Email problem :S

[greatman]

Hi

i have a fresh new server with ispCP omega. I make an email account in my domain but when I attemp to send a email to my server send me this:

This is the mail system at host zonedunet.com.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

The mail system

<santerref@zonedunet.com>: unknown user: "santerref"

Thanks
Greatman