I am running Exchange 2007 on a 2003 box. At one point I was asked to simply add a few email addresses to existing users, so I went into user properties > email addresses > add and put in the new email.
Everything worked fine, but then it was decided that a number of these needed to be changed to distribution groups. I went in, removed the address from the user, then created a new distribution group with the same alias. This worked on all but 1 of them.
My problem account has been removed from the user account, mails to that address bounce back as recipient not found, but when I go in to create the alias as a distribution group, I get errors that it already exists. It doesn't matter what OU I try to create it in, the wizard always gives me the error that this specific object already exists in AD.
I've tried a few commandlets both for get and remove using the alias as the identity and power shell returns that the object couldn't be found on the DC.
I've run through ADSI Edit and not been able to find any trace of this account.