Direct Sending Server Setup

We are looking for an advanced Linux programmer to help us in the development of a legitimate "snowshoe" setup. Let me explain this a little. We are an ethical email marketing firm that sends out permission-based newsletters on the behalf of numerous companies. We also have a server-based software to use our server resources (Interspire). The problem has been that our setup is causing the MySQL databases to be full due to bounce processing and server load has been high due to bounces when we tried to use the same server as we were sending from, so dealing with the bounces has been the issue. We have quite a few servers to utilize and many IP's and domains. Really, we have everything to do what we are doing except for a reliable server. So, the project is for someone to use our servers and program a consistent and reliable what to both store our 50gb of data that keeps growing without causing a MySQL failure and to send the emails without issues in server load, bounce processing, and other various issues in sending massive email campaigns. I am not the IT guy at this firm, so I am certain that my partner, who is, can guide the provider in what EXACTLY is needed and to be sure the setup is compatible with what we are already doing.