hi, apparently my ip address was blocked from MSN server, i am not able to send emails to hotmail accounts.
host mx1.hotmail.com[184.108.40.206] said: 550
SC-001 (SNT0-MC3-F2) Unfortunately, messages from 220.127.116.11 weren't
sent. Please contact your Internet service provider since part of their
network is on our block list. You can also refer your provider to
http://mail.live.com/mail/troubleshooting.aspx#errors. (in reply to MAIL