I have a Redhat linux machine..
I am using nagios and trying to send mail to my external account
But does not seem to be working..
1. i need to know how would i test if my linux machine can send mail to external accounts.
2.how do i test if nagios is sending mails to external account.
3. when mail are sent where are store before they are dispatched. in linux and in nagios
4. does nagios and linux have log file created.