Matt Wright's FormMail scripts are extremely insecure! I recommend that if you are able to use your own scripts that you obtain the current version of NMS Formmail, at [nms-cgi.sourceforge.net ]. There are instructions about configuring and installing it on their site, and on my own webpage about FormMail security (which I cannot post here).
Wiz
Wiz
PS: you can sticky mail me for my Formmail Security page location, if you'd like.