[cobalt-users] Prob reciving mail on raq 550

[Søre Straszek <gateway@xxxxxxxxxxx>]

Hi 

i am new to the raq world, and i am in the process of setting a raq 550 up.
Almost everything works just fine, except for reciving mail on the raq.

when i try to send mail to mail to the users i have created i get this
return mail:
The original message was received at Fri, 20 Feb 2004 21:22:20 +0100
from localhost.localdomain [127.0.0.1]

   ----- The following addresses had permanent fatal errors -----
<user@xxxxxx>
    (reason: 550 5.7.1 <user@xxxxxx>... Relaying denied. IP name lookup
failed [80.160.71.4])

   ----- Transcript of session follows -----
... while talking to mail.xxx.dk.:
>>> RCPT To:<user@xxxxxx>
<<< 550 5.7.1 <user@xxxxxx>... Relaying denied. IP name lookup failed
[80.160.71.4]
550 5.1.1 <user@xxxxxx>... User unknown


I have tryed to use user@xxxxxxxxxx aswell, with the same result.

Where do i start to look for the error?

Best regards

Søren