Open Control Panel by clicking Start > Control Panel and click 'Administrative Tools'.
Select 'DNS'.
Open the 'Forward Lookup Zones' folder.
To back up the current configuration, right-click the sub-folder for the mail domain you are configuring, select 'export' from the context sensitive menu and save the configuration in a safe location.
Open the zone/domain sub-folder for that mail domain.
Delete all the existing MX records in that zone/domain.
Enter a new record for primary mail server with a lowest priority number and enter its FQDN value as mx101.everycloudtech.com and click OK.
Enter a new record for secondary mail server with the next lowest priority number and enter its FQDN value as mx102.everycloudtech.com and click OK.
Enter a new record for secondary mail server with the next lowest priority number and enter its FQDN value as mx103.everycloudtech.com and click OK.
Enter a new record for secondary mail server with the next lowest priority number and enter its FQDN value as mx104.everycloudtech.com and click OK.
Right-click the zone/domain folder and select 'Properties' from the pop-up menu.
Select the 'Start of Authority (SOA)' tab, click the 'Increment' button and click OK.