I'm reading the man pages for makemap, and there are two types of database maps described, as per $subject.
What are the functional / operational differences between Primary & Virtual Domains? When when I choose one over the other? Can I get examples of when I'd choose a table of primary domains, and when I'd choose a table of virtual domains? Which one should I choose if I want to send *and* receive mail from domains that are not the same as my mail server's name? (e.g... my business has many websites... example.com, example.us, example.io - and I'd like to send and receive mail for each of them separately... say, to route the eMail to the sales rep for a specific territory) Thanks.