Custom MX and A Records

Any time you add a domain as hosted in some account, you usually set a pair of Name Servers to point it to that specific company. On their end, three records are created automatically the moment the domain name is added - one A record and two MX records. The first one is a numeric address, or IP address, which “tells” the domain where its site is, while the other two are alphanumeric and they reveal the server that deals with the e-mails for that particular domain address. The website and the email hosting are usually regarded as one thing, when they're in fact two different services. Having separate records for them will allow you to have them with different companies if you would like. As an illustration, some new service provider could have excellent uptime for your site, but you may not want to switch your e-mail messages from your current host and by using an A record to point the domain to the former and MX records to have the emails with the second, you could get the best of both companies. These records are checked when you wish to open a site or send an email - in either case, the company whose name servers are used for the Internet domain will be contacted to retrieve the A and MX records and if you have set records different from their own, the correct web/mail server will then be contacted and you will see the needed website or your e-mail will be delivered.