25 lines
780 B
Text
25 lines
780 B
Text
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sendmail X is a message transfer system that has been designed with
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these main topics in minds:
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- security
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- reliability
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- efficiency
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- configurability
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- extendibility
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sendmail X consists of five main modules of which only one runs
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as root:
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- mcp: the main control program is similar to inetd(8): it starts
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all other sendmail X modules and watches over their execution.
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mcp runs as root in order to bind to port 25 and to change the
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uid of the processes it starts.
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- smtps: the SMTP server receives e-mails.
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- smtpc: the SMTP client sends e-mails.
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- smar: the address resolver provides lookups in various maps including
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DNS for mail routing.
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- qmgr: the queue manager controls the flow of e-mails through the SMTP
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servers and clients.
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WWW: http://www.sendmail.org/
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