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Package opensmtpd

Free implementation of the server-side SMTP protocol as defined by RFC 5321


OpenSMTPD is a FREE implementation of the server-side SMTP protocol as defined
by RFC 5321, with some additional standard extensions. It allows ordinary
machines to exchange e-mails with other systems speaking the SMTP protocol.
Started out of dissatisfaction with other implementations, OpenSMTPD nowadays
is a fairly complete SMTP implementation. OpenSMTPD is primarily developed
by Gilles Chehade, Eric Faurot and Charles Longeau; with contributions from
various OpenBSD hackers. OpenSMTPD is part of the OpenBSD Project.
The software is freely usable and re-usable by everyone under an ISC license.

This package uses standard "alternatives" mechanism, you may call
"/usr/sbin/alternatives --set mta /usr/sbin/sendmail.opensmtpd"
if you want to switch to OpenSMTPD MTA immediately after install, and
"/usr/sbin/alternatives --set mta /usr/sbin/sendmail.sendmail" to revert
back to Sendmail as a default mail daemon.

Version: 7.5.0p0

General Commands

lockspool lock user's system mailbox
smtp.opensmtpd Simple Mail Transfer Protocol client

File Formats

aliases.opensmtpd aliases file for smtpd
forward email forwarding information file
smtpd.conf SMTP daemon configuration file
table format description for smtpd tables


smtpd-filters filtering API for the smtpd daemon

System Administration

mail.lmtp deliver mail through LMTP
mail.local store mail in a mailbox
mail.maildir store mail in a maildir
mail.mboxfile deliver mail to a file in mbox format
mail.mda deliver mail to a program
makemap.opensmtpd create database maps for smtpd
newaliases.opensmtpd rebuild mail aliases
sendmail.opensmtpd a mail enqueuer for smtpd(8)
smtpctl control the SMTP daemon
smtpd.opensmtpd Simple Mail Transfer Protocol (SMTP) daemon