Description:

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. It supports IPv6, WHOSON, SSL and TLS protocol.