Our main office in Memphis uses Outlook Express as our e-mail server. Most of the computers in our office are running Microsoft XP. We have an office upstate that uses Microsoft Outlook as the mail server and his computer is running Vista. For some unknown reason, he can not send and e-mail with an attachment to anyone in our office but he can send to any other company and they can forward on to us. His e-mails come through but there is no attachment. Can someone please help me resolve this problem?