Looking for a neat spamfilter that is easy to manage and reasonable priced?
I suggest you take a look at http://www.mailroute.info, from what I can gather it is the same guys/technology that was behind the original “Microsoft Forefront Online Protection for Exchange” (yes long and stupid name :-)) just further developed. Pricing seem fair and as we use “Microsoft Forefront Online Protection for Exchange” at work with very great success it is worth considering.