Newbie - SMTP Relay server with postfix

[micromarketing]

I am not linux expert at all but wish to do email marketing at my own. I got 3 VPS servers where one in front end (running Interspire) and other two in back end with total of 20 IP addresses.

I want to install postfix with SMTP Relay Server where after sending 100 emails, IP address should change to avoid being black listed.

I need step by step help, I have no problem paying someone as long as I can be directed to do evenrything at my own.

My experties in Linux is that I wasn't sure what is putty for but I am willing to do it my own after trying different freelancers frauds and cheats on my servers. Hope someone help me