[CentOS] how to send mail from console

Hi all,

i'm trying to get a script to send me an email whenever a certain 
condition takes place..
i'm afraid i dont have experience with mail command nor anything else 
related to sending emails for that matter..

i googled a bit and tried using mutt and mail ...
though i do not recieve any email in my inbox...

the command im using is the following : mail -s “disk space report” 
R_O_L_A_N_D at hotmail.com

should i setup a default smtp to use? where can i check for the errors 
that are taking place?