Date: 10/05/05 (Opera Browser)    Keywords: no keywords

Every time I try to send an email anywhere at all, I get the following error message:

lordlucan@paradise.net.nz
Recipient error [553 sorry, that domain isn't in my list of allowed rcpthosts (#5.7.1)]

What the hell does that mean, and how do I fix it?

Source: http://community.livejournal.com/opera_browser/46578.html