Outlook Errors

For some reason, my email refuses to send anything. I’m using Outlook and whenever I send an email, I get this error:

Your message did not reach some or all of the intended recipients.

Subject: RE: layout help
Sent: 8/27/2006 5:41 PM

The following recipient(s) could not be reached:

‘DarkPika Laker’ on 8/27/2006 5:41 PM
554 dark_pika@hotmail.com: Relay access denied

Can anyone help me?

Make sure you’ve got SMTP Server Authentication enabled in Outlook.

You may also need to change your SMTP port to 587 instead of 24/25