system environment/daemons
- dovecot - Dovecot IMAP server
- dovecot-mysql - MySQL back end for dovecot
- dovecot-pgsql - Postgres SQL back end for dovecot
- dovecot-pigeonhole - Sieve and Managesieve plug-in for dovecot
- libspf-milter - Sendmail mail filter module using libspf
- mod_fastcgi - Apache2 module for high-performance server-side scripting
- mod_fcgid - FastCGI interface module for Apache 2
- pop3gwd - A pop3 proxy daemon
- ppp - The PPP (Point-to-Point Protocol) daemon
- proftpd - Flexible, stable and highly-configurable FTP server
- proftpd-ldap - Module to add LDAP support to the ProFTPD FTP server
- proftpd-mysql - Module to add MySQL support to the ProFTPD FTP server
- proftpd-postgresql - Module to add PostgreSQL support to the ProFTPD FTP server
- rbldnsd - Small, fast daemon to serve DNSBLs
- sendmail - A widely used Mail Transport Agent (MTA)
- sendmail-cf - The files needed to reconfigure Sendmail
- sendmail-milter-spf - Milter to enable SPF checking in sendmail
- sfcmilter - Sender Forgery Checker mail filter module
- smf-sav - Mail filter for sender address validation
- smf-spf - Mail filter for Sender Policy Framework verification
- spamass-milter - Milter (mail filter) for spamassassin
- spamass-milter-postfix - Postfix support for spamass-milter
- spfmilter - SPF mail filter module
- ud - Uptime Daemon