1. Log into the Control Panel (Exchange 2013).
2. Click on Edit anti-spam options, located in the Spam filtering section.
3. If you wish to let your users define their own spam settings, check the box Allow users to change their spam settings.
4. You can now enable 2 anti-spam engines: engine 1 is the default engine that everyone has already been using while engine 2 is a new engine. You are able to choose either: only engine 1, only engine 2 or use both engines.
5. Click on the small blue ? button to open a pop up window that explains what the 6 filtering levels mean. You can also refer to the FAQ What the 6 spam filtering levels mean for an in depth description of what each level does.
6. Use the sliders to assign the level(s) of your choice.
7. In the Whitelist field, add an email address, a domain name or an IP address. Do the same for theBlacklist field. To apply these settings to all your users, click on Apply these settings to everyone in the organization. Attention: Clicking on this checkbox will override all existing user settings.
8. Click on Save.
Note: Items in your Whitelist override items in your Blacklist. If bob.com is in both your Whitelist and your Blacklist, emails from bob.com will be delivered.
Note: If the box Allow users to change their spam settings is not checked, administrators can still make changes to their user's Whitelist and Blacklist but the user cannot.
