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SpamAssassin by Alistair McDonald

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DCC

Although the correct term is 'The Distributed Checksum Clearinghouse', it is referred to as DCC here to enhance readability. DCC is the most effective network service, but also the most complex.

DCC is written in C. To build from source (binary packages are rare) a C compiler is required. DCC uses UDP port 6277 to communicate with servers, so this should be enabled through any firewall in use.

Installing DCC

DCC is available in RPM format for Mandrake, but for no other RPM-based distribution. Use the rpm -i command to install it. DCC is available in Gentoo Linux and Debian Linux; use emerge net-mail/dcc under Gentoo, and apt-get dcc-client in Debian. For other distributions and versions of UNIX, DCC should be installed from source.

The source ...

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