Problem opening outlook mail via black berry 9900 browser

I am using Blackberry 9900 without blackberry services. I used to open my email accounts via Wi-Fi. I am using my hotmail and gmail accounts without any problem but whenever i tried to open one of my live mail acc *** Email address is removed for privacy *** via blackberry browser, after submission of password form it displays an error message "Unable to find the requested server". I have cleared cache, tried hard reset but any action didnt work. Although i can access my this email acc on other mobile device without any problem and i can access my other hotmail account with my blackbrerry without any problem. Only i am having problem with *** Email address is removed for privacy ***. kindly suggest