[CentOS] Sending Email Via Telnet

is any email program running?
run:
   netstat -pant|grep ":25"|grep LISTEN
to see if any program is listening... output should look like:
  tcp 0 0 0.0.0.0:25 0.0.0.0:* LISTEN 21493/sendmail

guess it'll say 'postfix' or 'master' instead of 'sendmail' on RH6.