1. Open Entourage, click Tools, then Junk E-mail Protection.
2. You will see the Junk E-mail Protection window appear. In this window, you can tell Entourage how you would like it to handle your junk e-mail. If you never want Entourage to send a potential spam message to junk, for example, you should select "None." If you change the setting to "High" you run the risk of valid e-mail being sent into the JunkMail folder. The default setting should be set to "Low."
Notice that the other tabs in this window, "Safe Domains" and "Blocked Senders," allow you to specify which people you trust, and which you do not.
3. When you are done making changes, click OK.