I contacted Microsoft directly via US postal Service and received responses. After a couple of weeks I was informed it was a security issue for people sending emails without a TO or CC email adress and all the email addresses in bcc. If the email has a email address in TO, then this will work. Microsoft had this same problem with Vista and MS office 2003 and they repaired it. I was told they probably would not repair the problem since MS Office 2007 and MS Office 2010 were released and the problem does not occur with them.
I was disappointed, but I understand the reasoning.
But, then lo and belold I started getting email from people sending with no TO or BC, but sending bcc. So maybe they fixed the problem and I got it with an automatic update.
George