SMTP setup in FrontPage 2000 extensions
How to configure email in FrontPage 2000 extensions
Front Page 2000 Extensions SMTP Properties
Note that all email addresses, IPs and URLs are invalid, except where marked otherwise.

SMTP Mail server must be fully qualified, and contain at least one dot. Either use your ISPs mail server, for example: smtp.example.com or use 127.0.0.1 (alternative for localhost with a dot)
(Note: "Web servers mail address" and "Contact address" have been edited for this picture, and are invalid addresses.)