ARTICULOS CON INFORMACION Y CODIGOS DE SERVIDORES SMTP/POP3/IMAP (PAGINA 3)
PROGRAMACION Y DISEÑO PARA PROGRAMADORES Y WEBMASTERS

This memo defines a MIME content-type that may be used by a message transfer agent (MTA) or electronic mail gateway to report the result of an attempt to deliver a message to one or more recipients.

G. Vaudreuil

K. Moore

This memo defines an extension to the SMTP service whereby an SMTP client and server may interact to give the server an opportunity to decline to accept a message (perhaps temporarily) based on the client's estimate of the message size.

This memo defines a new Simple Mail Transfer Protocol reply code, 521, which one may use to indicate that an Internet host does not accept incoming mail.

This memo defines an extension to the SMTP service whereby an interrupted SMTP transaction can be restarted at a later time without having to repeat all of the commands and message content sent prior to the interruption.

This memo defines an extension to the SMTP service whereby an SMTP content body consisting of text containing octets outside of the US-ASCII octet range (hex 00-7F) may be relayed using SMTP.

This memo proposes a standard for SMTP on the virtual circuit facility provided by the X.25 standard of the CCITT.