These ebuilds come from http://dev.gentoo.org/~falco/.
If you have some problems, go to the official site first.
proxsmtp : An SMTP proxy similar to ClamSMTP but that works with any user-defined filter. ( http://memberwebs.com/stef/software/proxsmtp/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a falco
For Paludis use this rsync : rsync://gentoo.zugaina.org/falco-portage
If you have a problem : ycarus(-at-)zugaina.org