When I try to send a mail to my server I got this error:
This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

    The mail server could not deliver mail to test@test.DOMAIN.dk.  The account or
domain may not exist, they may be blacklisted, or missing the proper dns
THe funny is I get this error when I try to send from a webmail (my ISP), when I try to send a mail to my zimbra mail test@test.DOMAIN.dk then I do not get any error and the mail is incomming.... is it something wrong on my server??