At work, our CEO is working on a plan to move away from a service provider who do our Spam filtering, etc.
Currently, all our mail gets relayed out through this service, and all incoming email gets relayed to us from this service.
Part of the reason this was setup was due to "Deliverability" - a big email service provider like the ones we use is unlikely to be Blacklisted (we had a problem before we moved to them where certain ISPs would block us for sending too many emails to their client (which are just order confirmation/dispatch emails!))
If we were to move away, our mailservers would be delivering directly. I'd like to set up some sort of monitoring system that gives us stats about how many mails we're sending out, what domains we're sending them to, bounce rates, servers that are regularly bouncing us, etc.
Does anyone know of a good solution for this?