This is my way on installing dedicated spam assassin server to be integrated with my internal mail server. This server better be run as virtual machine due to easy deployment and not heavy resources needed (depending on how many spam process you want it to run). In this case, we will use CentOS 5.5 64bit.
1. Install required RPM
yum install -y db4 db4-devel gcc libstdc++ libstdc++-devel |
2. Update kernel, and others
yum update kernel yum update |
3. Reboot
4. Open Perl shell and install required perl modules
perl -MCPAN -e shell |
(for first time user, you might need to accept default value if prompted)
install HTML::Parser install NetAddr::IP install Net::DNS::Resolver::Programmable install Net::Ident install Net::DNS install DB_File install Digest::SHA1 install Time::HiRes install MIME::Base64 install Getopt::Long install File::Copy install Mail::SPF install Mail::SPF::Query install Mail::DKIM install IP::Country install IO::Socket::INET6 install IO::Socket::SSL install Compress::Zlib install LWP::UserAgent install HTTP::Date install Archive::Tar install IO::Zlib install Encode::Detect install URI::Escape |
5. Install Razor. Download it from http://razor.sourceforge.net/download :
cd /usr/local/src wget http://prdownloads.sourceforge.net/razor/razor-agents-2.84.tar.bz2 bunzip2 razor-agents-2.84.tar.bz2 tar -xf razor-agents-2.84.tar cd razor-agents* perl Makefile.PL make make test make install |
6. Install SpamAssassin. Download the source from http://spamassassin.apache.org/downloads.cgi:
cd /usr/local/src wget http://apache.lawyersdb.com/spamassassin/source/Mail-SpamAssassin-3.2.5.tar.gz tar -xzf Mail-SpamAssassin-3.2.5.tar.gz cd Mail-SpamAssassin-* perl Makefile.PL make make install |
7. Configure SpamAssassin, open file /etc/mail/spamassassin/local.cf via text editor and uncomment following:
rewrite_header Subject *****SPAM***** report_safe 0 required_score 7.5 use_bayes 1 bayes_auto_learn 1 |
8. Start spamd service
/usr/bin/spamd -d -u nobody -i x.x.x.x --allowed-ips=y.y.y.y/z --pidfile=/var/run/spamdx.pid --max-children=30 --min-children=20 & |
(x.x.x.x = usually external IP of this server)
(y.y.y.y = IP that other server will connect to this spamd)
(z = subnet mask)
9. Open /etc/rc.local and add above command to make the spamd run automatically after next reboot
10. Get your MTA (mail server) to connect to this SpamAssassin server at port 783
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