Distribution list, duplicate alias

I accidently deleted AD object for distribution list.

When I create distribution list from

"Chage group Settings" page and set "Create an e-mail distribution group for this group?" to yes, I get "The Directory Management Service reported the following error: Duplicate alias." I tried to delete distribution list from Central Administration -> Operations -> Approve/reject distribution groups, no luck either.

I tried stsadm refreshdms and got:

Error in application.

Any advice?

Thanks,

Young