e-marketing

I have python script that sends mail with hotmail accounts, connect to hotmail, get the friendlist and send some mail to friends... it uses the SMTP server of hotmail to send... From the beginning this year that this script does not work right, some emails are going to junk, and the server puts the emails that tries to send in the the blacklist. I have to resolve that soon, if anyone here understands this issue and wants to earn some money, contact me.