1. Mailer for Extreme Performance Demands This is a package that implements an internet Message Transfer Agent called ZMailer. It is intended for gateways or mail servers or other large site environments that have extreme demands on the abilities of the mailer. It was motivated by the problems of the Sendmail design in such situations. ZMailer is one of the mailers able to deal with huge quantities of mail and is more efficient any other mailer, qmail included, mostly due to its excellent queueing algorithms. Most users don't need this package -- for most users, sendmail or exim or smail will suffice. From Debian 3.0r0 APT