Configure MX Records for Incoming SMTP E-Mail Traffic

When you want to run your own mail server, and it does not matter what version and make of mail server you're using - as long as the mail server is using SMTP as the e-mail transfer mechanism - you'll need to configure the MX Records for your domain.

MX is an acronym for Mail eXchange. MX is defined in RFC 1035. It specifies the name and relative preference of mail servers for the zone. MX is a DNS record used to define the host(s) willing to accept mail for a given domain. I.e. an MX record indicates which computer is responsible for handling the mail for a particular domain.

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