Configuring mail sending

Hi!
I am ending the configuration of my new nagios setup - the last step is the mail notifications.

By default, it is not able to send amy mail. I use an external mail service, which, i think, will not let be used as mail relay server…
How can i configure my setup for sending mails in the most easyest way?

Thanks!

You need to have access to an email server that accept relay. Of course you can setup smtp on the nagios server but most isp does not allow that.
I saw an instruction on how to use gmail for this. You can try googling that.

SOrry, that was a really dumb question i did… i configured it days ago… thanks anyway!!!