When I input To:field of Outlook, I input localpart@smtpdomain1.com but, it is resoluted to user object and its property was not input smtpdomain name(say localpart@smtpdomain2.com ). I guess Oulook has local cache and it resolute name. I use Outlook2010 by cacheless mode. I use Exch2003Org and Outlook2010.

Hi 1. How-To Disable And Clear Auto-Complete Cache In Outlook 2010 2. How to reset the nickname and the automatic completion caches in Outlook Terence Yu TechNet Community Support

Thank you.