Abstract: The present invention generally relates to a system for blocking spam mail and a method of the same, and the system in accordance with the present invention, comprising: a Mail transceiver receiving the e-mail, temporarily storing the e-mail in a temporary storage for a set time after authentication mail is transmitted, and deleting the e-mail it a sender's response is not received within the set time, then transmitting the temporarily stored e-mail to mail accounts of recipients of a mail server if the sender's response is received within the set time; an authenticator list classifying and storing, according to each recipient, an e-mail address of the sender authenticated through the authentication mail and an e-mail address of a random sender registered by the recipients of the e-mail to receive the e-mail without authentication; and an authentication processor retrieving whether the e-mail address of the sender is included in the authenticator list, sending the authentication mail to the e-mail address of

Abstract: A spam SMS blocking system and a method thereof for blocking reception of SMS messages which are transmitted in large quantities for the purpose of advertisement using short messages (SMS messages) through a wireless communication network are disclosed. A spam short message blocking system for authenticating a short message transmitted from a sender terminal prior to reception by a receiver terminal includes an SMS processing server for receiving the short message from the sender terminal, requesting authentication as to whether the short message is transmitted by the sender terminal, and transmitting the short message to the receiver terminal if a response to the request is received.