Method and system for delivering messages in a communication system

The present invention relates to the message delivery system which distributes a message to a computer system, and its method. Message ID structure and a message ID database are used for a system so that a user can confirm whether he or she is a receiving person of a new message, without contacting the message server which holds the message which should be distributed. Therefore, the burden of the resources about a user's message check is left to a different computer system, and a message server is enabled to turn the resources to reception and distribution of a message.