"returned mail:see transcript for details" HELP

I’m a newby with these mail issues and early this day I tried to send a mail, but then I got a “returned mail:see transcript for details” mail.

This is what the mail is about:

The original message was received at Tue, 8 Aug 2006 22:16:59 -0700
from localhost.localdomain [127.0.0.1]

----- The following addresses had permanent fatal errors -----
(reason: 550-rejected Blocked - see http://www.spamcop.net/bl.shtml?216.70.114.3)…

I followed the link but I didn’t understand a thing.
Is there anybody outhere willing to explain this mail to a beginer ?

A month ago I acquired the media temple services, so I know almost nothing.

Any tutorials will be welcomed!

Thanks in advanced.
dec27 :puzzle: