Mail delivery agent

A Mail Delivery Agent (MDA) is software for the delivery of emails to the relevant user accounts .

Mail delivery agents, along with mail user agents, are the two original components of systems for e-mail. Because each mail user agent can only access a single user directory of a computer user, a mail delivery agent is assigned the delivery in multi-user systems , and the root account has extended access rights .

With the client-server model came Mail Transfer Agents and the Simple Mail Transfer Protocol added. In addition to this network protocol , mail delivery agents can use the Local Mail Transfer Protocol .

Independent implementations of mail delivery agents are also simply called mail filters :

• maildrop
• procmail
• dystill - mail filter with MySQL database connection

Some examples of software that include MDA:

• bin / mail - the MDA part of Sendmail
• fdm - a combined MRA ( Mail Retrieval Agent ) and MDA
• postfix-maildrop - the MDA of the Postfix - MTA
• smtp, local, virtual - Postfix daemons
• exim - Exim
• dovecot-lda - the MDA from Dovecot

Individual evidence

1. ↑ RFC 5598 - Internet Mail Architecture . Internet Engineering Task Force . P. 23. Retrieved July 25, 2011.