[support] MIME Detection

[Luke]

I am seeing this on status pages.  Have been on several versions, but now 
on 6.16, I thought I'd ask:

    MimeDetect is using the browser supplied filename for file extension
    lookups. It is strongly recommended that you install and configure the 
PHP
    Fileinfo Extension or the UNIX 'file' command to provide more accurate
    severside mime type detection.

Now, other than not knowing that server has an "r", what's the deal with 
this?

root at atlas:~# which file
/usr/bin/file

Which path, presumably, PHP or Drupal would know or guess.

So why can't it find it?

Luke