19b7a44a6SPeter Wemm# $FreeBSD$ 2a19eda1fSBrian Somers 3c38876e3SJonathan M. Bresler Filtering out SPAM from your site 4c38876e3SJonathan M. Bresler 531923af7SGregory Neil ShapiroSendmail now includes excellent tools block spam. These tools are 631923af7SGregory Neil Shapiroavailable as FEATUREs that you can add to your site's .mc file. Proper use 731923af7SGregory Neil Shapiroof these FEATUREs will prevent spammer from using your site as a relay as 831923af7SGregory Neil Shapirowell as significantly decrease the amount of spam that arrives at your 931923af7SGregory Neil Shapirosite. No set of anti-spam tools will block all spam without blocking some 1031923af7SGregory Neil Shapiroportion of legitimate mail as well. Therefore, these FEATUREs are designed 1131923af7SGregory Neil Shapiroto prevent as much spam as possible without blocking legitimate mail. 1231923af7SGregory Neil Shapiro 1331923af7SGregory Neil ShapiroThese tools are discussed in /usr/share/sendmail/cf/README. Read the 1431923af7SGregory Neil Shapirosection entitled "ANTI-SPAM CONFIGURATION CONTROL". Example usage and 1531923af7SGregory Neil Shapiroadditional tools can be found in /usr/share/sendmail/cf/cf/knecht.mc. 16c38876e3SJonathan M. Bresler 17