MX record | Article about MX record by The Free Dictionary
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MX record(Mail eXchange record) An entry in a DNS database that points to the mail server for that domain. In a small company, the MX record typically directs all email to the same domain. However, a company may handle email using a different domain name, or the mail might be hosted by a third party, in which case the MX record is configured to route the mail accordingly. See DNS records.
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Thus, we choose these two features of DNS information: number of NS records and number of MX records
An MX record
shift simply consists of changing the MX record
's IP address attribute to designate a different NOC's email server to receive email on behalf of the ship.
* An MX record
or mail exchange record maps a domain name to a list of mail exchange servers for that domain.
Then it asks the DNS server if there is an alternative SMTP server it can use (using something called a secondary MX record
@ucdavis.edu to warn.ucdavis.edu pool NOT to our MX record