Q:

OTF Font on web server? 

I wonder is it possbile to use otf fonts on web server?  I am asking this question because the following font works well on localhost but does not when I upload it on IIS. 
@font-face 
{
    font-family:"CustomArabicFont";
    src: url("fonts/NassimArabicTEST-Regular.otf");
    font-weight: normal;
    font-style: normal;
} 

This is how I am calling this font:
.custom-ar-font 
{
    font-family: CustomArabicFont, Tahoma;
    font-size: 18px;
}

A:

You'll need to configure the proper MIME types.  OTF fonts should have a MIME-type of application/font-sfnt. 
Check these links for implementation details:

http://sebduggan.com/blog/serving-web-fonts-from-iis/
http://codingstill.com/2013/01/set-mime-types-for-web-fonts-in-iis/

