Mail Protocols Definitions

  • A

    Automatic Private IP Addressing (APIPA)

    Automatic Private IP Addressing (APIPA) is a feature of Windows-based operating systems (included in Windows 98, ME, 2000, and XP) that enables a computer to automatically assign itself an IP address when there is no Dynamic Host Configuration Protocol (DHCP) server available to perform that function.

  • I

    IMAP (Internet Message Access Protocol)

    IMAP (Internet Message Access Protocol) is a standard email protocol that stores email messages on a mail server, but allows the end user to view and manipulate the messages as though they were stored locally on the end user's computing device(s).

  • M

    MAPI (Messaging Application Program Interface)

    MAPI (Messaging Application Program Interface) is a Microsoft Windows program interface that enables you to send e-mail from within a Windows application and attach the document you are working on to the e-mail note.

  • MAPI over HTTP (Messaging Application Programming Interface over HTTP)

    MAPI over HTTP is the default transport protocol to connect clients to Microsoft Exchange and Exchange Online.

  • P

    POP3 (Post Office Protocol 3)

    POP3 (Post Office Protocol 3) is the most recent version of a standard protocol for receiving e-mail.

  • S

    SMTP (Simple Mail Transfer Protocol)

    SMTP (Simple Mail Transfer Protocol) is a TCP/IP protocol used in sending and receiving e-mail.

  • X

    X.400

    X.400 is the messaging (notably e-mail) standard specified by the ITU-TS (International Telecommunications Union - Telecommunication Standard Sector).

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