This may be a Windows Exchange 2000 question buy figure I would also try in Windows 2000. My Exchange 2000 Server has been working fine up till a couple of days ago. Now I can create a user in Active Directory and the user creates but does not create a mailbox. Also I have a couple of users that I had deleted out of AD and when I went into System Manager to delete their mailboxes from Exchange it times out after about 2 minutes and will not delete. I can login fine to the Domain and can create users in the Domain but nothing will create in Exchange. I am thinking something is not right within AD and Exchange and maybe DNS. I just do not know what to do without wiping something out that I shouldn't. Another tech has told me that you can uninstall DNS from the server and reinstall and let it rebuild AD but that sounds pretty scary to me. Any suggestions or tips would be greatly appreciated.