A connection request from a remote host is denied by an e-mail service system, if the number of connection request from the remote host exceeds a predetermined reference number, and the responsibility to re-send the denied e-mail is transferred to the requesting host. For the determination of connection...http://www.google.es/patents/US20030069933?utm_source=gb-gplus-sharePatente US20030069933 - Electronic mail service system and method that make use of dynamic IP filtering technology
Electronic mail service system and method that make use of dynamic IP ...
