you will need to check if your postfix is running and by using netstats you can check on which ports.
netstat -tulpn
Added that line into the file and still getting the same error .. Any more ideass ?
I checked to see if its listening to port 25 and i have this line here
EN 572/named
tcp 0 0 127.0.0.1:53 0.0.0.0:* LIST EN 572/named
tcp 0 0 0.0.0.0:25 0.0.0.0:* LIST EN 21769/master
tcp 0 0 127.0.0.1:953 0.0.0.0:* LIST EN 572/named
tcp 0 0 0.0.0.0:4190 0.0.0.0:* LIST EN 21672/dovecot