I'm working with a small business who has had issues with two email hosts and is looking to upgrade to something more professional. The problem is that we've used shared hosting in the past (MediaTemple GridService and Hostgator)... when someone else on a shared plan abuses the service, we get blacklisted with them. It happened recently when an entire MediaTemple outgoing node got blacklisted and a bunch of our emails were bounced back. Some of them didn't bounce back for days and we didn't know that our clients were left hanging. Not good. So can anyone recommend a real solid email provider with great support? Money isn't much of an object here. We just don't want to go with another shared-type host.