I was doing massive HA Zimbra enterprise deployments in 2009. Shops were migrating from Exchange and *nix mbox accounts since 2003 because: 1. It was a megabit

I was doing massive HA Zimbra enterprise deployments in 2009. Shops were migrating from Exchange and *nix mbox accounts since 2003 because: 1. It was a megabitch to install and configure correctly and securely to work with Outlook, web, mobile, PDA, and other Microsoft products, and apply patch Tuesday updates depending on HA to work correctly to prevent downtime and data loss. (Blackberry BES was the sort-of answer to some crunchy mobile problems for a while because the idea of mobile apps hadn't fully materialized, so an E2EE solution seemed like the best path at the time.) 2. It was a continual attack surface, making the ops support or managed ops support far more costly than licensing. This was during the era of massive malware worms attacking the disastrous poor security of Microsoft products. Fool me once shame on you, ...* I don't have much empathy for doing the same thing and expecting a different result other than breaches and loss of data and service.