I need 2 know how send mail.
$mail -s 'hi' email@example.com < /root/filename
i didn't receive any mails.
$mail -s 'hi' root < /root/filename
i sent mails to root.
i can send mails with the users of linux system.i have no idea about how to do that to firstname.lastname@example.org.
i got no idea about this ..