On Wed, 2 Jul 2003, James Duncan Davidson wrote:

> By changing their id after they launch as root. setuid. Pretty common
> thing to do. See man setuid.

With qmail it's even more separated. There's a small program that
opens the port and then drops root.  The smtpd itself never has any
special access.

The qmail mail system is one of the most beautiful pieces of
software around; making another mail system without looking at qmail
carefully is silly.


 - ask

-- 
http://www.askbjoernhansen.com/ - http://develooper.com/


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