On 11/4/2014 2:36 PM, Frank Cox wrote: > I would like to set up a cron job to automatically check whether my mailserver and webserver are up, and tell me if they're not. > > This script tells me if my webserver is up: ... > How can I do the something similar with my mailserver? How about a cron job that e-mails you the output of 'service httpd status' or equivalent? You'll get a message that tells you if your web server is up or not. If you don't get a message, your mail server is down! (HHOS.) Unless you're just collecting performance or availability metrics for reports, how you intend to be notified is something to consider. It's trivial to have a web server's failing check result e-mailed to you, but you need an out-of-band notification method (an old Nokia phone attached to the serial port that emits an SMS message, for example) if your mail server is having difficulty. -- -Chris