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Major open source software used in iRedMail

Attention

Check out the lightweight on-premises email archiving software developed by iRedMail team: Spider Email Archiver.

Used Components

Name Comment
Postfix Mail Transfer Agent (MTA)
Dovecot POP3, IMAP and Managesieve server
Nginx, Nginx Web server
OpenLDAP, ldapd(8) LDAP server, used for storing mail accounts (optional)
MySQL, MariaDB, PostgreSQL SQL server used to store application data. Could be used to store mail accounts too.
mlmmj Mailing list manager. Shipped in iRedMail-0.9.8 and later releases.
Amavisd-new Interface between Postfix and SpamAssassin, ClamAV.
SpamAssassin Content-based spam scanner
ClamAV Virus scanner
Roundcube webmail Webmail (PHP)
SOGo Groupware A groupware which provides calendar (CalDAV), contact (CardDAV), tasks and ActiveSync services
Fail2ban Scans log files and bans IPs that show the malicious signs
iRedAPD A simple postfix policy server developed by iRedMail team, with SRS (Sender Rewrite Scheme) support.

The Big Picture

Mail Flow of Inbound Emails

Mail Flow of Outbound Emails

See also