Why won't Hotmail let me send emails?

My email accont will not let me send emails to a person on hotmail.?

• It keeps telling me this. What does t mean and how do i fix it. Please give me avery detailed explanation because i am not to good with computers or anything. Remote host said: 550 SC-001 Mail rejected by Windows Live Hotmail for policy reasons. Reasons for rejection may be related to content with spam-like characteristics or IP/domain reputation problems. If you are not an email/network admin please contact your E-mail/Internet

• Answer:

  This document states that "If you are getting the "550 Relay Denied" error message, the outgoing mail server cannot verify who you are and will not allow you to send mail." Another possibility is that the mail server thinks you are spamming. An interesting reference which discusses the 550 error code, specifically as it relates to anti-spam.