I’m in the process of setting up Nagios 3 on CentOS and so far all has gone really well. However, I’ve now run into a problem where I just can’t get my head around email notifications.
Basically, I’m at a loss as to what the best way to set this up is. I notice that sendmail is installed by default but I can’t get to grips with using this at all.
I’ve also seen posts where people have used mailx, which I have also tried, but just can’t get anything to work (and I don’t know if mailx and sendmail are actually the same thing or not).
We just have one Nagios server that we need to send email alerts internally to the tech team, and we have an exchange server, so it’s not a complex setup. I’ve had a good look for documentation but there’s precious little in the way of idiots guides on this (that I can see).
Any help or info or some basic steps to get this working would be really appreciated.