Secure email system based on true IPv6 address access

Network security problems still exist when IPv4 transfers to IPv6. The current Email framework neither authenticates the sender nor traces the source of the mail, so even find a spam, the method is just to reject the mail or insert the mail source into “blacklist”, and both of these methods can´t deracinate the generation of spam. For this reason, this paper designs secure email system based on true IPv6 address access. It divides the authentication to inter-domain and intra-domain authentication. Inter-domain authentication is used to authenticate the mail sender´s domain. It combines path-based authentication, encryption-based authentication and trust and prestige system-based authentication methods in order to support both mail forwarding and mail list. Authentication efficiency can be further improved by organizing authentication order properly. Intra-domain is used to affirm the sender´s IP address which is used to trace the sender. It supports user to move by combining the fixed and changing IP address. After testing, this system is both feasible and effective.