SpamAssassin + DCC on CentOS/RHEL

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I decided to give a try to DCC on our CentOS 3.8 mail gateway running Postfix.

SpamAssassin 3.1.8 was already installed.

Install package : rpm -ihv http://repo.securityteam.us/repository/redhat/el3/i386/RPMS/dcc-1.3.12-1.i386.rpm

In order to work properly, DCC needs the following iptables rule : iptables -A INPUT -p udp -m udp --dport 1024:65535 --sport 6277 -j ACCEPT

Edit /etc/dcc/dcc_conf and enable dccifd : DCCIFD_ENABLE=on

Edit /etc/mail/spamassassin/local.cf : use_dcc 1 dcc_home /etc/dcc

Edit /etc/mail/spamassassin/v310.pre : loadplugin Mail::SpamAssassin::Plugin::DCC dcc_path /usr/bin/dccproc

Restart SpamAssassin : service spamassassin restart

Test and debug SpamAssassin and see if anything goes wrong with DCC : spamassassin -t -D < /usr/share/doc/spamassassin-3.1.8/sample-spam.txt

Output (snippet), see DCC check works : ``Content analysis details: (1001.4 points, 3.0 required) pts rule name description

-0.0 NO_RELAYS Informational: message was not relayed via SMTP 1000 GTUBE BODY: Generic Test for Unsolicited Bulk Email 1.4 DCC_CHECK Listed in DCC (http://rhyolite.com/anti-spam/dcc/) -0.0 NO_RECEIVED Informational: message has no Received headers`



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