u00f8res med en lille indsats. Hvis du ikke har brug for IMAP's udvidede funktionalitet, tilbyder POP3 dig derfor et str\u00f8mlinet system til at f\u00e5 adgang til dine <a href=\"https:\/\/webhosting.de\/da\/e-mail-von-webhosting-account-trennen\/\">E-mail<\/a>. Denne brugssituation er dog ret sj\u00e6lden i dag. Typisk har du en enkelt arbejdscomputer, hvor du regelm\u00e6ssigt l\u00e6ser, redigerer og om n\u00f8dvendigt arkiverer dine e-mails og bruger et effektivt mailprogram som en s\u00e5kaldt Mail User Agent (MUA).<\/p>\n<p>Historisk betingede s\u00e6rtr\u00e6k<br \/>\nPOP3-metoden er ogs\u00e5 begrundet i det faktum, at man indtil 1990'erne normalt kun havde en lille m\u00e6ngde plads til r\u00e5dighed p\u00e5 mailserveren. Du var derfor n\u00f8dt til at t\u00f8mme din postkasse regelm\u00e6ssigt, s\u00e5 den ikke blev overfyldt. I mellemtiden er ikke blot den gennemsnitlige lagerplads p\u00e5 mailservere steget betydeligt. Der er ogs\u00e5 langt hyppigere adgang til e-mail-konti fra forskellige og desuden ofte mobile enheder. IMAP blev udviklet til s\u00e5danne scenarier, selv om de nuv\u00e6rende versioner af begge protokoller g\u00e5r tilbage til 1996.<\/p>\n<p>Hvordan p\u00e5virker forskellene<br \/>\nDen forskellige orientering af protokollerne afspejles ogs\u00e5 i de s\u00e6dvanlige standardindstillinger. Begge systemer anvender en forsinket mekanisme til sletning af e-mails. Dette fungerer p\u00e5 samme m\u00e5de som papirkurven p\u00e5 pc'ens skrivebord. Mens denne virtuelle papirkurv normalt t\u00f8mmes automatisk, n\u00e5r du logger af mailserveren ved adgang via POP3, sker sletning med Internet Message Access Protocol som standard kun efter udtrykkelig anmodning fra e-mail-klienten via expunge-kommandoen. I de fleste tilf\u00e6lde kan denne adf\u00e6rd dog konfigureres i MUA for b\u00e5de IMAP og POP3, s\u00e5 den ikke udg\u00f8r et beslutningskriterium for en af protokollerne.<\/p>\n<p>Hvilke specifikke fordele giver IMAP?<br \/>\nDa Internet Message Access Protocol som standard lader e-mail-meddelelserne ligge p\u00e5 mailserveren og kun downloader dem, n\u00e5r der er behov for det, er det s\u00e6rligt velegnet til brug af e-mail med flere slutenheder, som hver is\u00e6r er permanent forbundet til internettet eller opretter forbindelse til internettet straks, n\u00e5r der er behov for det. Dette scenario har v\u00e6ret reglen siden slutningen af 1990'erne og is\u00e6r som f\u00f8lge af den stigende udbredelse af mobile enheder efter \u00e5rtusindskiftet. Selektiv downloading af beskeder sparer datam\u00e6ngde ved mobil brug, og hvis du vil l\u00e6se dine e-mails regelm\u00e6ssigt fra forskellige enheder, kr\u00e6ver det, at beskederne forbliver p\u00e5 serveren, indtil de slettes endeligt.<\/p>\n<p>IMAP tilbyder desuden omfattende funktioner til h\u00e5ndtering af postkasser, som ogs\u00e5 kan v\u00e6re strukturerede og hierarkiske. Du kan bruge IMAP til at oprette nye postkasser p\u00e5 serveren og omd\u00f8be eller slette eksisterende postkasser, flytte meddelelser fra en postkasse til en anden, du kan s\u00f8ge i postkassernes indhold efter forskellige kriterier, og du har mulighed for at markere e-mails med s\u00e5kaldte flag. Alle disse funktioner er standardiserede i IMAP og adskiller sig kun i brugergr\u00e6nsefladen i de forskellige e-mail-klienter. For eksempel slettes meddelelser i IMAP ogs\u00e5 ved at s\u00e6tte et flag, der markerer e-mailen som slettet. F\u00f8r du har udf\u00f8rt kommandoen expunge, som permanent fjerner de meddelelser, der er markeret p\u00e5 denne m\u00e5de, er det derfor i princippet muligt med IMAP at s\u00f8ge efter slettede e-mails p\u00e5 samme m\u00e5de som efter nye, l\u00e6ste, besvarede og s\u00e5 videre. Hvorvidt og hvordan du kan bruge disse funktioner i praksis afh\u00e6nger dog af den e-mail-klient, du bruger. Disse tilbyder til tider meget forskellig adgang til de samme grundl\u00e6ggende funktioner, som Internet Message Access Protocol tilbyder.<\/p>","protected":false},"excerpt":{"rendered":"<p>IMAP und POP oder POP3 dienen dem Zugriff auf E-Mail-Konten, wurden aber urspr\u00fcnglich f\u00fcr unterschiedliche Anwendungsf\u00e4lle entwickelt. Daraus folgen spezifische Vorteile der Protokolle in bestimmten Nutzungsszenarien. Das Internet Message Access Protocol eignet sich ganz allgemein besser f\u00fcr aktuelle E-Mail-Anwendungen. Welche Vorz\u00fcge hat IMAP im Detail zu bieten? Wie unterscheiden sich IMAP und POP3? Der Hauptunterschied 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