I deleted a user mailbox on the Exchange 2007 server and purged it out of the disconnected mailboxes list. This in turn deleted the AD user account as well. I recreated the mailbox which also created the AD account. However, the user is not receiving any emails after reconfiguring her Outlook 2007. Anytime someone in the company sends her an email it comes back as undeliverable. We are running cached exchange mode which may be part of the problem. How do I go about correcting this situation?