Config smtp linux server

Avg Bid (USD)
Project Budget (USD)
$30 - $250

Project Description:

Have linux server to send emails.

Tasks will be:
Config smtp server for 8 ip
Config sending domain, 8 subdomains and DNS
Config http service

I need some linux expert to configure one domain with 8 subdomains with 1 ip each.
So I would like to use 8 separate smtp servers to send massive email, and would like each email goes out from different ip.
If you have a better solution I would appreciate.
Mind that this server is in internet, so http for this domain has to work and also DNS with SPF records and DomainKeys.

Use to pay 50$ for each server. Currently I have 4 and will need to have more in the future.
I understand first one can be more expensive till you find the way to do it. I can help as have others working. My problem is the linux administrator don't know hoy to config DNS.

Skills required:
DNS, Linux
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