I have a Windows XP Pro PC with MS Office 2003 and all service packs. Our office uses Exchange 2003 on a Windows 2003 Server. All users are sending mail fine, but 1 user who has been working fine for over 2 years all of a sudden is receiving a message everytime she sends mail:
Heading: Microsoft Office Word
Message: You do not have the permission to send the message on behalf of the specified user.
She cannot send any messages.
We reloaded MS Office 2003 on the PC, and have checked the Outlook settings to be sure there is no name in the "From" line in the message when sending. I think it's an Exchange issue but haven't been able to find anything online to help.