Questions answered in this book include:
How does Mail's Junk Mail filtering really work?
How does the spam filter use my Previous Recipients list?
How could a spammer's email addresses get on my Previous Recipients list?
What can I do to not get so much spam in the first place?
What's the deal with email that pretends to come from my bank?
What features should I look for in a spam-fighting utility or service?
Should I try server-based filtering?