courier : An MTA designed specifically for maildirs ( http://www.courier-mta.org/ )
esmtp : esmtp is a user configurable relay-only Mail Transfer Agent (MTA) with a sendmail compatible syntax ( http://esmtp.sourceforge.net/ )
exim : A highly configurable, drop-in replacement for sendmail ( http://www.exim.org/ )
mini-qmail : a small null client that forwards mail via QMQP to a full qmail server ( HOMEPAGE=" )
msmtp : An SMTP client and SMTP plugin for mail user agents such as Mutt ( http://msmtp.sourceforge.net/ )
netqmail : qmail -- a secure, reliable, efficient, simple message transfer agent ( HOMEPAGE=" )
nullmailer : Simple relay-only local mail transport agent ( http://untroubled.org/nullmailer/ )
opensmtpd : Lightweight but featured SMTP daemon from OpenBSD ( http://www.opensmtpd.org/ )
postfix : A fast and secure drop-in replacement for sendmail ( http://www.postfix.org/ )
qmail-ldap : qmail -- a secure, reliable, efficient, simple message transfer agent ( HOMEPAGE=" )
qpsmtpd : qpsmtpd is a flexible smtpd daemon written in Perl ( http://smtpd.develooper.com )
sendmail : Widely-used Mail Transport Agent (MTA) ( http://www.sendmail.org/ )
ssmtp : Extremely simple MTA to get mail off the system to a Mailhub ( ftp://ftp.debian.org/debian/pool/main/s/ssmtp/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a gentoo
For Paludis use this rsync : rsync://gentoo.zugaina.org/gentoo-portage
If you have a problem : ycarus(-at-)zugaina.org