stop mailman daemons if system has them crontab -u mailman -e kill entire crontab remove /var/spool/cron/crontabs/mailman clean up mail aliases move the list archives somewhere safe ($MAILMAN/archives) clean up httpd config files run through mail server install directions in reverse: http://www.gnu.org/software/mailman/mailman-install/index.html kill mailman daemon scripts, if any kill mailman directory userdel mailman groupdel mailman