What is MX record?
In the [[Domain Name System]], an '''MX record''' is something that a [[domain_name|domain]] uses to tell people and [[software]] the [[IP address]] of an [[email]] [[server]]. There can be more than one MX record for a domain. When there is more than one record, DNS uses a [[priority]] list that tells whatever is looking up the records to try the IP addresses in a certain [[order]].<ref>{{cite web|title=FAQ: How MX Records Work|url=https://www.google.com/support/enterprise/static/postini/docs/admin/en/activate/mx_faq.html|publisher=Google|access-date=13 February 2016|archive-date=19 March 2016|archive-url=https://web.archive.org/web/20160319073134/http://www.google.com/support/enterprise/static/postini/docs/admin/en/activate/mx_faq.html|url-status=dead}}</ref> For example, ''example.com'' might have a set of MX records that say for ''mail.example.com'' to try ''127.0.0.5'' first. If that try fails, another record will say to try ''127.0.0.6''. This [[behavior]] makes [[email]] more [[reliable]]. ==Related pages== *[[A record]] *[[AAAA record]] ==References== {{reflist}} ==Other websites== *[https://tools.ietf.org/html/rfc1035 The domain name RFC] {{tech-stub}} [[Category:Internet protocols]]