syslogd - manages system activity logging. The configuration file is /etc/syslog.conf .
smtpd - Simple Mail Transfer Protocol, designed for the exchange of electronic mail messages. Several daemons that support SMTP are available, including sendmail, smtpd, rsmtpd, qmail, zmail, etc.
usb - daemon for devices on Universal Serial Bus.
xfs - X font server.
xntpd - finds the server for a NIS domain and stores the information about it in a binding file.
ypbind - NIS binder. Needed if computer is part of Network Information Service domain.
