I am using Outlook 2003 with Exchange 2003 and one of our users cannot send to a person in their address book. We have 2 address books, a organization address book and a personal address book. The user can send an email to the contact from the organization address book but cannot send it to them if they use their personal address book. When they try and send from the personal one it just sits in the outbox. I have tried to send and receive as well as resending it but to no avail. Any ideas?