User: please report details to this Website's webmaster.
Webmaster: please see the server's application event log for more details.
This issue occurs if the email address specified in the webserver's mail address box is invalid, or you are using an aol.com or hotmail.com address in this field.
Use another email address other than your aol.com or hotmail.com address. You need to change this in both your Hosting Control Panel and FrontPage.
In the Hosting Control Panel:
For more information please see Microsoft's Help and Support page.