| 摘要 |
<p>A system and method of classifying users of an electronic network to prevent receipt of unsolicited bulk or commercial email. The system includes a mail server for receiving email from a user. The mail server determines if the received email is from a source previously selected by the user. If the email sender is not in a database file of acceptable sources of email, a test is performed to test the humanity of the source of the email. If the source is classified as of human origin the email is presented to the user.</p> |
