The new named as shipped in Sun's latest bind patches prints message
about all kinds of configuration problems.
This particular message indicates that named has learned from a
nameserver that a particular domain is served by a particular
nameserver. When asked, however, that nameserver denies all
knowledge of the particular domain.
This is known as a "lame delegation", a reference that points nowhere.
If the lame server isn't yours, there's nothing you can do