INSTALL - before installation if your apache supports mod_so, installation is very easy. you can check this by this command. % /usr/local/apache2/bin/httpd -l | grep mod_so.c if you find mod_so.c, your apache supports shared module. - mod_antispam shared module installation # /usr/local/apache2/bin/apxs -aic mod_antispam.c - mod_antispam uninstallation remove mod_antispam.so from apache directory and edit httpd.conf by hands.