Mike Kellenberger wrote:
Preferably it should run on windows (we're just not at home on the *nix platforms), have all it's config options in a sql database, provide anti-spam and anti-virus out of the box, have a feature-rich webmail client and be tailored for a small ISP.
Do you really need a Windows-based product? Maybe an appliance-style mailserver would suit your needs better, regardless of what operating system it runs?
No, I would not want to recommend a specific solution ;)
-- Matthias