We have a new email filter called Barracuda. There is a small Add-In for Microsoft Outlook that allows you to have a button for Mark as SPAM, Not SPAM.
To install this pluggin.
Step 1. Click this link: \\kraken\install\BsfOutlookAddIn-8.0.3.0_x86.msi
Step 2. Close Outlook.
Step 3. Profit.
Have a nice day!