Dear, A few years ago I build my own spamfilter from the following howto: http://www.howtoforge.com/virtual-users-domains-postfix-mailscanner-mailwatch-centos5.1 Today this howto is a bit outdated and the most URLS to installation files won't work anymore. Is it possible to rewrite this howto for CentOS 5.5 and all needed packages from this time? I hope that this is possible This spamfilter works great! Thanks!
Have you tried to install it using Centos 5.5 as your base? MailScanner and Mailwatch hasn't really changed that much, so you might be able to get it running just following the original guide. You can get the latest version of Mailwatch from http://switch.dl.sourceforge.net/sourceforge/mailwatch/. If you don't need a virtual setup and just a straight gateway, you could have a look at The SpamSnake. You can even try Baruwa on Centos. Baruwa, which is similar to Mailwatch, is much more updated and works extremely well. Take a look at it, the documents will walk you through the process.