Sendmail X: Architecture
This chapter describes the architecture of sendmail X. It presents some possible design choices for various parts of sendmail X and explains why a particular choice has been made. Notice: several decisions haven't been made yet, there are currently a lot of open questions.
General Architecture of sendmail X
sendmail X consists of several communicating modules. A strict separation of functionality allows for a flexible, maintainable, and scalable program. It also enhances security by running only those parts with special privileges (e.g., root, which will be used as a synonym for the required privileges in this text) that really require it.
Ref URL : http://www.sendmail.org/~ca/email/sm-X/design-2005-05-05/main/node3.html
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