Why don´t you update it via FreeBSD ports? The latest version is there...
Quoting Jean-Paul Natola <jnat...@familycareintl.org>:
I setup this box YEARS ago, and only updated the versions of sa exim and clamav, (this only filters my mail before it hands it off to my exchange server.But lately its been timing out a lot, and I read there's a patch to address this issueFreebsd exim clam and sa sw config 3.3
