Patent ID: 7571220

Claim:
A mail server system using a method for processing electronic mails, including sorting and blocking spam mails, comprising: a) a device for generating a plurality of passwords which are comprised of a plurality of characters and numbers; b) a first password field containing an authorized-to-reply key generated by said device for generating passwords, said authorized-to-reply key is uniquely identifiable by said mail server system and assigned specifically to a mail address of a sender; c) a second password field containing a permission-to-transmit key delivered by a remote mail server to a mail user of the said mail server system when said permission-to-transmit key is required for depositing a mail with the said remote mail server; and d) an operations command flag for entering into an anti-spam state when said command flag is turned on, and for generating automatically at least a new authorized-to-reply key to replace said authorized-to-reply key at a time interval when desired by said mail user in a security-demanding environment; wherein said authorized-to-reply key is required to designate an incoming mail from said sender as a non-spam mail when said operations command flag is enabled by said mail user; said mail server system transmits an authorization packet having a plurality of password keys which is comprised of at least the said authorized-to-reply key and the said permission-to-transmit key to said remote mail server; said mail server system accepts incoming mails having a plurality of master passwords, said master passwords are distributed to friendly senders for the permission to send mails to said mail user, each said master password is automatically replaced in all subsequent mail delivery by a new authorized-to-reply key generated by said device for generating passwords, said authorized-to-reply key is uniquely defined for each sender, and said remote mail server system optionally deletes said master password for security reasons after receiving said authorized-to-reply key from said mail server system.