Architecture
The Postfix core consists of several dozen daemon programs that run in the background, each handling one specific aspect of email delivery. Examples are the SMTP server, the scheduler, the address rewriter, and the local delivery daemon. For damage-control purposes, most daemon programs run with fixed reduced privileges, and terminate voluntarily after processing a limited number of requests. Only a small number of Postfix daemons interact with users through two small "gate" programs for mail submission and for queue status information.
Read more about this topic: Postfix (software)
Famous quotes containing the word architecture:
“No architecture is so haughty as that which is simple.”
—John Ruskin (1819–1900)
“All architecture is great architecture after sunset; perhaps architecture is really a nocturnal art, like the art of fireworks.”
—Gilbert Keith Chesterton (1874–1936)
“And when his hours are numbered, and the world
Is all his own, retiring, as he were not,
Leaves, when the sun appears, astonished Art
To mimic in slow structures, stone by stone,
Built in an age, the mad wind’s night-work,
The frolic architecture of the snow.”
—Ralph Waldo Emerson (1803–1882)