Disable or limit email in root?

Frank Bonnet f.bonnet at esiee.fr
Fri May 27 04:07:15 UTC 2011

I don't remember for sendmail but if you
install postfix root cannot receive any

Le 27/05/2011 05:03, Jorge Biquez a écrit :
> Hello all.
> Is it possible that the root user can be limited to send email only for
> activities realetd to the server and only locally?
> or
> limit the amount of root user can send.
> I have a 7.3 small server working as secondary dns, 3 domains for http
> and email. very few traffic. Using sendmail, the default one.
> IN some way a spammer could tell root to send LOT emailes.
> I detect it , I guess when they started.I did not know how they did it,
> apparently with a program injection or similar strategy since it seems
> they do not enter the server, for what I have checked until now.
> Can be restricted the root user? ON the side of the OS or the sendmail.
> Suggestions on how to avoid this again.
> The password for root was VERY strong. I do not think they access it. I
> guess when I configured the email and server let something open so root
> was forced to do that.
> Thanks in advance
> Jorge BIquez
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