That's essentially how it happens in most good package managers. You install a choice of MTA/imap/antispam, set up the domain name and unix accounts and SSL ce

That's essentially how it happens in most good package managers. You install a choice of MTA/imap/antispam, set up the domain name and unix accounts and SSL certs, and up and running at this point. Most of the modern smtp and imap servers have very sane defaults.