RFC 1123 - Requirements for Internet Hosts - Application and Support
Defines and discusses the requirements for Internet host software and covers the application and support protocols.
RFC 1566 - Mail Monitoring MIB
Defines a portion of the Management Information Base (MIB) for use with network management protocols, and extends the basic Network Services Monitoring MIB to allow monitoring of M…
RFC 1869 - SMTP Service Extensions (ESMTP)
Defines a framework for extending the SMTP service by defining a means whereby a server can inform a client as to the service extensions it supports.
RFC 1893 - Enhanced Mail System Status Codes
Describes the Enhanced Mail System Status Codes, a set of status codes for reporting mail system errors and delivery status notifications.
RFC 1939 - Post Office Protocol (POP) - Version 3
Describes the widely implemented Post Office Protocol (POP), which allows a client to retrieve mail that a server is holding for it.
RFC 2033 - Local Mail Transfer Protocol (LMTP)
Describes the Local Mail Transfer Protocol (LMTP), for transporting mail into a system where a mail receiver does not manage a queue.
RFC 2045 - Multipurpose Internet Mail Extensions (MIME) - Part 1
Specifies the format of Internet message bodies and the various headers used to describe the structure of MIME messages.
RFC 2046 - Multipurpose Internet Mail Extensions (MIME) - Part 2
Defines the general structure of the MIME media typing system and defines an initial set of media types.
RFC 2047 - Multipurpose Internet Mail Extensions (MIME) - Part 3
Describes extensions to RFC 822 to allow non-US-ASCII text data in Internet mail header fields.
RFC 2048 - Multipurpose Internet Mail Extensions (MIME) - Part 4
Specifies various IANA registration procedures for MIME media types, MIME external body access types, and MIME content-transfer-encodings.
RFC 2049 - Multipurpose Internet Mail Extensions (MIME) - Part 5
Describes MIME conformance criteria as well as providing some illustrative examples of MIME message formats.
RFC 2060 - Internet Message Access Protocol (IMAP) - Version 4 Rev 1
Describes the Internet Message Access Protocol (IMAP), which allows a client to access and manipulate electronic mail messages on a server, and permits manipulation of remote messa…
RFC 2821 - Simple Mail Transfer Protocol
Describes the widely implemented Simple Mail Transfer Protocol (SMTP) designed to transfer mail reliably and efficiently and relay mail across transport service environments. Obso…
RFC 821 - Simple Mail Transfer Protocol (SMTP)
Describes the widely implemented Simple Mail Transfer Protocol (SMTP) designed to transfer mail reliably and efficiently and relay mail across transport service environments.
RFC 822 - Standard for ARPA Internet Text Messages
Specifies the syntax for Internet mail text messages.
RFC 947 - Mail Routing and the Domain System
Describes how mail systems on the Internet are expected to route messages based on information from the domain system.
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