This page documents the VALID_ENV configuration setting in FormMail.
Type Of Setting
VALID_ENV is a LEAVE setting, which means...
LEAVE : you can change this setting if you really need to and know what you're doing, but we recommend that you leave this setting unchanged.
Controls valid environment variables shown by "env_report".
Set VALID_ENV to the environment variables the script is allowed to report. There is generally no need to change this setting.
$VALID_ENV = array('HTTP_REFERER','REMOTE_HOST','REMOTE_ADDR', 'REMOTE_USER','HTTP_USER_AGENT');