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I'm currently creating a little community for our RPi in our student community. I created a group called community and put the four new users in it. Now I tested all users and they work fine. I didn't add them to the group sudo, so they couldn't use root-commands, etc.

Well, I forgot I wasn't user pi, but executed sudo apt-get install ....

Now my computer gave me this:

Nutzer ist nicht in der sudoers-Datei. Dieser Vorfall wird gemeldet.

In English it means: 

User is not in the sudoers-file. This event will be reported.

I get why this is appearing but I don't understand WHERE it is reported to? Since I am the pi unser and the root user, I should have been messaged, but nothing happened. Where is the try to execute a command as root illegily reported to.

Please tell me where is a message and if it's not there by default, how to activate it?

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  • Have a look in /var/spool/mail and see if there is a root file there. This mechanism is one which makes more sense on larger scale systems or inet servers. I don't know if it can be changed but you might read through, e.g., man sudoers. – goldilocks♦ Oct 13 '16 at 16:10
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    It assumes that an email will be send to root, however, since nobody but @goldilocks can configure sendmail anymore it usually isn't. – Ghanima♦ Oct 13 '16 at 16:37
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    Goldilocks gave up on configuring sendmail a long time ago and sought greener pastures. I think there is a 1500 page book still in print though, check your local library. But hint: It may take you less time to write your own MTA. – goldilocks♦ Oct 13 '16 at 16:51

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