A very usual problem that helpdesk and administrators occur is:
“Help me, i don`t receive e-mails from X”
When the IT guy checks the station he see that the junk folder is full of e-mails.

So, to disable the junk folder do:

1. Open Outlook 2010 / Go to Home tab / Junk / Junk E-mail Options:

2. In the Junk E-mail Options window, go to Options tab, and select “No Automatic Filtering…”:

ENJOY.

And if you encounter any problems feel free to comment / contact me.