I have Nagios running on a local server, and I occasionally get some emails from it with the subject "*** SECURITY information for <hostname>***". The body of the message is just a few characters. I've done some searching in my Nagios logs and online, and I have no idea what these emails are or what they mean.
The latest instance was last night. I had my local network torn apart for a few hours, and when I reconnected everything, I had about 40 of these emails waiting for me.
The Nagios I'm using is from Ubuntu 9.10. I'm using only a very few HTTP, ssh, & ping monitors. Nothing complex at all.
alex@artichoke:~$ cat /etc/issue
Ubuntu 9.10 \n \l
alex@artichoke:~$ dpkg --list | grep nagios
ii nagios-images 0.4 Collection of images and icons for the nagio
ii nagios-plugins 1.4.13+git200906171200-1ubuntu3 Plugins for the nagios network monitoring an
ii nagios-plugins-basic 1.4.13+git200906171200-1ubuntu3 Plugins for the nagios network monitoring an
ii nagios-plugins-standard 1.4.13+git200906171200-1ubuntu3 Plugins for the nagios network monitoring an
ii nagios3 3.0.6-5ubuntu3 A host/service/network monitoring and manage
ii nagios3-common 3.0.6-5ubuntu3 support files for nagios3
ii nagios3-doc 3.0.6-5ubuntu3 documentation for nagios3
I'll paste in 1 example email, including all the headers. If anyone has any idea what these mean, I'd be very grateful for some input.
thanks,
alex
========================================================
Return-Path: <nagios@artichoke.dean>
X-Original-To: root
Delivered-To: alex@artichoke.dean
Received: by artichoke.dean (Postfix)
id 6FAC3212C7; Sun, 28 Nov 2010 21:29:59 -0600 (CST)
Delivered-To: root@artichoke.dean
Received: by artichoke.dean (Postfix, from userid 122)
id 654D6212C9; Sun, 28 Nov 2010 21:29:59 -0600 (CST)
To: root@artichoke.dean
From: nagios@artichoke.dean
Auto-Submitted: auto-generated
Subject: *** SECURITY information for artichoke ***
Message-Id: <20101129032959.654D6212C9@artichoke.dean>
Date: Sun, 28 Nov 2010 21:29:59 -0600 (CST)
artichoke : Nov 28 21:29:59 : nagios : ÇìP
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