Look at the version number of
Outlook 2011. Notice that it is
Outlook 14.x? That is because
Outlook 2011 is the successor version of
Entourage EWS aka
Entourage 13.x. Other than names, the major difference between
Entourage EWS and
Outlook 2011 is that
Outlook 2011 added .pst archive-compatibility. It still reads
Entourage's .rge archives. The bottomline is that your claim that you don't have
Entourage is not true. You have
Entourage EWS--only under a new name.
There is simply no reason to expect that an older version of
Entourage EWS will work better than the latest version. If your Exchange server were older than Exchange 2007, then this would be the case. However, you need
Entourage 12.x for older versions of Exchange because
Entourage EWS, including
Outlook 2011, and
Mail can't handle the older Exchange protocol.
I digress. As I advised you in my previous post, compare your Exchange account settings in
Outlook 2011 with the settings for the same account on a Windows computer. Make sure that your
Outlook 2011 settings match those on a Windows computer.