Would be nice to stabilize this as it adds systemd compatibility. The difference with current stable is only that aspect Thanks!
+ 21 Sep 2013; Jason A. Donenfeld <zx2c4@gentoo.org> -opensmtpd-5.3.3_p1.ebuild, + opensmtpd-5.3.3_p1-r1.ebuild: + Stabilize the systemd ebuild for bug #484914.