I have Outlook installed on my Laptop, it has worked fine for about the first 6 months, suddenly I am receiving this error when I send a message “No transport provider was available for delivery to this recipient” I have searched the MSKB and tried everything even creating a new pst folder and setting up a new mail account, I use this laptop at home and at work and on both networks I receive the same error. Outlook will receive mail fine. I also uninstalled and reinstalled outlook with no success. Also tried 3 different mail servers, dialup connections. Any help would be greatly appreciated. Tried to create an incident with Microsoft but got Script Error when trying to log-in. Thanks Again!