SoftLayer_Dns_Domain_ResourceRecord_SpfType is a SoftLayer_Dns_Domain_ResourceRecord object whose ''type'' property is set to 'spf' and defines a DNS SPF record on a SoftLayer hosted domain. An SPF record provides sender policy framework data for a host. For instance, if defining the SPF record 'v=spf1 mx:mail.example.org ~all' for 'host.example.org'. then the ''host'' property equals 'host' and the ''data'' property equals 'v=spf1 mx:mail.example.org ~all'.
SPF records are commonly used in email verification methods such as Sender Policy Framework.