[SOT] Low volume antispam filter & broken URL link

[Lima Union]

Hi all!
Unfourtunately the link posted in http://www.postfix.org/addon.html
for 'crm114 Postfix howto by Eugene Borukhovich' is broken (google
didnt't help either), does anyone by chance have that document? I'm
trying to setup a low volume/resources antispam system (any other
recommendation is welcomed).
TIA. LU.