MX record is known as an e-mail exchange record which is a record type of resources in the system of domain names. A server that is responsible for accepting e-mails in the name of the domain of a receiver and explains a preference value for priority mail delivery or multiple copies of mail servers available. The set of MX records or a specific domain name e-mail must be sent with the SMTP (Simple Mail Transfer Protocol). An MX record comprises a FQDN and a priority. The priority is simply a number which is used to choose which mail server to use if multiple MX records exist for a domain name. A mail server trying to send an email to you will always try the lowest number priority first.
Now lets see how to modify MX records for Google Apps Email / Gmail, It is simple Once you sign up your domain for Google Apps, you will have to change the MX records for your domain in order to use it in Gmail specified. But if you are using cPanel then this can be done by using the MX Entry option available in cPanel. There find the domain you will be pointing to Google Apps Mail and delete all of its MX records.
You can add the following MX records with the corresponding priority for your domain:
Priority: 1 to: ASPMX.L.GOOGLE.COM
Priority: 2 to: ALT1.ASPMX.L.GOOGLE.COM
Priority: 3 to: ALT2.ASPMX.L.GOOGLE.COM
Priority: 4 to: ASPMX2.GOOGLEMAIL.COM
Priority: 5 to: ASPMX3.GOOGLEMAIL.COM
Priority: 6 to: ASPMX4.GOOGLEMAIL.COM
Priority: 7 to: ASPMX5.GOOGLEMAIL.COM
These instructions are in full compliance with the official Google Apps and been adapted to work with cPanel hosting. This will take time near about 24 hours to propagate and take effect and after that your mail will be handled exclusively by Google Apps Mail. Gmail has proven to provide the best mail experience even to the most demanding users and Bodhost hosting services provides easy means to change the MX records to Gmail.