If you're not happy with BIS then, yes, BES is the answer. You'll have to determine if you want the added benefits of BES for the cost (every option is a compromise).
Does your hosted BES provider also offer antispam? I'm using MailStreet and their Defender (MXlogic) antispam service is very good.
Last edited by takeshi : 04-23-2007 at 08:50 AM.