help pls

[Kimberly Vher]

        

i set up a virtual domain then got this error

ul 20 15:00:59 tunayna qmail: 964076459.040630 delivery 50: failure:
This_message_is_looping:_it_already_has_my_Delivered-To_line._(#5.4.6)/
Jul 20 15:00:59 tunayna qmail: 964076459.041007 status: local 0/10 remote 0/20
Jul 20 15:00:59 tunayna qmail: 964076459.141130 bounce msg 942563 qp 712

what is my problem here?