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Old 12-19-2012, 02:27 PM   #1
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Post How does Linux mail system work?


How does the in-built mail system work in Linux? (When we log in to the system may show "you have mail")

We can send and receive mails to system users, how does that work? Which process controls it?

When we install Postfix or some other mta how will that affect?

Old 12-19-2012, 03:18 PM   #2
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This is going to depend on what distro you are using. The Ubuntu flavors will have postfix installed by default as will a lot of other distros. The Sendmail daemon is what was traditionally shipped with most Linux distros for quite some time. It basically is just flat files inside of /var/spool/mail that contain all of the emails being sent. The default sendmail config is usually located at /etc/ssmtp/. If you install another MTA you would have to configure it for your setup,almost all will have the basic functionality of sending mail to users pre-configured. In order to give you more detailed info you would have to re-post with a more detailed question, hopefully this gives you some general info.


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