Bit9

Most organizations permit use of alternative Email clients. We all have our preferences. I still love Pine under Unix, for example. Yes, a bit retro. But, where's the line between an alternative Email client and a SPAM tool? They both send email, yet a SPAM tool does it more efficiently. A good SPAM tool may even be a great commercial product with a large price tag or even with Anger Management features. Should an Enterprise IT department monitor a list of Email clients used throughout the organization and pick only the top 10 to 20 most popular ones, and disable these boutique tools used by employees that have too much free time or too much desire for a quick buck? Down side for having your Enterprise IP segments blacklisted is known. A lot of SPAM from your organization creates brand damage that goes beyond the inability to send or receive domain from a certain mail servers. Depending on where your internet or web services traffic is destined to, it may be subjected to stricter control and outright traffic denial.