Mailman doesnt seem to work on Plesk 7.5.3 with FC2. After some research time I found that there are logically incompatible configuration directivres: 1. httpd uses SUEXEC to improve security between different CGI scripts of different users. More about this feature: http://httpd.apache.org/docs/2.0/ suexec.html 2. Suexec have hard-coded variable named 'docroot' where all cgi-scripts must be placed in. 3. Apparently, PSA installed Mailman cgi-bin files outside of Suexec 'docroot', this creates this problem can be seen in error log file: ==== /home/httpd/vhosts/domain.us/statistics/logs/error_log ===== [Fri Jul 29 07:14:31 2005] [error] [client 220.127.116.11] Premature end of script headers: admin ================================================================== more detailed information can be seen here: === /var/log/httpd/suexec_log =================================== [2005-07-29 07:14:31]: uid: (10001/fawcett) gid: (10001/10001) cmd: admin [2005-07-29 07:14:31]: command not in docroot (/var/mailman/cgi-bin/admin) Do you see: PSA installs files to /var/mailman, and this does not match 'docroot' setting which _compiled in_ to suexec. Anyone have any suggestions? Thanks.