Probably the username provided in "Domain Settings" is not a member of "Exchange View Only Administrator" / "Organization Management" Group.
If we're creating a new user in our other two domains, we can create a mailbox enabled user. We have one domain were we get the error in the Subject line. We've had several users try the following steps with the same error message.
Ad Mgmt - Create Single User - Exchange - Mailbox Enabled User. Under Mail Server, we get No Mail Servers Available.
We are using Exchange 2010.
New to ADSelfService Plus?