Postfix |
Mail Transfer Agent (MTA) |
Dovecot |
POP3, IMAP and Managesieve server |
Apache, 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. |
Amavisd-new |
Interface between Postfix and SpamAssassin, ClamAV. it calls SpamAssassin and ClamAV for content-based spam/virus scanning |
SpamAssassin |
Content-based spam scanner |
ClamAV |
Virus scanner |
Roundcube |
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 -- too many password failures, seeking for exploits, etc |
Awstats |
Apache and Postfix log analyzer |
iRedAPD |
A postfix policy server developed by iRedMail team |
Cluebringer |
A postfix policy server. Deprecated since iRedMail-0.9.3. |