Hi Anthony!
Steve was right in giving you
Bruce's antispam document; we have many customers who utilize this and are happy with the results. If you're looking for something a bit more basic you can also look at the Knowledge Base article,
Recommended SPAM Settings.
We also have a blog post that covers SmarterMail security and some common ways to avoid blacklists. You can view that here:
5 Ways to Avoid Being Blacklisted. This goes over things like setting up abuse detection, locking down mailing lists, using throttling and more.
Hope this helps!
Andrea Free
SmarterTools Inc.
877-357-6278
www.smartertools.com