Qué (quién) es mail transfer agent - definición
SOFTWARE THAT TRANSFERS ELECTRONIC MAIL MESSAGES FROM ONE COMPUTER TO ANOTHER USING SMTP
Mail transport agent; Mail server; Mail exchange server; Mail Transfer Agent; Mail exchanger; Mail transfer agents; E-mail gateway; Email server; Message Transfer Agent; E-mail server; Mail servers; Mail Transport Agent; E-mail service; Mail transfer agent; Mail relay; Mail Server; Mailserver; Message transfer agents
Mail Transfer Agent
Message Transfer Agent
<messaging> (MTA, Mail Transfer Agent) Any program responsible
for delivering e-mail messages. Upon receiving a message
from a Mail User Agent or another MTA, often by SMTP over
the Internet, it stores it temporarily locally and analyses
the recipients and delivers it to any local addressees and/or
forwards it to other remote MTAs (routing) for delivery to
remote recipients. In either case it may edit and/or add to
the message headers.
The most widely used MTA for Unix is sendmail, which
communicates using SMTP.
[Other OSes? ]
RFC 2821 (SMTP) expands MTA as "Mail Transfer Agent" though
this is less common. Alternatives with "Transport" are also
seen but less correct.
(2007-06-01)
mail server
1. <tool, messaging> A program that distributes files or
information in response to requests sent via {electronic
mail}. Examples on the Internet include Almanac and
netlib. Mail servers are also used on Bitnet.
In the days before Internet access was widespread and UUCP
mail links were common, mail servers could be used to provide
remote services which might now be provided via FTP or
WWW.
2. <messaging> (Or "mail hub") A computer used to store and/or
forward electronic mail.
(1995-05-05)
Wikipedia
Message transfer agent
Within the Internet email system, a message transfer agent (MTA), or mail transfer agent, or mail relay is software that transfers electronic mail messages from one computer to another using SMTP. The terms mail server, mail exchanger, and MX host are also used in some contexts.
Messages exchanged across networks are passed between mail servers, including any attached data files (such as images, multimedia or documents). These servers also often keep mailboxes for email. Access to this email by end users is typically either via webmail or an email client.
