system environment/daemons
- courier-authlib - Courier authentication library
- courier-authlib-ldap - LDAP support for the Courier authentication library
- courier-authlib-mysql - MySQL support for the Courier authentication library
- courier-authlib-pgsql - MySQL support for the Courier authentication library
- courier-authlib-pipe - External authentication module that communicates via pipes
- courier-authlib-userdb - userdb support for the Courier authentication library
- exim - The exim mail transfer agent
- exim-clamav - Clam Antivirus scanner dæmon configuration for use with Exim
- exim-greylist - Example configuration for greylisting using Exim
- exim-mysql - MySQL lookup support for Exim
- exim-pgsql - PostgreSQL lookup support for Exim
- jabberd - OpenSource server implementation of the Jabber protocols
- pound - pound is a reverse proxy, load balancer and HTTPS front-end
- zoneminder - A camera monitoring and analysis tool