PMTA installation and server configuration

Hello, I am looking for someone to setup an emailing server for me with PMTA, two domains, rotating ips, dkim/spf etc.. Server has around 32 ips and ideally should be divided between 2 domains (i will provide domains). Installation needs to be supported with timely communication and maintenance. Good communication is very important as that is one of the parts we are really struggling with our current providers. If this works well and your prices are competitive, I have 5 servers to setup each month. Thanks.