We have windows 2003 sp1 and exchange 2003 sp2. I have a child domain that doesn't have an exchange server. We have an account in this domain that we need to have a mailbox created which will be created on an exchange server located on another child domain. Their is a trust from what I can see. I ran domainprep on this domain to extend the schema. I setup the administrator of this domain to have full exchange rights but it still doesn't create the mailbox eventhought I see that the account has the exchange tabs. Is there something I am missing?