[CentOS] Centos 6 ASSP ( anti-spam-smtp-proxy)

Need an anti-spam proxy and looking at options, was wondering if anyone is
using ASSP with Centos 6 and if so does anyone have any goo How-to links
they have...I have managed to find this one -

http://www.how2centos.com/fight-spam-with-assp-anti-spam-smtp-proxy-on-centos-5-4/

Probably most still applies to 6, but maybe thinking with the newer
versions of things I could stay in the standard repos...Thanks.