Take advantage of ACS trial Spam filtering servcie for one month. No commitment on your part, and easy setup.
Inform ACS of the domain name you want to protect, we will setup an account for you and all you need to do is change you MX Records to smtp.advancedcomputers.co.uk. Or if you would like us to help just ask.
No catch, no credit card details just an honest free trial.
E Mail email@example.com to make your request.