Mailjam is a mailing list manager app. With it you will be able to create mailing lists and manage them.
Mailjam requires a functional MTA (Mailjam has been successfully tested with sendmail and postfix but it should work with other MTA software).
Mailjam has been designed following a multi-component structure. There is a daemon that manage the mailing lists and members information in a storage backend and there are different kinds of clients (currently, three of them) that interact with the daemon using a XMLRPC link.
More information here: http://readthedocs.org/docs/mailjam/en/latest/overview.html
For installation instructions, please check the INSTALL file, or the documentation inside the docs/ subdirectory.
You can read the installation instructions here: http://readthedocs.org/docs/mailjam/en/latest/install.html