When send a PDF that embeded in FireFox as an Email attachment , it became a .jsp file

Situation:
When send a PDF that embeded in FireFox or IE10 as an Email attachment , it became a .jsp file



My solution:
IE10

• Change IE10 as a "Compatibility Mode" for this website.

FireFox

• Tools -> Options -> Tab :Applications

How to show Adobe Reader Toolbar in your Browser

• Adobe Reader -> Edit -> Preferences -> Internet -> cancel "Display in Read Mode by Default"

After then, it will become "PDFfilename.jsp.pdf". Done!!

※if still show "PDFfilename.jsp", check your Office version, it probably 64bits version.