Mail server for PC users

摘要

This paper describes the design and development of a software system for exchanging mail between a wide area network (BITNET) and individual personal computer users. Such users need network addresses in order to receive mail; this problem is considered and solved by splitting the user-id, so that a network user can send mail to a personal computer user at a simple address, 'user-id@node-id'. Adoption of domain addresses is considered as an alternative method. There is also a description of an access validity mechanism for personal computers, which was developed because of the need to use public telephone lines.