One click the Unlimited Lookup Auto SPF Record, which never fails to meet 10 DNS Lookups! An automatic SPF flattening approach that immediately mitigates SPF PermError and helps you to keep under SPF ten search limits.E-mail authentication method SPF (sender policy framework) is used to prevent the spoofing of e-mail by e-mail services. The problem is that SPF registers flexibly, since it needs up to 10 DNS searches. You probably didn't know but a single service can use several DNS searches and you can easily exceed the limit by combining services.