mimetypes mime magic and skin_logo

[despcorp]

Greetings Everyone,

I am new in mailservers and clients and I was wondering if anyone could help/guide me through step by step on how to fix the things below:

1) skin_logo
    Custom image to display instead of the Roundcube logo.
    Enter a URL relative to the document root of this Roundcube installation.

2) Test filetype detection
Fileinfo/mime_content_type configuration:  NOT OK

Check the Fileinfo functions of your PHP installation.
The path to the magic.mime file can be set using the mime_magic config option in Roundcube.
Mimetype to file extension mapping:  NOT OK

Please set a valid path to your webserver's mime.types file to the mime_types config option.
If you can't find such a file, download it from svn.apache.org.

[SKaero]

What exactly are your questions? Both options are well explained there.