[2015-09-07] SELOR Version 1.5 stable. Available.
[2015-08-23] Selor MySQL Module 1.2 . Available.
[2015-05-09] SELOR Version 1.4 stable. Available.
[2015-03-17] Utilitie DKIM. Available.
MTA Selor is an open source mail server (SMTP), developed to run on Linux and FreeBSD systems. Written in C and Assembly, MTA Selor is small, fast, flexible and secure.
The project is distributed under GPL license, with some specific features under MIT license
- Virtual Domains
- Alias and redirection
- Runs external programs and reads the output of these programs to be used in event rules
- SSL/TLS via external module
- Custom logs
- Suport for multiple modules to access the e-mail base
- Execution of rules files with base in events: Connection, SMTP(mail from, rcpt to, data) and more...
- DoS protection
Access to user account and data is made using external modules, which makes possible to write your own module to access any of the internal databases
There are 3 external modules:
||To access the operating system users (passwd/shadow)
||To access a LDAP base
||To access a MySQL Database
· Rule system based on events
The rules files are executed in events that occurs in all moment during the process of a email.
When a host/client connects via TCP/IP, the event 'Connection' occurs and the rules file specified by 'Event.connection' in selor.conf is executed. In a rules file you can execute several actions based in conditions.
The current events are:
|Event fired when a likely DoS attack is occurring
||Event fired when the server receives a new TCP/IP connection
||Event fired when the SMTP command 'helo' or 'ehlo' is sent by remote host
||Event fired when the authentication is made
||Event fired when remote host specifies the from address
||Event fired when remote host specifies the recipient address
||Event fired when 'data' SMTP command is sent (before of content of message)
||Event fired when remote host sent entire email body
||Event fired when queue file is open
||Event fired when the server ends to process a queue file. This could be used to call external programs and analyze the status of queue file and update a database
||Event fired when the server send a MAILER-DAEMON to some sender
||When local server specifies a recipient during delivery of a email, the remote host reponds with a message (2xx, 4xx, 5xx).This event is fired after this response. It is possible to run external programs to test and control these responses
||Event fired when a remote host specifies a recipient that is not accepted by local server.
This is a diagram of SMTP protocol and its events
The list of all actions and conditions are available in Documentation section
The Selor project was written by Lucas Priori