It depends when the Daz trademark was registered.

The domain was regged in 1998, and if the TM was registered after this date then it should be okay.

There are pushes by some US law makers (e.g. the silly Senator Olivia Snow) to change this so that TM holders have much more rights over domains, even if the domain existed before the TM, but for now it should be fine.

Would be worth consulting a domain lawyer if an offer is made for it though.