RumorMill Setup Documentation
The Security Window allows you control over whether Rejected Messages are Logged. Messages are usually rejected for some kind of formatting error. Rejected messages are appended to a file called "Rejected Articles" when they are being logged. There is probably no reason to enable this feature unless you think the server is misbehaving.
The Site Administrator password is only required when conducting remote configuration of a RumorMill Server. If the Site Administrator password has not been set, it is not possible to administer RumorMill remotely. When a password is set in the Security window it is not automatically set as the password for the current remote server (otherwise you could never change the password). You need to enter the new password in the Server Location window after updating the password. Note that the password in the Server Location window is stored locally in the file RumorMill Setup Preferences in the Preferences folder (as is the SIVC options in the Settings window).