Build a linux (ubuntu, postfix, dovecot, DKIM milter etc) server for sending emails via SMTP relay with access via WEBMIN by enquiriesIIP

I need a server build that i can use as template to clone for future servers, that uses ubuntu server, and services like postfix, dovecot, DKIM milter, via HOST1PLUS virtual server for bulk email marketing, ideally set up so i can send emails via software from my pc using server as SMTP relay... (Budget: £20-£250 GBP, Jobs: Internet Marketing, Linux, Ubuntu)