nagios not sending mail (nagios -> postfix connection problem?)

[Morris, Patrick]

-----Original Message-----
From: Jim Nachlin [mailto:jim.nachlin at gawker.com] 
Sent: Wednesday, September 21, 2011 9:58 AM
To: nagios-users at lists.sourceforge.net
Subject: [Nagios-users] nagios not sending mail (nagios -> postfix
connection problem?)

> Hi All,

> Very common problem, I know, but I can't figure it out.

> Nagios is not sending email alerts for outages.  It had worked before,
> and then stopped.  I suspect a permissions or file ownership issue, as
> I think I fixed this problem once before by chowning most of
> /etc/nagios/ to nagios:nagios.

> I see alerts in nagios.log:

> [1316623404] SERVICE NOTIFICATION:
> james;gm72;DISK_VAR;CRITICAL;notify-by-email;CHECK_NRPE: Socket
> timeout after 10 seconds.

> I see nothing in /var/log/maillog.

All the config information you included is a great start.  However...  you
didn't include the definition of "notify-by-email," which would tell us the
command used to send mail (which is the part that isn't working, so it's
pretty important).
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