Create an MX record on a domain.
Create an MX record on a SoftLayer domain. This is a shortcut method, meant to take the work out of creating a SoftLayer_Dns_Domain_ResourceRecord if you already have a domain record available. MX records are created with a default priority of 10. createMxRecord returns the newly created SoftLayer_Dns_Domain_ResourceRecord_MxType.
|host||string||The resource record's name|
|data||string||The resource record's value|
|ttl||integer||The resource record's time-to-live value.|
|mxPriority||integer||The priority this MX record has for mail delivery. Lower priority MTAs are contacted first.|