E-mail system supporting duplex ID use and method providing e-mail service using it

摘要

The present invention relates to an e-mail how to avoid ID conflict in the e-mail or web mail systems that support large number of users possible, and users with e-mail systems and allows him to use the e-mail address he wanted.; According to the present invention, when requesting mail address issues while sending a duplicate user ID receiving and the host name is not registered in the DNS server's Internet e-mail address consisting of a "user ID @ host name, domain name," type your issued and then create a new ID by combining the user ID and the host name of the issued e-mail address, the user accounts in accordance with the new ID generated user information and mail information issued by means of management to create a database to; Having the same IP address and the IP address assigned to their domain name registration means for registering a mail server of the "host name domain name" to the DNS server; And it received an e-mail address from an external mail server, send an e-mail made in the form of "user ID @ host name, domain name," the e-mail address by e-mail with the format of "user name @ domain name host ID_" the mail system of including delivery means for delivery and converts, is provided.