i'm receiving this failure notice;

From: MAILER-DAEMON@ [mailto:MAILER-DAEMON@]
Sent: Wednesday, April 23, 2008 9:00 PM
To: xxxx@gnpower.com
Subject: failure notice

Hi. This is the qmail-send program at .
I'm afraid I wasn't able to deliver your message to the following addresses.
This is a permanent error; I've given up. Sorry it didn't work out.

<xxxx@gnpower.com>:
Connected to (IP Adress) but connection died. (#4.4.2) I'm not going to try again; this message has been in the queue too long.


any help...