i just setup the following Click here

pretty good howto. its pretty straight forward, and all of the packages are in the portage tree. (some you have to unmask in /etc/portage/package.keywords). it will get you to thru a working interface, though i still can't seem to get mailing lists to work right. and i'm not sure about spam protection and av protection yet. haven't tested it with such.

here's the pertaining list from my worldfile
net-mail/autorespond
net-mail/courier-imap
net-mail/dcc
net-mail/ezmlm-idx-mysql
net-mail/f-prot
net-mail/qmail
net-mail/qmail-scanner
net-mail/qmailadmin
net-mail/razor
net-mail/squirrelmail
net-mail/vpopmail