MIME Problem with msg extention

Hello,

I have a little problem with MIME detection.
I tried to upload xxx.msg file from Microsoft Outlook ,
but CI don't recognized this extension.

I add MIME to the mimes.php config file

And I tried to add in httpd.conf

But not recognized either.
Did I do something wrong?

Using:
CI          3.1.0
PHP       5.6.19
Apache  2.4.18