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   » Wiki: Mail Delivery Agent
Tag Wiki 'Mail Delivery Agent'.
A mail delivery agent or message delivery agent ( MDA) is a computer component that is responsible for the delivery of messages to a local recipient's ., Internet Mail Architecture, D. Crocker (July 2009) It is also called a local delivery agent ( LDA).Dovecot (software)

Within the Internet mail architecture, local message delivery is achieved through a process of handling messages from the message transfer agent, and storing mail into the recipient's environment (typically a ).

Many mail handling software products bundle multiple message delivery agents with the message transfer agent component, providing for site customization of the specifics of mail delivery to a user.

On systems, and are the most popular MDAs. The Local Mail Transfer Protocol (LMTP) is a protocol that is frequently implemented by network-aware MDAs.

The mail delivery agent is generally not started from the command line, but is usually invoked by mail delivery subsystems, such as a mail transport agent, or a mail retrieval agent.

List of MDA software for Unix-like platforms
  • Cyrus IMAP - A mail server suite that includes a mail delivery agent
  • dovecot - A mail server suite that includes a mail delivery agent
  • fdm (e-mail utility) - A combined mail retrieval agent and mail delivery agent - for complex mail sorting, the man page refers users to maildrop
  • - Primarily a Mail retrieval agent (MRA)
  • - simpler, more secure, modern alternative
  • mpop - Faster, more modern alternative
  • mailagent - an MDA with manual config for many parameters such as timezone; seems to have a Debian package at least.
  • or courier-maildrop (same program?) - traditional procmail replacement
  • postdrop or postfix-maildrop (same program?) - A mail delivery agent for use with the postfix mail transport agent; see also the Postfix daemons smtp, local, virtual (?).
  • sieve - a more modern replacement for procmail from the package

Obsolete MDA software for Unix-like platforms
  • bin/mail, the MDA part of - Sendmail is one of the oldest email packages
  • DBMail - MDA written in C by Eelco van Beek and Roel Rozendaal. Provides IMAP and POP3 daemons that use a MySQL or PostgreSQL mail store. Old? That URL refers to a web service today it seems.
  • dystill - A filtering database driven mail delivery agent - obsolete or old, no Debian package.
  • - obsolete since it is unmaintained; old, but still used

See also
  • Message transfer agent (MTA)
  • Mail retrieval agent (MRA)
  • Mail submission agent (MSA)
  • Mail user agent (MUA) a.k.a. email client
  • E-mail agent (infrastructure) (MxA)

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