Custom MTA/Optimized Postfix,Qmail or Exim, Bulk Mailer

I'm looking for someone that can integrate my interspire with a MTA to send bulk mail, and manage multiple SMTP servers. I need to be able to split one big list between many servers domains and IP's Must know how to handle bounces and get me into the inbox as well as integrate the MTA with DKIM,SPF,Domain Keys. I want interspire to control multiple servers and pick and choose the IP and domain I want to send from. It needs to have a send speed minimum of 250k per hour per server. Please don't contact me if you've never built a system like this before. The budget is very tight.