Just came across this and thought it useful:

Below is the list of published Exchange Knowledge Base Articles for the month of September

http://support.microsoft.com/?kbid=556026

http://support.microsoft.com/?kbid=933261

http://support.microsoft.com/?kbid=935202

http://support.microsoft.com/?kbid=940631

http://support.microsoft.com/?kbid=938657

http://support.microsoft.com/?kbid=941169

http://support.microsoft.com/?kbid=924955

http://support.microsoft.com/?kbid=941856

http://support.microsoft.com/?kbid=941385

http://support.microsoft.com/?kbid=942691