user can not see the correct file attachment in web mail which showed "winmail.dat" but works fine after downloaded to outlook. and the email is sent from microsoft outlook in "HTML" format(not RTF format). some user can see the correct file in the same PC but with different user, i will conculde that it is about the mail server user account config/option problem. any one could give me a solution figure it out. cos there is quite a lot of user in my company have to use web mail and got this winmail.dat problem