How do I change the from: address on the email notifications?

[Skip Montanaro]

    Demian> My exchange admin would like a real address associated with the
    Demian> notification emails that get sent from Nagios.  Currently they
    Demian> are from nagios at hostname.  Is there somewhere I can set this?
    Demian> I've looked through the config files pretty thoroughly.

Take a look at your notify-by-email and host-notify-by-email commands.  They
probably look something like

    /usr/bin/printf blah blah blah | mail -s blahblahblah

The From: field will be set based upon the user running Nagios.  This is
usually "nagios".  That's a real user as far as Unix is concerned.  Your
easiest path will probably be to create a .forward file in ~nagios which
contains one or more emails which you want to catch those mails:

    demian.m.ginther at boeing.com
    skip at pobox.com

You can likely (depending on the mailer you run on the Nagios machine) also
edit /etc/aliases or /etc/mail/aliases appropriately and then tickle your
mailer (newaliases does the trick on machines running Sendmail).

-- 
Skip Montanaro
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          http://www.mojam.com/
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