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 |
Miscellanea | |
| 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 |